My latest design for a British 8in-gun cruiser laid down in 1918

My opinion is that a satisfactory 8in cruiser design could not be restricted to 10,000 tons, standard. The design I propose hear is much larger, and is pretty well protected, as well as having an 8in gun armament and a 4in armour basis. The maximum speed is 32 knots with a 6,500nm range at 15 knots. I suspect that the ship should have lighter machinery (instead of 27.7 SHP/ton), and that this would cure the complaints about belt length. Contemporary Japanese ships had much lighter machinery. This is the Springsharp report:

GB/CA/1918, Great Britain Heavy Cruiser laid down 1918

Displacement:
 12,720 t light; 13,243 t standard; 14,500 t normal; 15,506 t full load

Dimensions: Length overall / water x beam x draught
 616.96 ft / 615.00 ft x 63.00 ft x 23.00 ft (normal load)
 188.05 m / 187.45 m x 19.20 m  x 7.01 m

Armament:
      8 - 8.00" / 203 mm guns (4x2 guns), 256.00lbs / 116.12kg shells, 1918 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      8 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1918 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships
      4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1918 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread
      24 - 1.57" / 40.0 mm guns (6x4 guns), 2.00lbs / 0.91kg shells, 1918 Model
   Breech loading guns in deck mounts 
   on side, evenly spread
 Weight of broadside 2,639 lbs / 1,197 kg
 Shells per gun, main battery: 150
 12 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 570.00 ft / 173.74 m 14.00 ft / 4.27 m
 Ends: Unarmoured
   Main Belt covers 143 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 570.00 ft / 173.74 m 22.00 ft / 6.71 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 108,215 shp / 80,728 Kw = 32.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 2,263 tons

Complement:
 659 - 858

Cost:
 £2.538 million / $10.150 million

Distribution of weights at normal displacement:
 Armament: 330 tons, 2.3 %
 Armour: 3,299 tons, 22.7 %
    - Belts: 1,263 tons, 8.7 %
    - Torpedo bulkhead: 464 tons, 3.2 %
    - Armament: 502 tons, 3.5 %
    - Armour Deck: 1,019 tons, 7.0 %
    - Conning Tower: 51 tons, 0.4 %
 Machinery: 3,904 tons, 26.9 %
 Hull, fittings & equipment: 5,188 tons, 35.8 %
 Fuel, ammunition & stores: 1,780 tons, 12.3 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   15,585 lbs / 7,069 Kg = 60.9 x 8.0 " / 203 mm shells or 2.0 torpedoes
 Stability (Unstable if below 1.00): 1.19
 Metacentric height 3.5 ft / 1.1 m
 Roll period: 14.2 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.57
 Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.569
 Length to Beam Ratio: 9.76 : 1
 'Natural speed' for length: 24.80 kts
 Power going to wave formation at top speed: 58 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  28.00 ft / 8.53 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
    - Quarterdeck (15 %): 16.00 ft / 4.88 m
    - Stern:  16.00 ft / 4.88 m
    - Average freeboard: 21.68 ft / 6.61 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 154.2 %
  - Above water (accommodation/working, high = better): 136.4 %
 Waterplane Area: 27,539 Square feet or 2,558 Square metres
 Displacement factor (Displacement / loading): 105 %
 Structure weight / hull surface area: 115 lbs/sq ft or 561 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.36
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

My quick and dirty GB/CA/1916 design

The main problem with my GB/CA/1916 design has to do with the armament layout. Can 9-8in guns fit on the centerline, even with superfiring guns? Also, Springsharp is behaving strangely with respect to the belt length. I was not able to satisfy the magazine and machinery coverage, despite a long belt and having increased the height to 14ft. The speed is now 30 knots with a range of 6,200nm at 15 knots. I have retained the 4.7in gun secondary armament, and increased the torpedo armament to 8 tubes. The design should be superior to the Raleighs and the Kakos, except for the latter's high speed. This is the Springsharp report:

GB/CA/1916, Great Britain Cruiser laid down 1916

Displacement:
 10,369 t light; 10,854 t standard; 12,000 t normal; 12,917 t full load

Dimensions: Length overall / water x beam x draught
 596.42 ft / 595.00 ft x 60.00 ft x 22.00 ft (normal load)
 181.79 m / 181.36 m x 18.29 m  x 6.71 m

Armament:
      9 - 8.00" / 203 mm guns in single mounts, 256.00lbs / 116.12kg shells, 1916 Model
   Breech loading guns in deck mounts with hoists
   on centreline ends, majority forward, 3 raised mounts - superfiring
      8 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1916 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships
      2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1916 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread
      16 - 1.57" / 40.0 mm guns (4x4 guns), 2.00lbs / 0.91kg shells, 1916 Model
   Breech loading guns in deck mounts 
   on side, evenly spread
 Weight of broadside 2,815 lbs / 1,277 kg
 Shells per gun, main battery: 150
 8 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 550.00 ft / 167.64 m 14.00 ft / 4.27 m
 Ends: Unarmoured
   Main Belt covers 142 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 550.00 ft / 167.64 m 20.00 ft / 6.10 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 73,876 shp / 55,111 Kw = 30.00 kts
 Range 6,200nm at 15.00 kts
 Bunker at max displacement = 2,064 tons

Complement:
 573 - 745

Cost:
 £1.708 million / $6.832 million

Distribution of weights at normal displacement:
 Armament: 352 tons, 2.9 %
 Armour: 2,863 tons, 23.9 %
    - Belts: 1,216 tons, 10.1 %
    - Torpedo bulkhead: 407 tons, 3.4 %
    - Armament: 286 tons, 2.4 %
    - Armour Deck: 909 tons, 7.6 %
    - Conning Tower: 45 tons, 0.4 %
 Machinery: 2,752 tons, 22.9 %
 Hull, fittings & equipment: 4,401 tons, 36.7 %
 Fuel, ammunition & stores: 1,631 tons, 13.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   14,896 lbs / 6,757 Kg = 58.2 x 8.0 " / 203 mm shells or 2.1 torpedoes
 Stability (Unstable if below 1.00): 1.19
 Metacentric height 3.2 ft / 1.0 m
 Roll period: 14.0 seconds
 Steadiness - As gun platform (Average = 50 %): 62 %
   - Recoil effect (Restricted arc if above 1.00): 0.73
 Seaboat quality  (Average = 1.00): 1.25

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.535
 Length to Beam Ratio: 9.92 : 1
 'Natural speed' for length: 24.39 kts
 Power going to wave formation at top speed: 54 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  27.00 ft / 8.23 m
    - Forecastle (20 %): 23.00 ft / 7.01 m
    - Mid (67 %):  23.00 ft / 7.01 m (15.00 ft / 4.57 m aft of break)
    - Quarterdeck (15 %): 15.00 ft / 4.57 m
    - Stern:  15.00 ft / 4.57 m
    - Average freeboard: 20.68 ft / 6.30 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 146.2 %
  - Above water (accommodation/working, high = better): 143.5 %
 Waterplane Area: 24,562 Square feet or 2,282 Square metres
 Displacement factor (Displacement / loading): 107 %
 Structure weight / hull surface area: 108 lbs/sq ft or 527 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.41
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily

Another attempt at an 8in gun cruiser from 1914

I wanted to try again to design a series of 8in gun British cruisers, starting in 1914. I would have liked a higher speed, but 28.5 knots was what was readily achievable. The armour basis is 4in with a 2in deck. This is the Springsharp report:

GB/CA/1914, Great Britain Cruiser laid down 1914

Displacement:
 8,359 t light; 8,747 t standard; 9,700 t normal; 10,462 t full load

Dimensions: Length overall / water x beam x draught
 546.36 ft / 545.00 ft x 56.00 ft x 20.00 ft (normal load)
 166.53 m / 166.12 m x 17.07 m  x 6.10 m

Armament:
      7 - 8.00" / 203 mm guns in single mounts, 256.00lbs / 116.12kg shells, 1914 Model
   Breech loading guns in deck mounts with hoists
   on centreline ends, majority forward, 3 raised mounts - superfiring
      8 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1914 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1914 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread
 Weight of broadside 2,234 lbs / 1,013 kg
 Shells per gun, main battery: 150
 4 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 520.00 ft / 158.50 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 147 % of normal length

   - Torpedo Bulkhead:
  1.00" / 25 mm 520.00 ft / 158.50 m 18.00 ft / 5.49 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 55,251 shp / 41,217 Kw = 28.50 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 1,715 tons

Complement:
 488 - 635

Cost:
 £1.050 million / $4.201 million

Distribution of weights at normal displacement:
 Armament: 279 tons, 2.9 %
 Armour: 2,394 tons, 24.7 %
    - Belts: 980 tons, 10.1 %
    - Torpedo bulkhead: 346 tons, 3.6 %
    - Armament: 236 tons, 2.4 %
    - Armour Deck: 793 tons, 8.2 %
    - Conning Tower: 39 tons, 0.4 %
 Machinery: 2,128 tons, 21.9 %
 Hull, fittings & equipment: 3,557 tons, 36.7 %
 Fuel, ammunition & stores: 1,341 tons, 13.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   12,616 lbs / 5,723 Kg = 49.3 x 8.0 " / 203 mm shells or 1.9 torpedoes
 Stability (Unstable if below 1.00): 1.18
 Metacentric height 2.9 ft / 0.9 m
 Roll period: 13.9 seconds
 Steadiness - As gun platform (Average = 50 %): 64 %
   - Recoil effect (Restricted arc if above 1.00): 0.76
 Seaboat quality  (Average = 1.00): 1.28

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.556
 Length to Beam Ratio: 9.73 : 1
 'Natural speed' for length: 23.35 kts
 Power going to wave formation at top speed: 54 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  26.00 ft / 7.92 m
    - Forecastle (20 %): 22.00 ft / 6.71 m
    - Mid (67 %):  22.00 ft / 6.71 m (14.00 ft / 4.27 m aft of break)
    - Quarterdeck (15 %): 14.00 ft / 4.27 m
    - Stern:  14.00 ft / 4.27 m
    - Average freeboard: 19.68 ft / 6.00 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 146.0 %
  - Above water (accommodation/working, high = better): 150.5 %
 Waterplane Area: 21,424 Square feet or 1,990 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 100 lbs/sq ft or 489 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.47
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily

