My 2001 version of the GB/DD/1906 destroyer

When I just entered my GB/DD/1906 design into Springsharp, I used 18in torpedo tubes, as I couldn't stand to do what my friend Cliff had done, and give them 21in TT in 1906. I also increased the draft to 11ft and used a normal displacement of 965 tons. The freeboard is also a bit high, to achieve adequate seakeeping ability. The dimensions are 265ft x 26ft x 11ft. The armament is 2-4in QF guns and 2-18in TT. The speed is my standard 32 knots. This is the Springsharp report:

GB/DD/1906, Great Britain Destroyer laid down 1906 (Engine 1931)

Displacement:
 807 t light; 842 t standard; 965 t normal; 1,063 t full load

Dimensions: Length overall / water x beam x draught
 265.77 ft / 265.00 ft x 26.00 ft x 11.00 ft (normal load)
 81.01 m / 80.77 m x 7.92 m  x 3.35 m

Armament:
      2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1906 Model
   Quick firing guns in deck mounts with hoists
   on centreline ends, evenly spread
 Weight of broadside 64 lbs / 29 kg
 Shells per gun, main battery: 450
 2 - 18.0" / 457.2 mm above water torpedoes

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 28,759 shp / 21,454 Kw = 32.00 kts
 Range 3,750nm at 15.00 kts
 Bunker at max displacement = 221 tons

Complement:
 86 - 112

Cost:
 £0.108 million / $0.433 million

Distribution of weights at normal displacement:
 Armament: 8 tons, 0.8 %
 Machinery: 524 tons, 54.3 %
 Hull, fittings & equipment: 275 tons, 28.5 %
 Fuel, ammunition & stores: 158 tons, 16.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   245 lbs / 111 Kg = 7.6 x 4.0 " / 102 mm shells or 0.2 torpedoes
 Stability (Unstable if below 1.00): 1.40
 Metacentric height 1.2 ft / 0.4 m
 Roll period: 10.0 seconds
 Steadiness - As gun platform (Average = 50 %): 57 %
   - Recoil effect (Restricted arc if above 1.00): 0.23
 Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.446
 Length to Beam Ratio: 10.19 : 1
 'Natural speed' for length: 16.28 kts
 Power going to wave formation at top speed: 72 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  22.00 ft / 6.71 m
    - Forecastle (20 %): 20.00 ft / 6.10 m
    - Mid (32 %):  20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
    - Quarterdeck (15 %): 12.00 ft / 3.66 m
    - Stern:  12.00 ft / 3.66 m
    - Average freeboard: 14.72 ft / 4.49 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 182.8 %
  - Above water (accommodation/working, high = better): 111.5 %
 Waterplane Area: 4,379 Square feet or 407 Square metres
 Displacement factor (Displacement / loading): 54 %
 Structure weight / hull surface area: 24 lbs/sq ft or 117 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.41
  - Longitudinal: 4.34
  - Overall: 0.52
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is adequate

The GB/PGL/1906 from 2001

In August 2001, I recast my friend Cliff's design for the GB/PGL/1906 to be more in line with practice circa 1906. It still has 3-5in QF guns, but none are superfiring. Instead there is one mount forward and two aft, all on the centerline. Given the vagaries of Springsharp, the design is only viable due to the lightest weight machinery. The dimensions are 340ft x 35ft x 12ft, as I increased the draft to improve the composite strength and seakeeping. This is the Springsharp report:

GB/PGL/1906, Great Britain Large Fast Gunboat laid down 1906 (Engine 1950)

Displacement:
 1,327 t light; 1,373 t standard; 1,500 t normal; 1,602 t full load

Dimensions: Length overall / water x beam x draught
 341.08 ft / 340.00 ft x 35.00 ft x 12.00 ft (normal load)
 103.96 m / 103.63 m x 10.67 m  x 3.66 m

Armament:
      3 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1906 Model
   Quick firing guns in deck mounts with hoists
   on centreline, evenly spread
   Aft Main mounts separated by engine room
 Weight of broadside 188 lbs / 85 kg
 Shells per gun, main battery: 150

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 45,870 shp / 34,219 Kw = 35.00 kts
 Range 3,600nm at 15.00 kts
 Bunker at max displacement = 229 tons

Complement:
 119 - 156

Cost:
 £0.177 million / $0.709 million

Distribution of weights at normal displacement:
 Armament: 23 tons, 1.6 %
 Machinery: 794 tons, 52.9 %
 Hull, fittings & equipment: 510 tons, 34.0 %
 Fuel, ammunition & stores: 173 tons, 11.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   416 lbs / 189 Kg = 6.7 x 5.0 " / 127 mm shells or 0.3 torpedoes
 Stability (Unstable if below 1.00): 1.34
 Metacentric height 1.7 ft / 0.5 m
 Roll period: 11.1 seconds
 Steadiness - As gun platform (Average = 50 %): 63 %
   - Recoil effect (Restricted arc if above 1.00): 0.30
 Seaboat quality  (Average = 1.00): 1.27

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.368
 Length to Beam Ratio: 9.71 : 1
 'Natural speed' for length: 18.44 kts
 Power going to wave formation at top speed: 69 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  31.00 ft / 9.45 m
    - Forecastle (20 %): 28.00 ft / 8.53 m
    - Mid (33 %):  28.00 ft / 8.53 m (12.00 ft / 3.66 m aft of break)
    - Quarterdeck (15 %): 12.00 ft / 3.66 m
    - Stern:  12.00 ft / 3.66 m
    - Average freeboard: 17.52 ft / 5.34 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 182.8 %
  - Above water (accommodation/working, high = better): 175.9 %
 Waterplane Area: 7,230 Square feet or 672 Square metres
 Displacement factor (Displacement / loading): 63 %
 Structure weight / hull surface area: 31 lbs/sq ft or 153 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.42
  - Longitudinal: 3.47
  - Overall: 0.52
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily

The 2001 version of the GB/CS/1914 design

I recast the GB/CS/1914 design as a 6in-gunned super destroyer. When I drew the ship in August 2001, I gave it a raised forecastle, three funnels, and lightly protected conning tower. The armament is 4-6in QF guns. The dimensions are 405ft x 41ft x 13ft. The speed is my standard 32 knots. I used direct drive turbines, as 1914 is early for geared turbines, although they are possible that early. This is the Springsharp report:

GB/CS/1914, Great Britain Scout Cruiser laid down 1914

Displacement:
 2,850 t light; 2,980 t standard; 3,500 t normal; 3,916 t full load

Dimensions: Length overall / water x beam x draught
 405.91 ft / 405.00 ft x 41.00 ft x 13.00 ft (normal load)
 123.72 m / 123.44 m x 12.50 m  x 3.96 m

Armament:
      4 - 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, evenly spread
   Aft Main mounts separated by engine room
 Weight of broadside 432 lbs / 196 kg
 Shells per gun, main battery: 250

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 54,836 shp / 40,908 Kw = 32.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 936 tons

Complement:
 226 - 295

Cost:
 £0.530 million / $2.121 million

Distribution of weights at normal displacement:
 Armament: 54 tons, 1.5 %
 Machinery: 1,939 tons, 55.4 %
 Hull, fittings & equipment: 857 tons, 24.5 %
 Fuel, ammunition & stores: 650 tons, 18.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   932 lbs / 423 Kg = 8.6 x 6.0 " / 152 mm shells or 0.4 torpedoes
 Stability (Unstable if below 1.00): 1.67
 Metacentric height 3.1 ft / 0.9 m
 Roll period: 9.8 seconds
 Steadiness - As gun platform (Average = 50 %): 57 %
   - Recoil effect (Restricted arc if above 1.00): 0.27
 Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.567
 Length to Beam Ratio: 9.88 : 1
 'Natural speed' for length: 20.12 kts
 Power going to wave formation at top speed: 67 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: -1.00 ft / -0.30 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 (34 %):  22.00 ft / 6.71 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: 17.89 ft / 5.45 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 191.3 %
  - Above water (accommodation/working, high = better): 165.0 %
 Waterplane Area: 11,780 Square feet or 1,094 Square metres
 Displacement factor (Displacement / loading): 75 %
 Structure weight / hull surface area: 39 lbs/sq ft or 191 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.52
  - Longitudinal: 1.59
  - Overall: 0.58
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

The 2001 version of the GB/PG/1914 design

In August 2001 (0r so), I recast the design for the GB/PG/1914 to be more typical of what might have been done at that date, rather than the radical concept from 1971, which was flush-decked. The new version had a raised forecastle, with twin funnels and guns on the centerline. One was on the forecastle, two on the centerline, where torpedo tubes might have gone, and one aft. The dimensions, as modified to improve the Springsharp report were 260ft x 27ft x 11ft. I had to increase the draft to improve strength and seakeeping ability. This is the Springsharp report:

GB/PG/1914, Great Britain Fast Gunboat laid down 1914 (Engine 1937)

Displacement:
 855 t light; 893 t standard; 1,010 t normal; 1,103 t full load

Dimensions: Length overall / water x beam x draught
 260.80 ft / 260.00 ft x 27.00 ft x 11.00 ft (normal load)
 79.49 m / 79.25 m x 8.23 m  x 3.35 m

Armament:
      4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1914 Model
   Quick firing guns in deck mounts with hoists
   on centreline, evenly spread
   Aft Main mounts separated by engine room
 Weight of broadside 128 lbs / 58 kg
 Shells per gun, main battery: 250

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 30,584 shp / 22,816 Kw = 32.00 kts
 Range 3,650nm at 15.00 kts
 Bunker at max displacement = 210 tons

Complement:
 89 - 116

Cost:
 £0.149 million / $0.598 million

Distribution of weights at normal displacement:
 Armament: 16 tons, 1.6 %
 Machinery: 529 tons, 52.4 %
 Hull, fittings & equipment: 310 tons, 30.7 %
 Fuel, ammunition & stores: 155 tons, 15.3 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   262 lbs / 119 Kg = 8.2 x 4.0 " / 102 mm shells or 0.2 torpedoes
 Stability (Unstable if below 1.00): 1.30
 Metacentric height 1.1 ft / 0.3 m
 Roll period: 10.7 seconds
 Steadiness - As gun platform (Average = 50 %): 56 %
   - Recoil effect (Restricted arc if above 1.00): 0.49
 Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.458
 Length to Beam Ratio: 9.63 : 1
 'Natural speed' for length: 16.12 kts
 Power going to wave formation at top speed: 74 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  23.00 ft / 7.01 m
    - Forecastle (20 %): 21.00 ft / 6.40 m
    - Mid (35 %):  21.00 ft / 6.40 m (13.00 ft / 3.96 m aft of break)
    - Quarterdeck (15 %): 13.00 ft / 3.96 m
    - Stern:  13.00 ft / 3.96 m
    - Average freeboard: 15.96 ft / 4.86 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 182.0 %
  - Above water (accommodation/working, high = better): 143.2 %
 Waterplane Area: 4,507 Square feet or 419 Square metres
 Displacement factor (Displacement / loading): 55 %
 Structure weight / hull surface area: 25 lbs/sq ft or 124 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.40
  - Longitudinal: 5.64
  - Overall: 0.52
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