The GB/CL/1937 converted to an 8in-gun cruiser: GB/CA/1937

I thought that converting the GB/CL/1937 to have 8-in guns would be interesting, sort of along the lines of the Mogami class. The speed is reduced to 35 knots, which is sufficient, anyway. The new armament is 8-8in BLR, 12-4in AA, 32-2pdr AA, and 16-21in TT. The armour basis is still 4in with a 2in deck. I did decide that a heavy cruiser needed a torpedo bulkhead, and that was a factor in reducing the speed. This is the revised Springsharp report:

GB/CA/1937, Great Britain Heavy Cruiser laid down 1937

Displacement:
 13,882 t light; 14,342 t standard; 15,700 t normal; 16,786 t full load

Dimensions: Length overall / water x beam x draught
 668.96 ft / 665.00 ft x 64.00 ft x 25.00 ft (normal load)
 203.90 m / 202.69 m x 19.51 m  x 7.62 m

Armament:
      8 - 8.00" / 203 mm guns (4x2 guns), 256.00lbs / 116.12kg shells, 1937 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 4.00" / 102 mm guns (6x2 guns), 32.00lbs / 14.51kg shells, 1937 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
      32 - 1.57" / 40.0 mm guns (8x4 guns), 2.00lbs / 0.91kg shells, 1937 Model
   Breech loading guns in deck mounts 
   on side, evenly spread, 4 raised mounts
 Weight of broadside 2,496 lbs / 1,132 kg
 Shells per gun, main battery: 100
 16 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 560.00 ft / 170.69 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 130 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 560.00 ft / 170.69 m 24.00 ft / 7.32 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm
 2nd: 1.00" / 25 mm 1.00" / 25 mm  1.00" / 25 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 153,169 shp / 114,264 Kw = 35.00 kts
 Range 8,500nm at 15.00 kts
 Bunker at max displacement = 2,444 tons

Complement:
 700 - 911

Cost:
 £7.321 million / $29.283 million

Distribution of weights at normal displacement:
 Armament: 312 tons, 2.0 %
 Armour: 3,220 tons, 20.5 %
    - Belts: 1,075 tons, 6.8 %
    - Torpedo bulkhead: 497 tons, 3.2 %
    - Armament: 529 tons, 3.4 %
    - Armour Deck: 1,065 tons, 6.8 %
    - Conning Tower: 54 tons, 0.3 %
 Machinery: 4,245 tons, 27.0 %
 Hull, fittings & equipment: 6,105 tons, 38.9 %
 Fuel, ammunition & stores: 1,818 tons, 11.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   17,756 lbs / 8,054 Kg = 69.4 x 8.0 " / 203 mm shells or 2.2 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 3.2 ft / 1.0 m
 Roll period: 15.0 seconds
 Steadiness - As gun platform (Average = 50 %): 59 %
   - Recoil effect (Restricted arc if above 1.00): 0.63
 Seaboat quality  (Average = 1.00): 1.18

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.516
 Length to Beam Ratio: 10.39 : 1
 'Natural speed' for length: 25.79 kts
 Power going to wave formation at top speed: 58 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  28.00 ft / 8.53 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (50 %):  24.00 ft / 7.32 m
    - Quarterdeck (15 %): 24.00 ft / 7.32 m
    - Stern:  24.00 ft / 7.32 m
    - Average freeboard: 24.32 ft / 7.41 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 149.7 %
  - Above water (accommodation/working, high = better): 139.3 %
 Waterplane Area: 28,788 Square feet or 2,674 Square metres
 Displacement factor (Displacement / loading): 111 %
 Structure weight / hull surface area: 118 lbs/sq ft or 576 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.71
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

A really extreme ship: the GB/CL/1937 design

I would call the GB/CL/1937 design extreme due to the ship's size and the high speed. I would never expect that British to build such a fast ship, although it would be very capable. The armour basis is still 4in and the deck is 2in. There is no torpedo bulkhead armour. The speed is 37 knots with a range of 8,500nm at 15 knots. The armament is 12-6in QF, 12-4in AA, 32-2pdr AA guns, and 16-21in TT. This is the Springsharp report:

GB/CL/1937, Great Britain Light Cruiser laid down 1937

Displacement:
 14,150 t light; 14,627 t standard; 16,000 t normal; 17,098 t full load

Dimensions: Length overall / water x beam x draught
 668.96 ft / 665.00 ft x 64.00 ft x 25.00 ft (normal load)
 203.90 m / 202.69 m x 19.51 m  x 7.62 m

Armament:
      12 - 6.00" / 152 mm guns (4x3 guns), 108.00lbs / 48.99kg shells, 1937 Model
   Quick firing guns in turrets (on barbettes)
   on centreline ends, evenly spread, 1 raised mount - superfiring
      12 - 4.00" / 102 mm guns (6x2 guns), 32.00lbs / 14.51kg shells, 1937 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships, 4 raised mounts - superfiring
      32 - 1.57" / 40.0 mm guns (8x4 guns), 2.00lbs / 0.91kg shells, 1937 Model
   Anti-aircraft guns in deck mounts 
   on side ends, evenly spread, 4 raised mounts - superfiring
 Weight of broadside 1,744 lbs / 791 kg
 Shells per gun, main battery: 150
 16 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 560.00 ft / 170.69 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 130 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 195,898 shp / 146,140 Kw = 37.00 kts
 Range 8,500nm at 15.00 kts
 Bunker at max displacement = 2,471 tons

Complement:
 710 - 924

Cost:
 £7.846 million / $31.382 million

Distribution of weights at normal displacement:
 Armament: 218 tons, 1.4 %
 Armour: 2,624 tons, 16.4 %
    - Belts: 1,076 tons, 6.7 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 419 tons, 2.6 %
    - Armour Deck: 1,075 tons, 6.7 %
    - Conning Tower: 55 tons, 0.3 %
 Machinery: 5,430 tons, 33.9 %
 Hull, fittings & equipment: 5,879 tons, 36.7 %
 Fuel, ammunition & stores: 1,850 tons, 11.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   13,562 lbs / 6,152 Kg = 125.6 x 6.0 " / 152 mm shells or 1.4 torpedoes
 Stability (Unstable if below 1.00): 1.21
 Metacentric height 3.6 ft / 1.1 m
 Roll period: 14.1 seconds
 Steadiness - As gun platform (Average = 50 %): 53 %
   - Recoil effect (Restricted arc if above 1.00): 0.36
 Seaboat quality  (Average = 1.00): 1.07

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.526
 Length to Beam Ratio: 10.39 : 1
 'Natural speed' for length: 25.79 kts
 Power going to wave formation at top speed: 62 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  28.00 ft / 8.53 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m
    - Quarterdeck (15 %): 24.00 ft / 7.32 m
    - Stern:  24.00 ft / 7.32 m
    - Average freeboard: 24.32 ft / 7.41 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 120.7 %
  - Above water (accommodation/working, high = better): 138.6 %
 Waterplane Area: 29,052 Square feet or 2,699 Square metres
 Displacement factor (Displacement / loading): 105 %
 Structure weight / hull surface area: 113 lbs/sq ft or 551 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.77
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

The GB/CL/1935 light cruiser design

The GB/CL/1935 design is almost a Mogami-type ship, except that this design has a larger displacement and a deeper draft. The draft is abnormal, as this is a convenient way, in Springsharp, to increase strength. I am sorry to say that I will resort to such measures. The main difference with this design is the 36-knot speed and the 8,500nm range at 15 knots. The armour basis is still 4in with a 2in deck. The armament stayed the same with 12-6in QF, 8-4in AA, 28-2pdr AA, and 16-21in TT. This is the Springsharp report:

GB/CL/1935, Great Britain Light Cruiser laid down 1935

Displacement:
 12,475 t light; 12,901 t standard; 14,200 t normal; 15,239 t full load

Dimensions: Length overall / water x beam x draught
 646.42 ft / 645.00 ft x 62.00 ft x 25.00 ft (normal load)
 197.03 m / 196.60 m x 18.90 m  x 7.62 m

Armament:
      12 - 6.00" / 152 mm guns (4x3 guns), 108.00lbs / 48.99kg shells, 1935 Model
   Quick firing guns in turrets (on barbettes)
   on centreline ends, evenly spread, 1 raised mount - superfiring
      8 - 4.00" / 102 mm guns (4x2 guns), 32.00lbs / 14.51kg shells, 1935 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
      28 - 1.57" / 40.0 mm guns (7x4 guns), 1.95lbs / 0.89kg shells, 1935 Model
   Anti-aircraft guns in deck mounts 
   on side ends, majority aft, 3 raised mounts - superfiring
 Weight of broadside 1,607 lbs / 729 kg
 Shells per gun, main battery: 150
 16 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 550.00 ft / 167.64 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 131 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 162,325 shp / 121,094 Kw = 36.00 kts
 Range 8,500nm at 15.00 kts
 Bunker at max displacement = 2,338 tons

Complement:
 649 - 845

Cost:
 £6.368 million / $25.474 million

Distribution of weights at normal displacement:
 Armament: 201 tons, 1.4 %
 Armour: 2,471 tons, 17.4 %
    - Belts: 1,053 tons, 7.4 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 384 tons, 2.7 %
    - Armour Deck: 983 tons, 6.9 %
    - Conning Tower: 51 tons, 0.4 %
 Machinery: 4,612 tons, 32.5 %
 Hull, fittings & equipment: 5,192 tons, 36.6 %
 Fuel, ammunition & stores: 1,725 tons, 12.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   12,772 lbs / 5,793 Kg = 118.3 x 6.0 " / 152 mm shells or 1.4 torpedoes
 Stability (Unstable if below 1.00): 1.21
 Metacentric height 3.5 ft / 1.1 m
 Roll period: 14.0 seconds
 Steadiness - As gun platform (Average = 50 %): 53 %
   - Recoil effect (Restricted arc if above 1.00): 0.36
 Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.497
 Length to Beam Ratio: 10.40 : 1
 'Natural speed' for length: 25.40 kts
 Power going to wave formation at top speed: 60 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  27.00 ft / 8.23 m
    - Forecastle (20 %): 25.00 ft / 7.62 m
    - Mid (67 %):  25.00 ft / 7.62 m (17.00 ft / 5.18 m aft of break)
    - Quarterdeck (15 %): 17.00 ft / 5.18 m
    - Stern:  17.00 ft / 5.18 m
    - Average freeboard: 22.52 ft / 6.86 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 116.5 %
  - Above water (accommodation/working, high = better): 128.7 %
 Waterplane Area: 26,575 Square feet or 2,469 Square metres
 Displacement factor (Displacement / loading): 107 %
 Structure weight / hull surface area: 110 lbs/sq ft or 538 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.65
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