My 2001 version of the GB/DT/1914

When I was determined to draw ships that looked like they belonged to the period and navy in 2001, I recast the GB/DT/1914 as a ship with two funnels and a forecastle, rather than a raked flush deck and single funnel, as the concept had been from 1971. To make this work in Springsharp, very lightweight machinery was required. The single gun is on the forecastle with the three triple torpedo tube mountings are aft. I had to add freeboard to make the design work, as well as use a normal displacement that would give a 900 ton (about) standard displacement. This is the resulting Springsharp report:

GB/DT/1914, Great Britain Torpedo Boat laid down 1914 (Engine 1941)

Displacement:
 894 t light; 923 t standard; 1,040 t normal; 1,134 t full load

Dimensions: Length overall / water x beam x draught
 265.84 ft / 265.00 ft x 28.00 ft x 9.00 ft (normal load)
 81.03 m / 80.77 m x 8.53 m  x 2.74 m

Armament:
      1 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1914 Model
   Quick firing gun in a deck mount with hoist
   on centreline forward
 Weight of broadside 32 lbs / 15 kg
 Shells per gun, main battery: 450
 9 - 21.0" / 533.4 mm above water torpedoes

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 32,823 shp / 24,486 Kw = 32.00 kts
 Range 3,650nm at 15.00 kts
 Bunker at max displacement = 210 tons

Complement:
 91 - 119

Cost:
 £0.146 million / $0.583 million

Distribution of weights at normal displacement:
 Armament: 4 tons, 0.4 %
 Machinery: 570 tons, 54.8 %
 Hull, fittings & equipment: 320 tons, 30.8 %
 Fuel, ammunition & stores: 146 tons, 14.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   294 lbs / 133 Kg = 9.2 x 4.0 " / 102 mm shells or 0.2 torpedoes
 Stability (Unstable if below 1.00): 1.16
 Metacentric height 1.0 ft / 0.3 m
 Roll period: 11.9 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.12
 Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
 Hull has raised forecastle, rise forward of midbreak
 Block coefficient: 0.545
 Length to Beam Ratio: 9.46 : 1
 'Natural speed' for length: 16.28 kts
 Power going to wave formation at top speed: 76 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  24.00 ft / 7.32 m
    - Forecastle (20 %): 22.00 ft / 6.71 m (21.00 ft / 6.40 m aft of break)
    - Mid (32 %):  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: 16.66 ft / 5.08 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 180.5 %
  - Above water (accommodation/working, high = better): 27.3 %
 Waterplane Area: 5,155 Square feet or 479 Square metres
 Displacement factor (Displacement / loading): 59 %
 Structure weight / hull surface area: 25 lbs/sq ft or 121 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.42
  - Longitudinal: 5.53
  - Overall: 0.54
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is extremely poor

Here is my scan of my 2001 drawing of the GB/FG/1913 design

I thought I would try out my new "all-in-one" box that will scan. I thought that the GB/FG/1913 design would be a good place to start:

This drawing was probably from late August 2001.

My 2001 version of the GB/FG/1913 design

In the original pencil sketch from 1971, we had allowed the GB/FG/1913 to have superfiring guns, but when I did a new drawing in August-September 2001, I was not prepared to allow them in a 1913 destroyer-type vessel. The dimensions for the ship, circa 2001, were 315ft x 30ft x 11ft. I let the normal displacement be 1,350 tons. The armament is 5-4in QF guns and 2-21in TT in a twin centerline mount. There are three funnels with a 4in gun at the rear end of the forecastle and between the forefunnel and the second funnel. The ship is very a WWI British-looking destroyer type. It depends on lightweight machinery to be viable. This is the Springsharp report:

GB/FG/1913, Great Britain Frigate-Gunboat laid down 1913 (Engine 1931)

Displacement:
 1,107 t light; 1,165 t standard; 1,350 t normal; 1,498 t full load

Dimensions: Length overall / water x beam x draught
 315.77 ft / 315.00 ft x 30.00 ft x 11.00 ft (normal load)
 96.25 m / 96.01 m x 9.14 m  x 3.35 m

Armament:
      5 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1913 Model
   Quick firing guns in deck mounts with hoists
   on centreline ends, majority forward
 Weight of broadside 160 lbs / 73 kg
 Shells per gun, main battery: 350
 2 - 21.0" / 533.4 mm above water torpedoes

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 31,980 shp / 23,857 Kw = 32.00 kts
 Range 4,750nm at 15.00 kts
 Bunker at max displacement = 334 tons

Complement:
 110 - 144

Cost:
 £0.167 million / $0.670 million

Distribution of weights at normal displacement:
 Armament: 20 tons, 1.5 %
 Machinery: 699 tons, 51.8 %
 Hull, fittings & equipment: 387 tons, 28.7 %
 Fuel, ammunition & stores: 243 tons, 18.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   382 lbs / 173 Kg = 11.9 x 4.0 " / 102 mm shells or 0.3 torpedoes
 Stability (Unstable if below 1.00): 1.45
 Metacentric height 1.6 ft / 0.5 m
 Roll period: 10.1 seconds
 Steadiness - As gun platform (Average = 50 %): 59 %
   - Recoil effect (Restricted arc if above 1.00): 0.34
 Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.455
 Length to Beam Ratio: 10.50 : 1
 'Natural speed' for length: 17.75 kts
 Power going to wave formation at top speed: 69 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  22.00 ft / 6.71 m
    - Forecastle (20 %): 20.00 ft / 6.10 m
    - Mid (36 %):  20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
    - Quarterdeck (15 %): 12.00 ft / 3.66 m
    - Stern:  12.00 ft / 3.66 m
    - Average freeboard: 15.04 ft / 4.58 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 180.0 %
  - Above water (accommodation/working, high = better): 125.0 %
 Waterplane Area: 6,050 Square feet or 562 Square metres
 Displacement factor (Displacement / loading): 65 %
 Structure weight / hull surface area: 28 lbs/sq ft or 139 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.46
  - Longitudinal: 2.64
  - Overall: 0.55
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

The GB/BB/1907 battleship drawing from August 31, 2001

The GB/BB/1907 battleship drawing dating from August 31, 2001 is a moderately good view of my friend Cliff's concept for the class. When I entered the design into Springsharp, there was room for growth, so I used an armor basis of 14in, instead of 13.7in. The machinery date has to be set to 1909 to work, but otherwise, there is no stretching. The dimensions are 680ft x 87ft x 30ft, with a normal displacement of 27,500 tons. The armament is the 6-12in/50 BLR and 8-6in/50 QF guns, all in twin turrets. There was room in the Springsharp design for a maximum speed of 25 knots. This is the Springsharp report:

GB/BB/1907, Great Britain Battleship laid down 1907 (Engine 1909)

Displacement:
 24,084 t light; 24,910 t standard; 27,500 t normal; 29,572 t full load

Dimensions: Length overall / water x beam x draught
 680.00 ft / 680.00 ft x 87.00 ft x 30.00 ft (normal load)
 207.26 m / 207.26 m x 26.52 m  x 9.14 m

Armament:
      6 - 12.00" / 305 mm guns (3x2 guns), 864.00lbs / 391.90kg shells, 1907 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1907 Model
   Quick firing guns in turrets (on barbettes)
   on side, all aft
 Weight of broadside 6,048 lbs / 2,743 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 14.0" / 356 mm 385.00 ft / 117.35 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 87 % of normal length

   - Torpedo Bulkhead:
  3.00" / 76 mm 385.00 ft / 117.35 m 28.00 ft / 8.53 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 14.0" / 356 mm 11.0" / 279 mm  14.0" / 356 mm
 2nd: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 14.00" / 356 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 59,345 shp / 44,271 Kw = 25.00 kts
 Range 6,300nm at 15.00 kts
 Bunker at max displacement = 4,663 tons

Complement:
 1,067 - 1,388

Cost:
 £1.856 million / $7.423 million

Distribution of weights at normal displacement:
 Armament: 756 tons, 2.7 %
 Armour: 10,995 tons, 40.0 %
    - Belts: 4,019 tons, 14.6 %
    - Torpedo bulkhead: 1,197 tons, 4.4 %
    - Armament: 2,471 tons, 9.0 %
    - Armour Deck: 3,033 tons, 11.0 %
    - Conning Tower: 275 tons, 1.0 %
 Machinery: 2,697 tons, 9.8 %
 Hull, fittings & equipment: 9,636 tons, 35.0 %
 Fuel, ammunition & stores: 3,416 tons, 12.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   53,543 lbs / 24,286 Kg = 62.0 x 12.0 " / 305 mm shells or 9.9 torpedoes
 Stability (Unstable if below 1.00): 1.07
 Metacentric height 4.6 ft / 1.4 m
 Roll period: 17.0 seconds
 Steadiness - As gun platform (Average = 50 %): 86 %
   - Recoil effect (Restricted arc if above 1.00): 0.60
 Seaboat quality  (Average = 1.00): 1.73

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.542
 Length to Beam Ratio: 7.82 : 1
 'Natural speed' for length: 26.08 kts
 Power going to wave formation at top speed: 45 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  29.00 ft / 8.84 m
    - Forecastle (20 %): 26.00 ft / 7.92 m
    - Mid (65 %):  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: 23.44 ft / 7.14 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 69.1 %
  - Above water (accommodation/working, high = better): 172.2 %
 Waterplane Area: 40,991 Square feet or 3,808 Square metres
 Displacement factor (Displacement / loading): 123 %
 Structure weight / hull surface area: 155 lbs/sq ft or 755 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.55
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather

The GB/CB/1905 from August 31, 2001

This is a much better drawing than the GB/CB/1907. I need to scan the drawings and post them, for posterity. The GB/CB/1905 drawing was good enough that I had made it into a wargame piece back 2001. When I lost my hard disk in the fall of 2002, the scan was lost. Anyway, for whatever reason, the GB/CB/1905 design is working extremely well in Springsharp. It would be tempting to increase the belt armor, but I refrained, to retain the elements of the original design. I did increase turret, barbette, and conning tower to use up growth capacity in the design and to raise the center of gravity, to increase the roll period to above 14 seconds, which is lower than I like. This design is 770ft x 85ft x 27ft, with a normal displacement of 26,500 tons. The armament is the usual 4-12in/45 BLR and 9-6in/50 QF guns. The speed is 33 knots maximum with a range of 7,500 miles at 15 knots. This is the Springsharp report:

GB/CB/1905, Great Britain Battlecruiser laid down 1905 (Engine 1909)

Displacement:
 22,731 t light; 23,465 t standard; 26,500 t normal; 28,928 t full load

Dimensions: Length overall / water x beam x draught
 770.00 ft / 770.00 ft x 85.00 ft x 27.00 ft (normal load)
 234.70 m / 234.70 m x 25.91 m  x 8.23 m

Armament:
      4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1905 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1905 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread
      1 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1905 Model
   Quick firing gun in a deck mount with hoist
   on centreline aft
 Weight of broadside 4,428 lbs / 2,009 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 495.00 ft / 150.88 m 9.00 ft / 2.74 m
 Ends: Unarmoured
 Upper: 4.00" / 102 mm 425.00 ft / 129.54 m 8.00 ft / 2.44 m
   Main Belt covers 99 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.50" / 38 mm 495.00 ft / 150.88 m 26.00 ft / 7.92 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 10.0" / 254 mm 6.00" / 152 mm  10.0" / 254 mm
 2nd: 3.00" / 76 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 10.00" / 254 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 160,984 shp / 120,094 Kw = 33.00 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 5,463 tons

Complement:
 1,038 - 1,350

Cost:
 £2.285 million / $9.140 million

Distribution of weights at normal displacement:
 Armament: 554 tons, 2.1 %
 Armour: 4,869 tons, 18.4 %
    - Belts: 1,339 tons, 5.1 %
    - Torpedo bulkhead: 714 tons, 2.7 %
    - Armament: 973 tons, 3.7 %
    - Armour Deck: 1,651 tons, 6.2 %
    - Conning Tower: 191 tons, 0.7 %
 Machinery: 7,317 tons, 27.6 %
 Hull, fittings & equipment: 9,992 tons, 37.7 %
 Fuel, ammunition & stores: 3,769 tons, 14.2 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   30,876 lbs / 14,005 Kg = 35.7 x 12.0 " / 305 mm shells or 3.5 torpedoes
 Stability (Unstable if below 1.00): 1.29
 Metacentric height 6.2 ft / 1.9 m
 Roll period: 14.4 seconds
 Steadiness - As gun platform (Average = 50 %): 66 %
   - Recoil effect (Restricted arc if above 1.00): 0.35
 Seaboat quality  (Average = 1.00): 1.32

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.525
 Length to Beam Ratio: 9.06 : 1
 'Natural speed' for length: 27.75 kts
 Power going to wave formation at top speed: 53 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  31.00 ft / 9.45 m
    - Forecastle (20 %): 28.00 ft / 8.53 m
    - Mid (73 %):  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: 26.08 ft / 7.95 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 137.7 %
  - Above water (accommodation/working, high = better): 217.2 %
 Waterplane Area: 44,617 Square feet or 4,145 Square metres
 Displacement factor (Displacement / loading): 111 %
 Structure weight / hull surface area: 145 lbs/sq ft or 707 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.31
  - 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

I have this bad drawing of a good design: GB/CB/1907

I drew a picture of the GB/CB/1907 design on August 31, 2001. It was a particularly unfortunate picture, in that it was drawn on a day "I couldn't draw". Still, the basic design works quite well in Springsharp. This version had more beam and armor than the GB/CB/1905 version. The armor belt is 6in, while the barbettes and turrets are 9in, maximum. The maximum speed is still 33 knots. It really justifies my friend Cliff's concept for these ships. This version only moderately depends on lightweight machinery. I did extend the belt to take advantage of the growth potential in the design. This is the Springsharp report:

GB/CB/1907, Great Britain Battlecruiser laid down 1907 (Engine 1909)

Displacement:
 23,642 t light; 24,396 t standard; 27,500 t normal; 29,984 t full load

Dimensions: Length overall / water x beam x draught
 770.00 ft / 770.00 ft x 87.00 ft x 27.00 ft (normal load)
 234.70 m / 234.70 m x 26.52 m  x 8.23 m

Armament:
      4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1907 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1907 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread
      1 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1907 Model
   Quick firing gun in a deck mount with hoist
   on centreline aft
 Weight of broadside 4,428 lbs / 2,009 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 480.00 ft / 146.30 m 9.00 ft / 2.74 m
 Ends: Unarmoured
 Upper: 6.00" / 152 mm 420.00 ft / 128.02 m 8.00 ft / 2.44 m
   Main Belt covers 96 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.50" / 38 mm 480.00 ft / 146.30 m 26.00 ft / 7.92 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 9.00" / 229 mm 5.00" / 127 mm  9.00" / 229 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm
 3rd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 9.00" / 229 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 165,828 shp / 123,708 Kw = 33.00 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 5,588 tons