A more capable British light cruiser is possible by 1931

By ballooning the displacement even more, a 35-knot light cruiser with 12-6in QF, 8-4in AA, 28-2pdr AA, and 16-21in TT is possible. The armour basis is still 4in and the range is now 8,200nm at 15 knots. This design, the GB/CL/1931, is roughly comparable to the Mogami class prior to being rearmed with 8in guns. This is the Springsharp report:

GB/CL/1931, Great Britain Light Cruiser laid down 1931

Displacement:
 11,644 t light; 12,052 t standard; 13,300 t normal; 14,298 t full load

Dimensions: Length overall / water x beam x draught
 626.42 ft / 625.00 ft x 61.00 ft x 24.00 ft (normal load)
 190.93 m / 190.50 m x 18.59 m  x 7.32 m

Armament:
      12 - 6.00" / 152 mm guns (4x3 guns), 108.00lbs / 48.99kg shells, 1931 Model
   Quick firing guns in turrets (on barbettes)
   on centreline ends, evenly spread, 1 raised mount - superfiring
      8 - 4.00" / 102 mm guns (4x2 guns), 32.00lbs / 14.51kg shells, 1931 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
      28 - 1.57" / 40.0 mm guns (7x4 guns), 1.95lbs / 0.89kg shells, 1931 Model
   Anti-aircraft guns in deck mounts 
   on side ends, majority aft, 3 raised mounts - superfiring
 Weight of broadside 1,607 lbs / 729 kg
 Shells per gun, main battery: 150
 16 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 550.00 ft / 167.64 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 135 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 141,896 shp / 105,854 Kw = 35.00 kts
 Range 8,200nm at 15.00 kts
 Bunker at max displacement = 2,246 tons

Complement:
 619 - 805

Cost:
 £5.107 million / $20.427 million

Distribution of weights at normal displacement:
 Armament: 201 tons, 1.5 %
 Armour: 2,417 tons, 18.2 %
    - Belts: 1,049 tons, 7.9 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 372 tons, 2.8 %
    - Armour Deck: 947 tons, 7.1 %
    - Conning Tower: 48 tons, 0.4 %
 Machinery: 4,243 tons, 31.9 %
 Hull, fittings & equipment: 4,783 tons, 36.0 %
 Fuel, ammunition & stores: 1,656 tons, 12.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   12,129 lbs / 5,502 Kg = 112.3 x 6.0 " / 152 mm shells or 1.4 torpedoes
 Stability (Unstable if below 1.00): 1.22
 Metacentric height 3.4 ft / 1.0 m
 Roll period: 13.8 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.37
 Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.509
 Length to Beam Ratio: 10.25 : 1
 'Natural speed' for length: 25.00 kts
 Power going to wave formation at top speed: 60 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  27.00 ft / 8.23 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
    - Quarterdeck (15 %): 16.00 ft / 4.88 m
    - Stern:  16.00 ft / 4.88 m
    - Average freeboard: 21.60 ft / 6.58 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 115.4 %
  - Above water (accommodation/working, high = better): 122.0 %
 Waterplane Area: 25,606 Square feet or 2,379 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 108 lbs/sq ft or 527 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.55
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

The GB/CL/1927 design

This is sort of a heftier version of the Italian light cruisers. The maximum speed is 34.5 knots and the range is 8,000nm at 15 knots. The armour basis is still 4in. The armament is 9-6in QF in triple turrets, 8-4.7in AA, 28-2pdr AA guns, and 16-21in TT. This is the Springsharp report:

GB/CL/1927, Great Britain Light Cruiser laid down 1927

Displacement:
 11,268 t light; 11,657 t standard; 12,900 t normal; 13,895 t full load

Dimensions: Length overall / water x beam x draught
 616.42 ft / 615.00 ft x 59.00 ft x 23.00 ft (normal load)
 187.88 m / 187.45 m x 17.98 m  x 7.01 m

Armament:
      9 - 6.00" / 152 mm guns (3x3 guns), 108.00lbs / 48.99kg shells, 1927 Model
   Quick firing guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      8 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1927 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
      28 - 1.57" / 40.0 mm guns (7x4 guns), 1.95lbs / 0.89kg shells, 1927 Model
   Anti-aircraft guns in deck mounts 
   on side ends, majority aft, 3 raised mounts - superfiring
 Weight of broadside 1,442 lbs / 654 kg
 Shells per gun, main battery: 150
 16 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 550.00 ft / 167.64 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 138 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 133,899 shp / 99,889 Kw = 34.50 kts
 Range 8,000nm at 15.00 kts
 Bunker at max displacement = 2,238 tons

Complement:
 604 - 786

Cost:
 £4.136 million / $16.546 million

Distribution of weights at normal displacement:
 Armament: 180 tons, 1.4 %
 Armour: 2,319 tons, 18.0 %
    - Belts: 1,047 tons, 8.1 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 295 tons, 2.3 %
    - Armour Deck: 929 tons, 7.2 %
    - Conning Tower: 47 tons, 0.4 %
 Machinery: 4,227 tons, 32.8 %
 Hull, fittings & equipment: 4,543 tons, 35.2 %
 Fuel, ammunition & stores: 1,632 tons, 12.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   11,498 lbs / 5,215 Kg = 106.5 x 6.0 " / 152 mm shells or 1.3 torpedoes
 Stability (Unstable if below 1.00): 1.23
 Metacentric height 3.3 ft / 1.0 m
 Roll period: 13.6 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.38
 Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.541
 Length to Beam Ratio: 10.42 : 1
 'Natural speed' for length: 24.80 kts
 Power going to wave formation at top speed: 60 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  27.00 ft / 8.23 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
    - Quarterdeck (15 %): 16.00 ft / 4.88 m
    - Stern:  16.00 ft / 4.88 m
    - Average freeboard: 21.60 ft / 6.58 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 117.3 %
  - Above water (accommodation/working, high = better): 120.1 %
 Waterplane Area: 25,111 Square feet or 2,333 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 104 lbs/sq ft or 507 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.56
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

An incremental advance to the GB/CL/1923

The increase in performance to the GB/CL/1923 is not huge, but the result is still a better design than its predecessor from 1921. This ship has a similar armament: 8-6in QF, 6-4.7in AA, 24-2pdr AA, and 16-21in TT. The speed is now 33.75 knots for a range of 7,800nm at 15 knots. The main armament is light, but the armour basis is 4in with a 2in deck. This is the Springsharp report:

GB/CL/1923, Great Britain Light Cruiser laid down 1923

Displacement:
 10,627 t light; 10,981 t standard; 12,200 t normal; 13,175 t full load

Dimensions: Length overall / water x beam x draught
 596.42 ft / 595.00 ft x 58.00 ft x 23.00 ft (normal load)
 181.79 m / 181.36 m x 17.68 m  x 7.01 m

Armament:
      8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1923 Model
   Quick firing guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      6 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1923 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships
      24 - 1.57" / 40.0 mm guns (6x4 guns), 2.00lbs / 0.91kg shells, 1923 Model
   Breech loading guns in deck mounts 
   on side ends, evenly spread
 Weight of broadside 1,223 lbs / 555 kg
 Shells per gun, main battery: 150
 16 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 520.00 ft / 158.50 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 134 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 120,061 shp / 89,566 Kw = 33.75 kts
 Range 7,800nm at 15.00 kts
 Bunker at max displacement = 2,194 tons

Complement:
 579 - 754

Cost:
 £3.090 million / $12.359 million

Distribution of weights at normal displacement:
 Armament: 153 tons, 1.3 %
 Armour: 2,232 tons, 18.3 %
    - Belts: 994 tons, 8.1 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 311 tons, 2.5 %
    - Armour Deck: 881 tons, 7.2 %
    - Conning Tower: 46 tons, 0.4 %
 Machinery: 4,013 tons, 32.9 %
 Hull, fittings & equipment: 4,230 tons, 34.7 %
 Fuel, ammunition & stores: 1,573 tons, 12.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   10,937 lbs / 4,961 Kg = 101.3 x 6.0 " / 152 mm shells or 1.3 torpedoes
 Stability (Unstable if below 1.00): 1.22
 Metacentric height 3.2 ft / 1.0 m
 Roll period: 13.7 seconds
 Steadiness - As gun platform (Average = 50 %): 55 %
   - Recoil effect (Restricted arc if above 1.00): 0.36
 Seaboat quality  (Average = 1.00): 1.10

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.538
 Length to Beam Ratio: 10.26 : 1
 'Natural speed' for length: 24.39 kts
 Power going to wave formation at top speed: 60 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  27.00 ft / 8.23 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
    - Quarterdeck (15 %): 16.00 ft / 4.88 m
    - Stern:  16.00 ft / 4.88 m
    - Average freeboard: 21.60 ft / 6.58 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 116.6 %
  - Above water (accommodation/working, high = better): 116.1 %
 Waterplane Area: 23,814 Square feet or 2,212 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 100 lbs/sq ft or 490 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.66
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is adequate

The GB/CL/1921 light cruiser in this design series

The next installment of my British light cruiser design series is the GB/CL/1921. This is as large as it is for several reasons. One is that the speed is somewhat high at 33 knots. The range is also substantial at 7,200nm at 15 knots. The armour basis is 4in with a 2in deck, and that is a contributing factor. The armament is little different: 8-6in QF, 4-4in AA, 16-2pdr AA, and 12-21in TT. One thing I found is that if you leave the submerged tubes blank, rather than zero, bad things happen. I wouldn't be surprised if something like that appears in some of the other designs. This is the Springsharp report:

GB/CL/1921, Great Britain Light Cruiser laid down 1921

Displacement:
 10,066 t light; 10,386 t standard; 11,500 t normal; 12,391 t full load

Dimensions: Length overall / water x beam x draught
 576.42 ft / 575.00 ft x 58.00 ft x 21.00 ft (normal load)
 175.69 m / 175.26 m x 17.68 m  x 6.40 m

Armament:
      8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1921 Model
   Quick firing guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1921 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships
      16 - 1.57" / 40.0 mm guns (4x4 guns), 1.95lbs / 0.89kg shells, 1921 Model
   Breech loading guns in deck mounts 
   on side ends, evenly spread
 Weight of broadside 1,023 lbs / 464 kg
 Shells per gun, main battery: 150
 12 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 485.00 ft / 147.83 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 130 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 109,722 shp / 81,853 Kw = 33.00 kts
 Range 7,200nm at 15.00 kts
 Bunker at max displacement = 2,006 tons

Complement:
 554 - 721

Cost:
 £2.517 million / $10.067 million

Distribution of weights at normal displacement:
 Armament: 128 tons, 1.1 %
 Armour: 2,172 tons, 18.9 %
    - Belts: 936 tons, 8.1 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 311 tons, 2.7 %
    - Armour Deck: 881 tons, 7.7 %
    - Conning Tower: 44 tons, 0.4 %
 Machinery: 3,778 tons, 32.9 %
 Hull, fittings & equipment: 3,988 tons, 34.7 %
 Fuel, ammunition & stores: 1,434 tons, 12.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   10,982 lbs / 4,982 Kg = 101.7 x 6.0 " / 152 mm shells or 1.3 torpedoes
 Stability (Unstable if below 1.00): 1.23
 Metacentric height 3.2 ft / 1.0 m
 Roll period: 13.5 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.30
 Seaboat quality  (Average = 1.00): 1.07

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.575
 Length to Beam Ratio: 9.91 : 1
 'Natural speed' for length: 23.98 kts
 Power going to wave formation at top speed: 61 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  27.00 ft / 8.23 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
    - Quarterdeck (15 %): 16.00 ft / 4.88 m
    - Stern:  16.00 ft / 4.88 m
    - Average freeboard: 21.60 ft / 6.58 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 115.4 %
  - Above water (accommodation/working, high = better): 134.2 %
 Waterplane Area: 23,821 Square feet or 2,213 Square metres
 Displacement factor (Displacement / loading): 107 %
 Structure weight / hull surface area: 98 lbs/sq ft or 478 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.63
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

My attempt at a 1918 British light cruiser

Perhaps this is anachronistic, but I thought that having four twin 6in turrets was not unreasonable for a ship laid down in 1918. This is meant to be an incremental advance over my GB/CL/1916 design. It is not a great advance, except for the turrets. There is some increase in speed and range. I couldn't resist a Springsharp-specific "hack" of increasing the draft for more strength and increased seakeeping. This is the Springsharp report:

GB/CL/1918, Great Britain Light Cruiser laid down 1918

Displacement:
 8,996 t light; 9,290 t standard; 10,200 t normal; 10,928 t full load

Dimensions: Length overall / water x beam x draught
 556.36 ft / 555.00 ft x 56.00 ft x 20.00 ft (normal load)
 169.58 m / 169.16 m x 17.07 m  x 6.10 m

Armament:
      8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1918 Model
   Quick firing guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1918 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships
      16 - 1.57" / 40.0 mm guns (4x4 guns), 1.95lbs / 0.89kg shells, 1918 Model
   Breech loading guns in deck mounts 
   on side ends, evenly spread
 Weight of broadside 1,023 lbs / 464 kg
 Shells per gun, main battery: 150
 8 - 21.0" / 533.4 mm above water torpedoes, 21 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 425.00 ft / 129.54 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 118 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 2.00" / 51 mm       -   2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 97,206 shp / 72,515 Kw = 32.50 kts
 Range 5,800nm at 15.00 kts
 Bunker at max displacement = 1,639 tons

Complement:
 506 - 659

Cost:
 £1.826 million / $7.306 million

Distribution of weights at normal displacement:
 Armament: 128 tons, 1.3 %
 Armour: 1,835 tons, 18.0 %
    - Belts: 832 tons, 8.2 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 142 tons, 1.4 %
    - Armour Deck: 821 tons, 8.0 %
    - Conning Tower: 41 tons, 0.4 %
 Machinery: 3,507 tons, 34.4 %
 Hull, fittings & equipment: 3,526 tons, 34.6 %
 Fuel, ammunition & stores: 1,204 tons, 11.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   4,601 lbs / 2,087 Kg = 42.6 x 6.0 " / 152 mm shells or 0.7 torpedoes
 Stability (Unstable if below 1.00): 1.28
 Metacentric height 3.3 ft / 1.0 m
 Roll period: 13.0 seconds
 Steadiness - As gun platform (Average = 50 %): 53 %
   - Recoil effect (Restricted arc if above 1.00): 0.32
 Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.574
 Length to Beam Ratio: 9.91 : 1
 'Natural speed' for length: 23.56 kts
 Power going to wave formation at top speed: 61 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  26.00 ft / 7.92 m
    - Forecastle (20 %): 23.00 ft / 7.01 m
    - Mid (67 %):  23.00 ft / 7.01 m (15.00 ft / 4.57 m aft of break)
    - Quarterdeck (15 %): 15.00 ft / 4.57 m
    - Stern:  15.00 ft / 4.57 m
    - Average freeboard: 20.60 ft / 6.28 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 169.4 %
  - Above water (accommodation/working, high = better): 142.8 %
 Waterplane Area: 22,191 Square feet or 2,062 Square metres
 Displacement factor (Displacement / loading): 103 %
 Structure weight / hull surface area: 94 lbs/sq ft or 458 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.56
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

A GB/CL/1916 light cruiser design

Continuing this design series, this is my first attempt at a 1916 British light cruiser. The armament is 9-6in QF, 4-3in AA, 12-2pdr AA guns, and 8-21in TT (above water). The armour basis is still 4in with a 2in deck. The maximum speed has risen to 32 knots and the range is 5,400nm at 15 knots. This is the Springsharp report:

GB/CL/1916, Great Britain Light Cruiser laid down 1916

Displacement:
 8,704 t light; 8,992 t standard; 9,900 t normal; 10,626 t full load

Dimensions: Length overall / water x beam x draught
 546.36 ft / 545.00 ft x 55.00 ft x 18.00 ft (normal load)
 166.53 m / 166.12 m x 16.76 m  x 5.49 m

Armament:
      9 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1916 Model
   Quick firing guns in deck mounts with hoists
   on centreline ends, majority forward, 2 raised mounts - superfiring
      4 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1916 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships
      12 - 1.57" / 40.0 mm guns (3x4 guns), 2.00lbs / 0.91kg shells, 1916 Model
   Breech loading guns in deck mounts 
   on side ends, majority aft
 Weight of broadside 1,050 lbs / 476 kg
 Shells per gun, main battery: 150
 8 - 21.0" / 533.4 mm above water torpedoes, 21 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 420.00 ft / 128.02 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 119 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 2.00" / 51 mm       -   2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 93,429 shp / 69,698 Kw = 32.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 1,634 tons

Complement:
 496 - 645

Cost:
 £1.476 million / $5.905 million

Distribution of weights at normal displacement:
 Armament: 131 tons, 1.3 %
 Armour: 1,774 tons, 17.9 %
    - Belts: 823 tons, 8.3 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 68 tons, 0.7 %
    - Armour Deck: 844 tons, 8.5 %
    - Conning Tower: 40 tons, 0.4 %
 Machinery: 3,481 tons, 35.2 %
 Hull, fittings & equipment: 3,318 tons, 33.5 %
 Fuel, ammunition & stores: 1,196 tons, 12.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   4,353 lbs / 1,974 Kg = 40.3 x 6.0 " / 152 mm shells or 0.7 torpedoes
 Stability (Unstable if below 1.00): 1.34
 Metacentric height 3.4 ft / 1.0 m
 Roll period: 12.5 seconds
 Steadiness - As gun platform (Average = 50 %): 53 %
   - Recoil effect (Restricted arc if above 1.00): 0.31
 Seaboat quality  (Average = 1.00): 1.06

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.642
 Length to Beam Ratio: 9.91 : 1
 'Natural speed' for length: 23.35 kts
 Power going to wave formation at top speed: 62 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  26.00 ft / 7.92 m
    - Forecastle (20 %): 23.00 ft / 7.01 m
    - Mid (67 %):  23.00 ft / 7.01 m (15.00 ft / 4.57 m aft of break)
    - Quarterdeck (15 %): 15.00 ft / 4.57 m
    - Stern:  15.00 ft / 4.57 m
    - Average freeboard: 20.60 ft / 6.28 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 176.2 %
  - Above water (accommodation/working, high = better): 148.5 %
 Waterplane Area: 22,799 Square feet or 2,118 Square metres
 Displacement factor (Displacement / loading): 101 %
 Structure weight / hull surface area: 89 lbs/sq ft or 432 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.51
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

A new GB/CL/1914 design

This is inspired by the sort of ship the Russians were building at the beginning of WWI. I wanted a multi-purpose light cruiser with decent protection and armament with a 30 knot speed. The armament is 7-6in QF, 2-3in AA, and 4-21in TT. The belt is 4in and the deck is 2in. The range is 5,000nm at 15 knots. This is the Springsharp report:

GB/CL/1914, Great Britain Light Cruiser laid down 1914

Displacement:
 6,618 t light; 6,836 t standard; 7,600 t normal; 8,211 t full load

Dimensions: Length overall / water x beam x draught
 513.31 ft / 512.00 ft x 52.00 ft x 18.00 ft (normal load)
 156.46 m / 156.06 m x 15.85 m  x 5.49 m

Armament:
      7 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1914 Model
   Quick firing guns in deck mounts with hoists
   on centreline ends, majority forward, 2 raised mounts - superfiring
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1914 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships
 Weight of broadside 783 lbs / 355 kg
 Shells per gun, main battery: 150
 4 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 390.00 ft / 118.87 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 117 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 2.00" / 51 mm       -   2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 59,938 shp / 44,714 Kw = 30.00 kts
 Range 5,000nm at 15.00 kts
 Bunker at max displacement = 1,376 tons