Complement:
 1,067 - 1,388

Cost:
 £2.348 million / $9.391 million

Distribution of weights at normal displacement:
 Armament: 554 tons, 2.0 %
 Armour: 5,420 tons, 19.7 %
    - Belts: 1,977 tons, 7.2 %
    - Torpedo bulkhead: 693 tons, 2.5 %
    - Armament: 873 tons, 3.2 %
    - Armour Deck: 1,701 tons, 6.2 %
    - Conning Tower: 177 tons, 0.6 %
 Machinery: 7,538 tons, 27.4 %
 Hull, fittings & equipment: 10,130 tons, 36.8 %
 Fuel, ammunition & stores: 3,858 tons, 14.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   32,851 lbs / 14,901 Kg = 38.0 x 12.0 " / 305 mm shells or 3.7 torpedoes
 Stability (Unstable if below 1.00): 1.31
 Metacentric height 6.6 ft / 2.0 m
 Roll period: 14.2 seconds
 Steadiness - As gun platform (Average = 50 %): 65 %
   - Recoil effect (Restricted arc if above 1.00): 0.31
 Seaboat quality  (Average = 1.00): 1.31

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.532
 Length to Beam Ratio: 8.85 : 1
 'Natural speed' for length: 27.75 kts
 Power going to wave formation at top speed: 54 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  31.00 ft / 9.45 m
    - Forecastle (20 %): 28.00 ft / 8.53 m
    - Mid (72 %):  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: 26.00 ft / 7.92 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 135.2 %
  - Above water (accommodation/working, high = better): 216.7 %
 Waterplane Area: 45,977 Square feet or 4,271 Square metres
 Displacement factor (Displacement / loading): 110 %
 Structure weight / hull surface area: 145 lbs/sq ft or 706 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.30
  - 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/BB/1906 battleship drawing from August 2001

I have a pencil drawing from August 2001 for the GB/BB/1906 battleship. My friend Cliff had conceived this design as a fast battleship that sacrificed armament to get speed and protection. I have kept the citadel armor the same length as the drawing, even though it is short, according to Springsharp. The nominal displacement intended was 25,000 tons, but that was too small for a normal displacement for this design. I had to increase that to 26,500 tons, which produced a standard displacement of only 23,811 tons. This is the Springsharp report:

GB/BB/1906, Great Britain Battleship laid down 1906

Displacement:
 23,005 t light; 23,811 t standard; 26,500 t normal; 28,652 t full load

Dimensions: Length overall / water x beam x draught
 680.00 ft / 680.00 ft x 87.70 ft x 27.00 ft (normal load)
 207.26 m / 207.26 m x 26.73 m  x 8.23 m

Armament:
     6 - 12.00" / 305 mm guns (3x2 guns), 864.00lbs / 391.90kg shells, 1906 Model
   Breech loading guns in turrets (on barbettes)
   on centreline, evenly spread, 1 raised mount
   Aft Main mounts separated by engine room
     8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1906 Model
   Quick firing guns in turrets (on barbettes)
   on side, all amidships
 Weight of broadside 6,048 lbs / 2,743 kg
 Shells per gun, main battery: 80

Armour:
  - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 13.7" / 348 mm 370.00 ft / 112.78 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 84 % of normal length

  - Torpedo Bulkhead:
  2.00" / 51 mm 370.00 ft / 112.78 m 26.00 ft / 7.92 m

  - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 13.7" / 348 mm 9.00" / 229 mm  13.7" / 348 mm
 2nd: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm

  - Armour deck: 3.00" / 76 mm, Conning tower: 13.70" / 348 mm

Machinery:
 Oil fired boilers, steam turbines,
 Direct drive, 4 shafts, 50,515 shp / 37,684 Kw = 24.00 kts
 Range 5,600nm at 15.00 kts
 Bunker at max displacement = 4,841 tons

Complement:
 1,038 - 1,350

Cost:
 £1.899 million / $7.598 million

Distribution of weights at normal displacement:
 Armament: 756 tons, 2.9 %
 Armour: 9,371 tons, 35.4 %
    - Belts: 3,597 tons, 13.6 %
    - Torpedo bulkhead: 712 tons, 2.7 %
    - Armament: 2,433 tons, 9.2 %
    - Armour Deck: 2,367 tons, 8.9 %
    - Conning Tower: 262 tons, 1.0 %
 Machinery: 3,280 tons, 12.4 %
 Hull, fittings & equipment: 9,598 tons, 36.2 %
 Fuel, ammunition & stores: 3,495 tons, 13.2 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   46,879 lbs / 21,264 Kg = 54.3 x 12.0 " / 305 mm shells or 7.4 torpedoes
 Stability (Unstable if below 1.00): 1.12
 Metacentric height 5.1 ft / 1.5 m
 Roll period: 16.4 seconds
 Steadiness - As gun platform (Average = 50 %): 87 %
   - Recoil effect (Restricted arc if above 1.00): 0.57
 Seaboat quality  (Average = 1.00): 1.73

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.576
 Length to Beam Ratio: 7.75 : 1
 'Natural speed' for length: 26.08 kts
 Power going to wave formation at top speed: 43 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  29.00 ft / 8.84 m
    - Forecastle (20 %): 26.00 ft / 7.92 m
    - Mid (65 %):  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: 23.44 ft / 7.14 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 80.5 %
  - Above water (accommodation/working, high = better): 184.2 %
 Waterplane Area: 42,648 Square feet or 3,962 Square metres
 Displacement factor (Displacement / loading): 121 %
 Structure weight / hull surface area: 153 lbs/sq ft or 749 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.40
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather

The August 2001 version of the GB/BB/1909 design

The GB/BB/1909 design has 9-12in/50 BLR and 8-6in QF guns. I assumed that the armor basis was 14in, and started with a 23-knot speed, although I increased the speed to 24 knots, since there was room to grow. The dimensions are 650ft x 100ft x 28ft, with a normal displacement of 29,000 tons. Since Springsharp allowed for growth in the design, I increased the range to 6,000 nm, as well as increasing the speed to 24 knots. I left the armored citadel lenght the same as the drawing, even though Springsharp complains that it is too short. This is the Srpingsharp report:

GB/BB/1909, Great Britain Battleship laid down 1909

Displacement:
 25,453 t light; 26,424 t standard; 29,000 t normal; 31,061 t full load

Dimensions: Length overall / water x beam x draught
 650.00 ft / 650.00 ft x 100.00 ft x 28.00 ft (normal load)
 198.12 m / 198.12 m x 30.48 m  x 8.53 m

Armament:
      9 - 12.00" / 305 mm guns (3x3 guns), 864.00lbs / 391.90kg shells, 1909 Model
   Breech loading guns in turrets (on barbettes)
   on centreline, evenly spread, 1 raised mount
   Aft Main mounts separated by engine room
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1909 Model
   Quick firing guns in casemate mounts 
   on side, all amidships, 2 raised mounts - superfiring
 Weight of broadside 8,640 lbs / 3,919 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 14.0" / 356 mm 360.00 ft / 109.73 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 85 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 360.00 ft / 109.73 m 27.00 ft / 8.23 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: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm

   - Armour deck: 3.50" / 89 mm, Conning tower: 14.00" / 356 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 54,707 shp / 40,811 Kw = 24.00 kts
 Range 6,000nm at 15.00 kts
 Bunker at max displacement = 4,637 tons

Complement:
 1,110 - 1,444

Cost:
 £2.146 million / $8.585 million

Distribution of weights at normal displacement:
 Armament: 1,080 tons, 3.7 %
 Armour: 10,678 tons, 36.8 %
    - Belts: 3,875 tons, 13.4 %
    - Torpedo bulkhead: 719 tons, 2.5 %
    - Armament: 2,840 tons, 9.8 %
    - Armour Deck: 2,959 tons, 10.2 %
    - Conning Tower: 285 tons, 1.0 %
 Machinery: 2,487 tons, 8.6 %
 Hull, fittings & equipment: 11,209 tons, 38.7 %
 Fuel, ammunition & stores: 3,547 tons, 12.2 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   58,617 lbs / 26,588 Kg = 67.8 x 12.0 " / 305 mm shells or 10.3 torpedoes
 Stability (Unstable if below 1.00): 1.12
 Metacentric height 6.2 ft / 1.9 m
 Roll period: 16.8 seconds
 Steadiness - As gun platform (Average = 50 %): 91 %
   - Recoil effect (Restricted arc if above 1.00): 0.59
 Seaboat quality  (Average = 1.00): 1.82

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.558
 Length to Beam Ratio: 6.50 : 1
 'Natural speed' for length: 25.50 kts
 Power going to wave formation at top speed: 46 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  31.00 ft / 9.45 m
    - Forecastle (20 %): 28.00 ft / 8.53 m
    - Mid (66 %):  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: 25.52 ft / 7.78 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 70.4 %
  - Above water (accommodation/working, high = better): 201.2 %
 Waterplane Area: 45,691 Square feet or 4,245 Square metres
 Displacement factor (Displacement / loading): 119 %
 Structure weight / hull surface area: 172 lbs/sq ft or 839 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.93
  - Longitudinal: 1.85
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather

The GB/BB/1914 design drawn in August 2001

I really need to scan some of these drawings, as they are pretty interesting (to me). I just ran the GB/BB/1914 design through Springsharp. I used rather modest armor estimates and a moderate speed (23 knots). The ship is 800ft x 120ft x 30ft, and the originally intended displacement was only 45,000 tons. That is way too low for adequate strength. I had to greatly increase that to be viable. This is the Springsharp report:

GB/BB/1914, Great Britain Battleship laid down 1914

Displacement:
 50,639 t light; 53,002 t standard; 56,500 t normal; 59,299 t full load

Dimensions: Length overall / water x beam x draught
 800.00 ft / 800.00 ft x 120.00 ft x 30.00 ft (normal load)
 243.84 m / 243.84 m x 36.58 m  x 9.14 m

Armament:
      9 - 18.00" / 457 mm guns (3x3 guns), 2,916.00lbs / 1,322.68kg shells, 1914 Model
   Breech loading guns in turrets (on barbettes)
   on centreline, evenly spread, 1 raised mount
   Aft Main mounts separated by engine room
      20 - 5.00" / 127 mm guns (10x2 guns), 62.50lbs / 28.35kg shells, 1914 Model
   Quick firing guns in turrets (on barbettes)
   on side, all forward, 6 raised mounts - superfiring
 Weight of broadside 27,494 lbs / 12,471 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 16.0" / 406 mm 430.00 ft / 131.06 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 83 % of normal length

   - Torpedo Bulkhead:
  3.00" / 76 mm 430.00 ft / 131.06 m 29.00 ft / 8.84 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 18.0" / 457 mm 11.0" / 279 mm  18.0" / 457 mm
 2nd: 5.00" / 127 mm 5.00" / 127 mm  5.00" / 127 mm

   - Armour deck: 5.00" / 127 mm, Conning tower: 18.00" / 457 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 69,918 shp / 52,159 Kw = 23.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 6,297 tons

Complement:
 1,832 - 2,382

Cost:
 £6.410 million / $25.639 million

Distribution of weights at normal displacement:
 Armament: 3,437 tons, 6.1 %
 Armour: 20,809 tons, 36.8 %
    - Belts: 5,348 tons, 9.5 %
    - Torpedo bulkhead: 1,384 tons, 2.4 %
    - Armament: 6,473 tons, 11.5 %
    - Armour Deck: 7,033 tons, 12.4 %
    - Conning Tower: 571 tons, 1.0 %
 Machinery: 2,693 tons, 4.8 %
 Hull, fittings & equipment: 23,700 tons, 41.9 %
 Fuel, ammunition & stores: 5,861 tons, 10.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   96,099 lbs / 43,590 Kg = 33.0 x 18.0 " / 457 mm shells or 16.6 torpedoes
 Stability (Unstable if below 1.00): 1.10
 Metacentric height 7.8 ft / 2.4 m
 Roll period: 18.0 seconds
 Steadiness - As gun platform (Average = 50 %): 73 %
   - Recoil effect (Restricted arc if above 1.00): 0.80
 Seaboat quality  (Average = 1.00): 1.45

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.687
 Length to Beam Ratio: 6.67 : 1
 'Natural speed' for length: 28.28 kts
 Power going to wave formation at top speed: 41 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -1.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  32.00 ft / 9.75 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: 25.68 ft / 7.83 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 73.3 %
  - Above water (accommodation/working, high = better): 203.8 %
 Waterplane Area: 76,030 Square feet or 7,063 Square metres
 Displacement factor (Displacement / loading): 105 %
 Structure weight / hull surface area: 237 lbs/sq ft or 1,158 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.34
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Good seaboat, rides out heavy weather easily

The GB/BB/1915, evidently from August 2001

The GB/BB/1912 design for my friend Cliff, did not work very well in SpringSharp. I had to lower freeboard and greatly increase the displacent (to 36,500 tons, normal). The original intent was for something like 32,500 tons. I confirmed that the secondary armament was intended to be 14-6in QF guns. I am reasonably certain that Cliff wanted a 14in armor basis. This is the SpringSharp report:

GB/BB/1912, Great Britain Battleship laid down 1912

Displacement:
 32,569 t light; 34,052 t standard; 36,500 t normal; 38,458 t full load

Dimensions: Length overall / water x beam x draught
 700.00 ft / 700.00 ft x 105.00 ft x 29.00 ft (normal load)
 213.36 m / 213.36 m x 32.00 m  x 8.84 m

Armament:
      9 - 15.00" / 381 mm guns (3x3 guns), 1,687.50lbs / 765.44kg shells, 1912 Model
   Breech loading guns in turrets (on barbettes)
   on centreline, evenly spread, 1 raised mount
   Aft Main mounts separated by engine room
      14 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1912 Model
   Quick firing guns in casemate mounts 
   on side, all forward, 4 raised mounts - superfiring
 Weight of broadside 16,700 lbs / 7,575 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 14.0" / 356 mm 400.00 ft / 121.92 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 88 % of normal length

   - Torpedo Bulkhead:
  3.00" / 76 mm 400.00 ft / 121.92 m 27.00 ft / 8.23 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: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm

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

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 45,095 shp / 33,641 Kw = 22.00 kts
 Range 5,600nm at 15.00 kts
 Bunker at max displacement = 4,406 tons

Complement:
 1,319 - 1,716

Cost:
 £3.145 million / $12.580 million

Distribution of weights at normal displacement:
 Armament: 2,087 tons, 5.7 %
 Armour: 14,205 tons, 38.9 %
    - Belts: 4,270 tons, 11.7 %
    - Torpedo bulkhead: 1,199 tons, 3.3 %
    - Armament: 3,434 tons, 9.4 %
    - Armour Deck: 4,969 tons, 13.6 %
    - Conning Tower: 332 tons, 0.9 %
 Machinery: 1,798 tons, 4.9 %
 Hull, fittings & equipment: 14,479 tons, 39.7 %
 Fuel, ammunition & stores: 3,931 tons, 10.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   63,099 lbs / 28,621 Kg = 37.4 x 15.0 " / 381 mm shells or 11.6 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 6.8 ft / 2.1 m
 Roll period: 16.9 seconds
 Steadiness - As gun platform (Average = 50 %): 75 %
   - Recoil effect (Restricted arc if above 1.00): 0.67
 Seaboat quality  (Average = 1.00): 1.51

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.599
 Length to Beam Ratio: 6.67 : 1
 'Natural speed' for length: 26.46 kts
 Power going to wave formation at top speed: 40 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -1.00 degrees
 Stern overhang: 0.00 ft / 0.00 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 (59 %):  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: 21.96 ft / 6.69