Complement:
 406 - 529

Cost:
 £0.811 million / $3.243 million

Distribution of weights at normal displacement:
 Armament: 98 tons, 1.3 %
 Armour: 1,540 tons, 20.3 %
    - Belts: 764 tons, 10.0 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 53 tons, 0.7 %
    - Armour Deck: 691 tons, 9.1 %
    - Conning Tower: 33 tons, 0.4 %
 Machinery: 2,309 tons, 30.4 %
 Hull, fittings & equipment: 2,671 tons, 35.1 %
 Fuel, ammunition & stores: 982 tons, 12.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   8,682 lbs / 3,938 Kg = 80.4 x 6.0 " / 152 mm shells or 1.2 torpedoes
 Stability (Unstable if below 1.00): 1.28
 Metacentric height 2.9 ft / 0.9 m
 Roll period: 12.8 seconds
 Steadiness - As gun platform (Average = 50 %): 65 %
   - Recoil effect (Restricted arc if above 1.00): 0.33
 Seaboat quality  (Average = 1.00): 1.30

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.555
 Length to Beam Ratio: 9.85 : 1
 'Natural speed' for length: 22.63 kts
 Power going to wave formation at top speed: 58 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  25.00 ft / 7.62 m
    - Forecastle (20 %): 22.00 ft / 6.71 m
    - Mid (67 %):  22.00 ft / 6.71 m (14.00 ft / 4.27 m aft of break)
    - Quarterdeck (15 %): 14.00 ft / 4.27 m
    - Stern:  14.00 ft / 4.27 m
    - Average freeboard: 19.60 ft / 5.97 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 108.8 %
  - Above water (accommodation/working, high = better): 155.3 %
 Waterplane Area: 18,669 Square feet or 1,734 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 83 lbs/sq ft or 407 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.75
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily

A really super heavy cruiser for 1923

I am not sure what to think of 10in guns on a heavy cruiser, but I tried them on a 1923 design to be built if there were no Washington Naval Treaty. This is another flush-decked ship with triple turrets for the main armament. The armament in this case is like other 1923 ships, in that it is the start of a modern approach with DP guns for the secondary armament. The armament is 9-10in BLR, 8-4.7in DP, and 36-2pdr AA in quad mounts. There are no torpedo tubes. The armour basis is 6in with a thick 3in deck. There is also a 1in torpedo bulkhead. The range has grown to 7,500nm at 15 knots. The maximum speed has moved up to 33.5 knots, thanks to the transom stern. This is the Springsharp report:

GB/CA/1923, Great Britain Heavy Cruiser laid down 1923

Displacement:
 20,042 t light; 20,746 t standard; 22,400 t normal; 23,723 t full load

Dimensions: Length overall / water x beam x draught
 718.10 ft / 714.00 ft x 75.00 ft x 25.00 ft (normal load)
 218.88 m / 217.63 m x 22.86 m  x 7.62 m

Armament:
      9 - 10.00" / 254 mm guns (3x3 guns), 500.00lbs / 226.80kg shells, 1923 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      8 - 4.70" / 119 mm guns (4x2 guns), 51.91lbs / 23.55kg shells, 1923 Model
   Dual purpose guns in turrets (on barbettes)
   on side, all amidships, all raised mounts - superfiring
      36 - 1.57" / 40.0 mm guns (9x4 guns), 2.00lbs / 0.91kg shells, 1923 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread
 Weight of broadside 4,987 lbs / 2,262 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 620.00 ft / 188.98 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 134 % of normal length

   - Torpedo Bulkhead:
  1.00" / 25 mm 620.00 ft / 188.98 m 23.00 ft / 7.01 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 6.00" / 152 mm 4.00" / 102 mm  6.00" / 152 mm
 2nd: 1.00" / 25 mm 1.00" / 25 mm  1.00" / 25 mm
 3rd: 1.00" / 25 mm       -         -

   - Armour deck: 3.00" / 76 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 141,351 shp / 105,448 Kw = 33.50 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 2,977 tons

Complement:
 915 - 1,190

Cost:
 £5.488 million / $21.950 million

Distribution of weights at normal displacement:
 Armament: 623 tons, 2.8 %
 Armour: 6,196 tons, 27.7 %
    - Belts: 2,387 tons, 10.7 %
    - Torpedo bulkhead: 528 tons, 2.4 %
    - Armament: 944 tons, 4.2 %
    - Armour Deck: 2,235 tons, 10.0 %
    - Conning Tower: 103 tons, 0.5 %
 Machinery: 4,724 tons, 21.1 %
 Hull, fittings & equipment: 8,499 tons, 37.9 %
 Fuel, ammunition & stores: 2,358 tons, 10.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   29,961 lbs / 13,590 Kg = 59.9 x 10.0 " / 254 mm shells or 3.6 torpedoes
 Stability (Unstable if below 1.00): 1.15
 Metacentric height 4.2 ft / 1.3 m
 Roll period: 15.3 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.62
 Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
 Hull has a flush deck
   and transom stern
 Block coefficient: 0.586
 Length to Beam Ratio: 9.52 : 1
 'Natural speed' for length: 30.33 kts
 Power going to wave formation at top speed: 57 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  30.00 ft / 9.14 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (50 %):  24.00 ft / 7.32 m
    - Quarterdeck (15 %): 24.00 ft / 7.32 m
    - Stern:  24.00 ft / 7.32 m
    - Average freeboard: 24.48 ft / 7.46 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 122.2 %
  - Above water (accommodation/working, high = better): 201.1 %
 Waterplane Area: 40,261 Square feet or 3,740 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 139 lbs/sq ft or 679 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.28
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

A super ship: the GB/CA/1921

The GB/CA/1921 seems like a super ship, compared to its predecessor designs. This ship has 9-9.2in BLR, 12-4.7in QF, 6-4.7in AA, and 32-2pdr AA guns. The armour basis is 6in with a 2.5in deck. The maximum speed is 33 knots with a range of 6,500nm at 15 knots. The hull is flush-decked and has a transom stern. This is the Springsharp report:

GB/CA/1921, Great Britain Heavy Cruiser laid down 1921

Displacement:
 17,722 t light; 18,434 t standard; 19,800 t normal; 20,893 t full load

Dimensions: Length overall / water x beam x draught
 678.03 ft / 674.00 ft x 69.00 ft x 24.00 ft (normal load)
 206.66 m / 205.44 m x 21.03 m  x 7.32 m

Armament:
      9 - 9.20" / 234 mm guns (3x3 guns), 389.34lbs / 176.60kg shells, 1921 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      12 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1921 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships, 4 raised mounts - superfiring
      6 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1921 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread
      32 - 1.57" / 40.0 mm guns (8x4 guns), 1.95lbs / 0.89kg shells, 1921 Model
   Anti-aircraft guns in deck mounts 
   on side ends, evenly spread
 Weight of broadside 4,501 lbs / 2,042 kg
 Shells per gun, main battery: 120

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 595.00 ft / 181.36 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 136 % of normal length

   - Torpedo Bulkhead:
  1.00" / 25 mm 595.00 ft / 181.36 m 21.00 ft / 6.40 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 6.00" / 152 mm 4.00" / 102 mm  6.00" / 152 mm
 2nd: 2.00" / 51 mm       -   2.00" / 51 mm
 4th: 1.00" / 25 mm       -         -

   - Armour deck: 2.50" / 64 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 127,925 shp / 95,432 Kw = 33.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 2,459 tons

Complement:
 833 - 1,084

Cost:
 £4.352 million / $17.407 million

Distribution of weights at normal displacement:
 Armament: 563 tons, 2.8 %
 Armour: 5,369 tons, 27.1 %
    - Belts: 2,286 tons, 11.5 %
    - Torpedo bulkhead: 462 tons, 2.3 %
    - Armament: 854 tons, 4.3 %
    - Armour Deck: 1,672 tons, 8.4 %
    - Conning Tower: 95 tons, 0.5 %
 Machinery: 4,405 tons, 22.2 %
 Hull, fittings & equipment: 7,385 tons, 37.3 %
 Fuel, ammunition & stores: 2,078 tons, 10.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   25,139 lbs / 11,403 Kg = 64.6 x 9.2 " / 234 mm shells or 2.9 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 3.6 ft / 1.1 m
 Roll period: 15.3 seconds
 Steadiness - As gun platform (Average = 50 %): 53 %
   - Recoil effect (Restricted arc if above 1.00): 0.76
 Seaboat quality  (Average = 1.00): 1.07

Hull form characteristics:
 Hull has a flush deck
   and transom stern
 Block coefficient: 0.621
 Length to Beam Ratio: 9.77 : 1
 'Natural speed' for length: 29.32 kts
 Power going to wave formation at top speed: 59 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  29.00 ft / 8.84 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m
    - Quarterdeck (15 %): 24.00 ft / 7.32 m
    - Stern:  24.00 ft / 7.32 m
    - Average freeboard: 24.40 ft / 7.44 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 132.6 %
  - Above water (accommodation/working, high = better): 198.5 %
 Waterplane Area: 36,162 Square feet or 3,360 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 130 lbs/sq ft or 634 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.42
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

The British 1918 heavy cruiser worked much better

Like the 1916 design, the 1918 British heavy cruiser design, continuing the design series, has 8-9.2in guns. It also has 12-4.7in QF, 4-4.7in AA, and 16-2pdr AA guns. Again, there are no torpedo tubes. The armour basis is 4in, although there are 5in turret faces on the 9.2in guns. The speed is increased to 32 knots. As this design series is pretty conservative, I did not try for a higher speed. The range is increased to 5,400nm at a cruising speed of 15 knots. This is the Springsharp report:

GB/CA/1916, Great Britain Heavy Cruiser laid down 1918

Displacement:
 14,648 t light; 15,255 t standard; 16,400 t normal; 17,316 t full load

Dimensions: Length overall / water x beam x draught
 655.96 ft / 654.00 ft x 66.00 ft x 23.00 ft (normal load)
 199.94 m / 199.34 m x 20.12 m  x 7.01 m

Armament:
      8 - 9.20" / 234 mm guns (4x2 guns), 389.34lbs / 176.60kg shells, 1918 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1918 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships, 4 raised mounts - superfiring
      4 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1918 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread
      16 - 1.57" / 40.0 mm guns (4x4 guns), 1.95lbs / 0.89kg shells, 1918 Model
   Anti-aircraft guns in deck mounts 
   on side ends, evenly spread
 Weight of broadside 3,977 lbs / 1,804 kg
 Shells per gun, main battery: 120

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 575.00 ft / 175.26 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 135 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 575.00 ft / 175.26 m 21.00 ft / 6.40 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 5.00" / 127 mm 3.00" / 76 mm  4.00" / 102 mm
 2nd: 2.00" / 51 mm       -   2.00" / 51 mm
 4th: 1.00" / 25 mm       -         -

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 114,044 shp / 85,077 Kw = 32.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 2,062 tons

Complement:
 723 - 941

Cost:
 £3.012 million / $12.050 million

Distribution of weights at normal displacement:
 Armament: 497 tons, 3.0 %
 Armour: 3,740 tons, 22.8 %
    - Belts: 1,470 tons, 9.0 %
    - Torpedo bulkhead: 447 tons, 2.7 %
    - Armament: 624 tons, 3.8 %
    - Armour Deck: 1,144 tons, 7.0 %
    - Conning Tower: 56 tons, 0.3 %
 Machinery: 4,114 tons, 25.1 %
 Hull, fittings & equipment: 6,297 tons, 38.4 %
 Fuel, ammunition & stores: 1,752 tons, 10.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   17,873 lbs / 8,107 Kg = 45.9 x 9.2 " / 234 mm shells or 2.2 torpedoes
 Stability (Unstable if below 1.00): 1.15
 Metacentric height 3.5 ft / 1.1 m
 Roll period: 14.9 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.80
 Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.578
 Length to Beam Ratio: 9.91 : 1
 'Natural speed' for length: 25.57 kts
 Power going to wave formation at top speed: 56 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  28.00 ft / 8.53 m
    - Forecastle (20 %): 25.00 ft / 7.62 m
    - Mid (67 %):  25.00 ft / 7.62 m (17.00 ft / 5.18 m aft of break)
    - Quarterdeck (15 %): 17.00 ft / 5.18 m
    - Stern:  17.00 ft / 5.18 m
    - Average freeboard: 22.60 ft / 6.89 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 150.1 %
  - Above water (accommodation/working, high = better): 185.7 %
 Waterplane Area: 30,931 Square feet or 2,874 Square metres
 Displacement factor (Displacement / loading): 103 %
 Structure weight / hull surface area: 126 lbs/sq ft or 616 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.29
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

A 1916 British 8-in gun cruiser

I tried a 1916 British 8-in gun cruiser, but the armour situation seems very strange. Even with a complete belt, I was not able to satisfy Springsharp, so I shorted the belt to a more modest length. The armament is 8-8in BLR, 8-4.7in QF, 2-4in AA, and 12-2pdr AA guns. There are no torpedo tubes, even though there could have been. The belt is still 4in and the deck is 2in. The maximum speed is 31 knots with a 15 knot cruising speed for a range of 4,800nm. I suspect that there is some design flaw, but I do not see what it is. This is the Sprinsharp report:

GB/CA/1916, Great Britain Heavy Cruiser laid down 1916

Displacement:
 12,989 t light; 13,529 t standard; 14,550 t normal; 15,367 t full load

Dimensions: Length overall / water x beam x draught
 615.89 ft / 614.00 ft x 62.00 ft x 22.00 ft (normal load)
 187.72 m / 187.15 m x 18.90 m  x 6.71 m

Armament:
      8 - 9.20" / 234 mm guns (4x2 guns), 389.34lbs / 176.60kg shells, 1916 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      8 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1916 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships
      2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1916 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread
      12 - 1.57" / 40.0 mm guns (3x4 guns), 2.00lbs / 0.91kg shells, 1916 Model
   Anti-aircraft guns in deck mounts 
   on side ends, majority aft
 Weight of broadside 3,618 lbs / 1,641 kg
 Shells per gun, main battery: 120

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 545.00 ft / 166.12 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 137 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 545.00 ft / 166.12 m 21.00 ft / 6.40 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm
 2nd: 2.00" / 51 mm       -   2.00" / 51 mm
 4th: 1.00" / 25 mm       -         -

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 96,834 shp / 72,238 Kw = 31.00 kts
 Range 4,800nm at 15.00 kts
 Bunker at max displacement = 1,838 tons

Complement:
 662 - 861

Cost:
 £2.192 million / $8.768 million

Distribution of weights at normal displacement:
 Armament: 452 tons, 3.1 %
 Armour: 3,472 tons, 23.9 %
    - Belts: 1,393 tons, 9.6 %
    - Torpedo bulkhead: 423 tons, 2.9 %
    - Armament: 566 tons, 3.9 %
    - Armour Deck: 1,038 tons, 7.1 %
    - Conning Tower: 51 tons, 0.4 %
 Machinery: 3,608 tons, 24.8 %
 Hull, fittings & equipment: 5,457 tons, 37.5 %
 Fuel, ammunition & stores: 1,561 tons, 10.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   15,698 lbs / 7,121 Kg = 40.3 x 9.2 " / 234 mm shells or 2.0 torpedoes
 Stability (Unstable if below 1.00): 1.14
 Metacentric height 3.1 ft / 0.9 m
 Roll period: 14.8 seconds
 Steadiness - As gun platform (Average = 50 %): 53 %
   - Recoil effect (Restricted arc if above 1.00): 0.87
 Seaboat quality  (Average = 1.00): 1.06

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.608
 Length to Beam Ratio: 9.90 : 1
 'Natural speed' for length: 24.78 kts
 Power going to wave formation at top speed: 57 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  27.00 ft / 8.23 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
    - Quarterdeck (15 %): 16.00 ft / 4.88 m
    - Stern:  16.00 ft / 4.88 m
    - Average freeboard: 21.60 ft / 6.58 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 153.9 %
  - Above water (accommodation/working, high = better): 175.8 %
 Waterplane Area: 28,053 Square feet or 2,606 Square metres
 Displacement factor (Displacement / loading): 102 %
 Structure weight / hull surface area: 120 lbs/sq ft or 586 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.32
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

A 1914 8-in gunned heavy cruiser

I thought an 8-in gunned heavy cruiser for 1914 might be an interesting design to try. The main difficulty is that I don't see the British building a cruiser with 8in guns in 1914. Aside from that, this seems viable. The armament is 8-8in BLR, 4-4.7in QF guns with shields, 2-3in AA guns, and 4-21in TT in deck mounts. The armour basis is 4in with a 2in deck. The maximum speed is 30 knots with a 15 knot cruising speed for a range of 4,800 miles. Of course, I used oil-fired boilers. This is the Sprinsharp report:

GB/CA/1914, Great Britain Cruiser laid down 1914

Displacement:
 10,487 t light; 10,852 t standard; 11,750 t normal; 12,469 t full load

Dimensions: Length overall / water x beam x draught
 546.42 ft / 545.00 ft x 72.00 ft x 21.00 ft (normal load)
 166.55 m / 166.12 m x 21.95 m  x 6.40 m

Armament:
      8 - 8.00" / 203 mm guns (4x2 guns), 256.00lbs / 116.12kg shells, 1914 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 4.70" / 119 mm guns in single mounts, 50.00lbs / 22.68kg shells, 1914 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread
      2 - 3.00" / 76.2 mm guns in single mounts, 13.00lbs / 5.90kg shells, 1914 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread
 Weight of broadside 2,274 lbs / 1,031 kg
 Shells per gun, main battery: 100
 4 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 440.00 ft / 134.11 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 124 % of normal length

   - Torpedo Bulkhead:
  1.00" / 25 mm 440.00 ft / 134.11 m 20.00 ft / 6.10 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm
 2nd: 2.00" / 51 mm       -   2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 65,366 shp / 48,763 Kw = 30.00 kts
 Range 4,800nm at 15.00 kts
 Bunker at max displacement = 1,617 tons

Complement:
 563 - 733

Cost:
 £1.221 million / $4.883 million

Distribution of weights at normal displacement:
 Armament: 285 tons, 2.4 %
 Armour: 2,989 tons, 25.4 %
    - Belts: 1,152 tons, 9.8 %
    - Torpedo bulkhead: 326 tons, 2.8 %
    - Armament: 462 tons, 3.9 %
    - Armour Deck: 1,005 tons, 8.6 %
    - Conning Tower: 45 tons, 0.4 %
 Machinery: 2,518 tons, 21.4 %
 Hull, fittings & equipment: 4,695 tons, 40.0 %
 Fuel, ammunition & stores: 1,263 tons, 10.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   17,885 lbs / 8,112 Kg = 69.9 x 8.0 " / 203 mm shells or 2.8 torpedoes
 Stability (Unstable if below 1.00): 1.22
 Metacentric height 4.4 ft / 1.3 m
 Roll period: 14.4 seconds
 Steadiness - As gun platform (Average = 50 %): 55 %
   - Recoil effect (Restricted arc if above 1.00): 0.35
 Seaboat quality  (Average = 1.00): 1.10

Hull form characteristics:
 Hull has rise forward of midbreak
   and transom stern
 Block coefficient: 0.499
 Length to Beam Ratio: 7.57 : 1
 'Natural speed' for length: 27.27 kts
 Power going to wave formation at top speed: 59 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  27.00 ft / 8.23 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
    - Quarterdeck (15 %): 16.00 ft / 4.88 m
    - Stern:  16.00 ft / 4.88 m
    - Average freeboard: 21.60 ft / 6.58 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 122.2 %
  - Above water (accommodation/working, high = better): 186.1 %
 Waterplane Area: 27,165 Square feet or 2,524 Square metres
 Displacement factor (Displacement / loading): 114 %
 Structure weight / hull surface area: 117 lbs/sq ft or 572 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.73
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

I went overboard, tonight with the GB/CB/1941

I designed a mammoth, very fast battlecruiser for the British navy, tonight, that works well. The draft is an acceptable 35ft. This is something of a departure from the series that I have been designing, in that the hull is flush-decked and the ship has three triple turrets. The ship has the largest caliber guns allowed by Springsharp: 21in (I think). The ship is really a fast battleship, but given the high speed, I wanted to call the design a battlecruiser. The normal displacement is 160,000 tons. I went ahead and specified the 15,000nm range at 18 knots, so the design is suitable for Pacific warfare. The cost is outrageous, but the capability is so great that I don't mind. One of these ships could run to ground almost any other ship on the seas. Smaller ships could possibly outrun the ship in calm seas for a short distance, but in any sort of a seaway at all, this design would be faster, over a greater distance. This is the Springsharp report:

GB/CB/1941, Great Britain Battlecruiser laid down 1941

Displacement:
 140,234 t light; 145,356 t standard; 160,000 t normal; 171,715 t full load

Dimensions: Length overall / water x beam x draught
 1,255.15 ft / 1,250.00 ft x 150.00 ft x 35.00 ft (normal load)
 382.57 m / 381.00 m x 45.72 m  x 10.67 m

Armament:
      9 - 21.00" / 533 mm guns (3x3 guns), 4,630.50lbs / 2,100.36kg shells, 1941 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      24 - 4.50" / 114 mm guns (10 mounts), 45.56lbs / 20.67kg shells, 1941 Model
   Dual purpose guns in turrets (on barbettes)
   on side, evenly spread, 10 raised mounts
      72 - 1.57" / 40.0 mm guns (18x4 guns), 1.95lbs / 0.89kg shells, 1941 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread, 8 raised mounts
 Weight of broadside 42,909 lbs / 19,463 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 17.0" / 432 mm 840.00 ft / 256.03 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 13.0" / 330 mm 840.00 ft / 256.03 m 8.00 ft / 2.44 m
   Main Belt covers 103 % of normal length

   - Torpedo Bulkhead:
  8.00" / 203 mm 840.00 ft / 256.03 m 34.00 ft / 10.36 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 17.0" / 432 mm 13.0" / 330 mm  17.0" / 432 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm
 3rd: 1.00" / 25 mm       -         -

   - Armour deck: 9.00" / 229 mm, Conning tower: 12.00" / 305 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 8 shafts, 542,974 shp / 405,058 Kw = 35.00 kts
 Range 15,000nm at 18.00 kts
 Bunker at max displacement = 26,360 tons

Complement:
 3,999 - 5,200

Cost:
 £70.612 million / $282.447 million

Distribution of weights at normal displacement:
 Armament: 5,364 tons, 3.4 %
 Armour: 56,734 tons, 35.5 %
    - Belts: 8,597 tons, 5.4 %
    - Torpedo bulkhead: 8,454 tons, 5.3 %
    - Armament: 9,080 tons, 5.7 %
    - Armour Deck: 29,841 tons, 18.7 %
    - Conning Tower: 762 tons, 0.5 %
 Machinery: 14,349 tons, 9.0 %
 Hull, fittings & equipment: 63,787 tons, 39.9 %
 Fuel, ammunition & stores: 19,766 tons, 12.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   346,389 lbs / 157,119 Kg = 74.8 x 21.0 " / 533 mm shells or 88.6 torpedoes
 Stability (Unstable if below 1.00): 1.26
 Metacentric height 14.0 ft / 4.3 m
 Roll period: 16.8 seconds
 Steadiness - As gun platform (Average = 50 %): 59 %
   - Recoil effect (Restricted arc if above 1.00): 0.48
 Seaboat quality  (Average = 1.00): 1.18

Hull form characteristics:
 Hull has a flush deck
   and transom stern
 Block coefficient: 0.853
 Length to Beam Ratio: 8.33 : 1
 'Natural speed' for length: 39.71 kts
 Power going to wave formation at top speed: 51 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  45.00 ft / 13.72 m
    - Forecastle (20 %): 35.00 ft / 10.67 m
    - Mid (67 %):  35.00 ft / 10.67 m
    - Quarterdeck (15 %): 35.00 ft / 10.67 m
    - Stern:  35.00 ft / 10.67 m
    - Average freeboard: 35.80 ft / 10.91 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 63.3 %
  - Above water (accommodation/working, high = better): 298.8 %
 Waterplane Area: 179,226 Square feet or 16,651 Square metres
 Displacement factor (Displacement / loading): 125 %
 Structure weight / hull surface area: 284 lbs/sq ft or 1,387 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 1.14
  - Longitudinal: 0.95
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent

Talk about an "edgy" design: the GB/CB/1931

Continuing the current string of designs a step further is a design that is very edgy, in the sense of pushing the limits or propriety. The GB/CB/1931 has 8-20in BLR, 20-4.5in DP, and 56-2pdr AA guns. The armour basis is 16in and the maximum speed is 33 knots. The deck is up to 8in thick and the torpedo bulkhead is 6in. The range is a rather modest 8,500 nm, but that is at 18 knots. If the cruising speed is reduced to 15 knots, then the range opens up to a respectable 12,500nm. This is the Springsharp report:

GB/CB/1931, Great Britain Battlecruiser laid down 1931

Displacement:
 81,144 t light; 84,436 t standard; 90,600 t normal; 95,532 t full load

Dimensions: Length overall / water x beam x draught
 977.59 ft / 975.00 ft x 128.00 ft x 35.00 ft (normal load)
 297.97 m / 297.18 m x 39.01 m  x 10.67 m

Armament:
      8 - 20.00" / 508 mm guns (4x2 guns), 4,000.00lbs / 1,814.37kg shells, 1931 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      20 - 4.50" / 114 mm guns (10x2 guns), 45.56lbs / 20.67kg shells, 1931 Model
   Dual purpose guns in turrets (on barbettes)
   on side, evenly spread, all raised mounts
      56 - 1.57" / 40.0 mm guns (14x4 guns), 2.00lbs / 0.91kg shells, 1931 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread, 8 raised mounts
 Weight of broadside 33,023 lbs / 14,979 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 16.0" / 406 mm 650.00 ft / 198.12 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 12.0" / 305 mm 650.00 ft / 198.12 m 8.00 ft / 2.44 m
   Main Belt covers 103 % of normal length

   - Torpedo Bulkhead:
  6.00" / 152 mm 650.00 ft / 198.12 m 32.00 ft / 9.75 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 16.0" / 406 mm 12.0" / 305 mm  16.0" / 406 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm
 3rd: 1.00" / 25 mm       -         -

   - Armour deck: 8.00" / 203 mm, Conning tower: 12.00" / 305 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 6 shafts, 307,571 shp / 229,448 Kw = 33.00 kts
 Range 8,500nm at 18.00 kts
 Bunker at max displacement = 11,096 tons

Complement:
 2,610 - 3,394

Cost:
 £33.141 million / $132.565 million

Distribution of weights at normal displacement:
 Armament: 4,128 tons, 4.6 %
 Armour: 34,489 tons, 38.1 %
    - Belts: 6,257 tons, 6.9 %
    - Torpedo bulkhead: 4,618 tons, 5.1 %
    - Armament: 7,266 tons, 8.0 %
    - Armour Deck: 15,827 tons, 17.5 %
    - Conning Tower: 522 tons, 0.6 %
 Machinery: 9,198 tons, 10.2 %
 Hull, fittings & equipment: 33,329 tons, 36.8 %
 Fuel, ammunition & stores: 9,456 tons, 10.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   140,813 lbs / 63,872 Kg = 35.2 x 20.0 " / 508 mm shells or 26.1 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 9.2 ft / 2.8 m
 Roll period: 17.7 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.65
 Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
 Hull has rise forward of midbreak
   and transom stern
 Block coefficient: 0.726
 Length to Beam Ratio: 7.62 : 1
 'Natural speed' for length: 35.61 kts
 Power going to wave formation at top speed: 55 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  37.00 ft / 11.28 m
    - Forecastle (20 %): 31.00 ft / 9.45 m
    - Mid (67 %):  31.00 ft / 9.45 m (23.00 ft / 7.01 m aft of break)
    - Quarterdeck (15 %): 23.00 ft / 7.01 m
    - Stern:  23.00 ft / 7.01 m
    - Average freeboard: 28.84 ft / 8.79 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 79.7 %
  - Above water (accommodation/working, high = better): 224.6 %
 Waterplane Area: 106,938 Square feet or 9,935 Square metres
 Displacement factor (Displacement / loading): 105 %
 Structure weight / hull surface area: 239 lbs/sq ft or 1,169 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.99
  - Longitudinal: 1.06
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent

Is this really feasible? the GB/CB/1927

I had the idea, last night, that the next step would be to have an 18in-gunned battlecruiser in the same design series as the rest of the recent designs. This seems too good to be true, to me. The displacement is not that great, given the armament and speed (32 knots). True, I am not trying for the sort of range that American ships in the Pacific war had, where we would want a 15,000nm range. This is a 32-knot ship with 8-18in BLR, 16-6in QF, 6-4.7in AA, and 40-2pdr AA guns. The armour basis is a substantial 15in with a 7in deck and 5in torpedo bulkhead. The ship has a long forecastle and soft ends. The lower belt is thicker than the upper belt. I retained a thick CT, even though I don't really believe that it is needed. Everyone still had them at this date, so this design does, as well. This is the Springsharp report:

GB/CB/1927, Great Britain Battlecruiser laid down 1927

Displacement:
 63,705 t light; 66,289 t standard; 71,800 t normal; 76,208 t full load

Dimensions: Length overall / water x beam x draught
 917.45 ft / 915.00 ft x 116.00 ft x 33.00 ft (normal load)
 279.64 m / 278.89 m x 35.36 m  x 10.06 m

Armament:
      8 - 18.00" / 457 mm guns (4x2 guns), 2,916.00lbs / 1,322.68kg shells, 1927 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1927 Model
   Quick firing guns in turrets (on barbettes)
   on side, evenly spread, 4 raised mounts
      6 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1927 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread, 2 raised mounts
      40 - 1.57" / 40.0 mm guns (10x4 guns), 1.95lbs / 0.89kg shells, 1927 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread, 6 raised mounts
 Weight of broadside 25,446 lbs / 11,542 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 15.0" / 381 mm 600.00 ft / 182.88 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 10.0" / 254 mm 600.00 ft / 182.88 m 8.00 ft / 2.44 m
   Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
  5.00" / 127 mm 600.00 ft / 182.88 m 32.00 ft / 9.75 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 15.0" / 381 mm 11.0" / 279 mm  15.0" / 381 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm
 4th: 1.00" / 25 mm       -         -

   - Armour deck: 7.00" / 178 mm, Conning tower: 15.00" / 381 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 239,713 shp / 178,826 Kw = 32.00 kts
 Range 8,500nm at 18.00 kts
 Bunker at max displacement = 9,919 tons

Complement:
 2,192 - 2,851

Cost:
 £21.676 million / $86.702 million

Distribution of weights at normal displacement:
 Armament: 3,181 tons, 4.4 %
 Armour: 26,785 tons, 37.3 %
    - Belts: 5,151 tons, 7.2 %
    - Torpedo bulkhead: 3,552 tons, 4.9 %
    - Armament: 5,836 tons, 8.1 %
    - Armour Deck: 11,688 tons, 16.3 %
    - Conning Tower: 558 tons, 0.8 %
 Machinery: 7,567 tons, 10.5 %
 Hull, fittings & equipment: 26,172 tons, 36.5 %
 Fuel, ammunition & stores: 8,095 tons, 11.3 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   110,280 lbs / 50,022 Kg = 37.8 x 18.0 " / 457 mm shells or 19.0 torpedoes
 Stability (Unstable if below 1.00): 1.12
 Metacentric height 7.8 ft / 2.4 m
 Roll period: 17.5 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.68
 Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
 Hull has rise forward of midbreak
   and transom stern
 Block coefficient: 0.717
 Length to Beam Ratio: 7.89 : 1
 'Natural speed' for length: 34.43 kts
 Power going to wave formation at top speed: 54 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  35.00 ft / 10.67 m
    - Forecastle (20 %): 29.00 ft / 8.84 m
    - Mid (67 %):  29.00 ft / 8.84 m (21.00 ft / 6.40 m aft of break)
    - Quarterdeck (15 %): 21.00 ft / 6.40 m
    - Stern:  21.00 ft / 6.40 m
    - Average freeboard: 26.84 ft / 8.18 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 81.7 %
  - Above water (accommodation/working, high = better): 210.1 %
 Waterplane Area: 90,257 Square feet or 8,385 Square metres
 Displacement factor (Displacement / loading): 107 %
 Structure weight / hull surface area: 220 lbs/sq ft or 1,073 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 1.00
  - Longitudinal: 1.05
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent

Another 1921 battlecruiser

I thought that I would extend my battlecruiser series to 1921 with a ship with 8-16.5in BLR, 16-6in QF, 6-4.7in AA, and 32-2pdr AA guns. The armour basis is a substantial 14in with a 5in deck. The speed of 32 knots has ballooned the displacement, but I felt that the ship should do better than the 31 knots of the preceding design. The combination of strength and seakeeping through a greater freeboard, along with the 32 knot speed is behind the great displacement for the rather small dimensions, although it is primarily the speed. I thought that for a 1921 design, a transom stern was appropriate, and it reduces the power requirement, and helps to keep the displacement as low as it is. This is the Springsharp report:

GB/CB/1921, Great Britain Battlecruiser laid down 1921

Displacement:
    49,896 t light; 51,920 t standard; 55,700 t normal; 58,724 t full load

Dimensions: Length overall / water x beam x draught
    867.38 ft / 865.00 ft x 106.00 ft x 32.00 ft (normal load)
    264.38 m / 263.65 m x 32.31 m  x 9.75 m

Armament:
      8 - 16.50" / 419 mm guns (4x2 guns), 2,246.06lbs / 1,018.80kg shells, 1921 Model
      Breech loading guns in turrets (on barbettes)
      on centreline ends, evenly spread, 2 raised mounts - superfiring
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1921 Model
      Quick firing guns in turrets (on barbettes)
      on side, evenly spread, 4 raised mounts
      6 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1921 Model
      Anti-aircraft guns in deck mounts
      on side, evenly spread, 2 raised mounts
      32 - 1.57" / 40.0 mm guns (8x4 guns), 1.95lbs / 0.89kg shells, 1921 Model
      Anti-aircraft guns in deck mounts
      on side, evenly spread
    Weight of broadside 20,070 lbs / 9,104 kg
    Shells per gun, main battery: 80
    4 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    14.0" / 356 mm    570.00 ft / 173.74 m    8.00 ft / 2.44 m
    Ends:    Unarmoured
    Upper:    10.0" / 254 mm    570.00 ft / 173.74 m    8.00 ft / 2.44 m
      Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
        4.00" / 102 mm    570.00 ft / 173.74 m    31.00 ft / 9.45 m

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    14.0" / 356 mm    10.0" / 254 mm        14.0" / 356 mm
    2nd:    4.00" / 102 mm    4.00" / 102 mm        4.00" / 102 mm

   - Armour deck: 5.00" / 127 mm, Conning tower: 14.00" / 356 mm

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 4 shafts, 203,003 shp / 151,440 Kw = 32.00 kts
    Range 6,400nm at 18.00 kts
    Bunker at max displacement = 6,804 tons

Complement:
    1,812 - 2,356

Cost:
    £12.301 million / $49.203 million

Distribution of weights at normal displacement:
    Armament: 2,509 tons, 4.5 %
    Armour: 19,462 tons, 34.9 %
       - Belts: 4,666 tons, 8.4 %
       - Torpedo bulkhead: 2,615 tons, 4.7 %
       - Armament: 4,871 tons, 8.7 %
       - Armour Deck: 6,870 tons, 12.3 %
       - Conning Tower: 440 tons, 0.8 %
    Machinery: 6,990 tons, 12.6 %
    Hull, fittings & equipment: 20,935 tons, 37.6 %
    Fuel, ammunition & stores: 5,804 tons, 10.4 %
    Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      75,345 lbs / 34,176 Kg = 33.5 x 16.5 " / 419 mm shells or 11.3 torpedoes
    Stability (Unstable if below 1.00): 1.08
    Metacentric height 6.3 ft / 1.9 m
    Roll period: 17.7 seconds
    Steadiness    - As gun platform (Average = 50 %): 51 %
            - Recoil effect (Restricted arc if above 1.00): 0.77
    Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
    Hull has rise forward of midbreak
      and transom stern
    Block coefficient: 0.664
    Length to Beam Ratio: 8.16 : 1
    'Natural speed' for length: 33.54 kts
    Power going to wave formation at top speed: 54 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): 4.00 degrees
    Stern overhang: -2.00 ft / -0.61 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        34.00 ft / 10.36 m
       - Forecastle (20 %):    28.00 ft / 8.53 m
       - Mid (67 %):        28.00 ft / 8.53 m (20.00 ft / 6.10 m aft of break)
       - Quarterdeck (15 %):    20.00 ft / 6.10 m
       - Stern:        20.00 ft / 6.10 m
       - Average freeboard:    25.84 ft / 7.88 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 93.6 %
        - Above water (accommodation/working, high = better): 201.3 %
    Waterplane Area: 74,274 Square feet or 6,900 Square metres
    Displacement factor (Displacement / loading): 104 %
    Structure weight / hull surface area: 207 lbs/sq ft or 1,009 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.99
        - Longitudinal: 1.08
        - Overall: 1.00
    Hull space for machinery, storage, compartmentation is adequate
    Room for accommodation and workspaces is excellent

The well-protected GB/CB/1918 with 16in guns

Keeping with slightly reduced dimensions with a good armament and protection, this is a GB/CB/1918 design. The Standard Displacement is somewhat more than the Hood, but the other characteristics are so much better than the Hood as to make that size investment well worth the cost. The armament is a very 1918-ish 8-16in BLR, 16-5.5in QF, 6-4.7in AA, and 32-2pdr AA guns. I retained the 4-21in submerged TT, for better or worse. The armour basis is 13in with a 4in deck and 3in torpedo bulkhead. This is the Springsharp report:

GB/CB/1918, Great Britain Battlecruiser laid down 1918

Displacement:
 42,222 t light; 43,984 t standard; 47,400 t normal; 50,133 t full load

Dimensions: Length overall / water x beam x draught
 845.00 ft / 845.00 ft x 102.00 ft x 31.00 ft (normal load)
 257.56 m / 257.56 m x 31.09 m  x 9.45 m

Armament:
      8 - 16.00" / 406 mm guns (4x2 guns), 2,048.00lbs / 928.96kg shells, 1918 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      16 - 5.50" / 140 mm guns in single mounts, 83.19lbs / 37.73kg shells, 1918 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread, 8 raised mounts
      4 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1918 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread, 2 raised mounts
      32 - 1.57" / 40.0 mm guns (4x8 guns), 2.00lbs / 0.91kg shells, 1918 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread
 Weight of broadside 17,987 lbs / 8,159 kg
 Shells per gun, main battery: 80
 4 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 13.0" / 330 mm 570.00 ft / 173.74 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 10.0" / 254 mm 570.00 ft / 173.74 m 8.00 ft / 2.44 m
   Main Belt covers 104 % of normal length

   - Torpedo Bulkhead:
  3.00" / 76 mm 570.00 ft / 173.74 m 30.00 ft / 9.14 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 13.0" / 330 mm 9.00" / 229 mm  13.0" / 330 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 13.00" / 330 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 183,046 shp / 136,552 Kw = 31.00 kts
 Range 5,600nm at 18.00 kts
 Bunker at max displacement = 6,149 tons

Complement:
 1,606 - 2,088

Cost:
 £8.581 million / $34.325 million

Distribution of weights at normal displacement:
 Armament: 2,248 tons, 4.7 %
 Armour: 15,190 tons, 32.0 %
    - Belts: 4,433 tons, 9.4 %
    - Torpedo bulkhead: 1,898 tons, 4.0 %
    - Armament: 3,736 tons, 7.9 %
    - Armour Deck: 4,757 tons, 10.0 %
    - Conning Tower: 367 tons, 0.8 %
 Machinery: 6,603 tons, 13.9 %
 Hull, fittings & equipment: 18,180 tons, 38.4 %
 Fuel, ammunition & stores: 5,178 tons, 10.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   57,931 lbs / 26,277 Kg = 28.3 x 16.0 " / 406 mm shells or 8.1 torpedoes
 Stability (Unstable if below 1.00): 1.10
 Metacentric height 6.1 ft / 1.9 m
 Roll period: 17.3 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.75
 Seaboat quality  (Average = 1.00): 1.07

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.621
 Length to Beam Ratio: 8.28 : 1
 'Natural speed' for length: 29.07 kts
 Power going to wave formation at top speed: 52 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  32.00 ft / 9.75 m
    - Forecastle (20 %): 26.00 ft / 7.92 m
    - Mid (67 %):  26.00 ft / 7.92 m (18.00 ft / 5.49 m aft of break)
    - Quarterdeck (15 %): 18.00 ft / 5.49 m
    - Stern:  18.00 ft / 5.49 m
    - Average freeboard: 23.84 ft / 7.27 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 102.4 %
  - Above water (accommodation/working, high = better): 181.3 %
 Waterplane Area: 64,278 Square feet or 5,972 Square metres
 Displacement factor (Displacement / loading): 102 %
 Structure weight / hull surface area: 201 lbs/sq ft or 981 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 1.00
  - Longitudinal: 1.03
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent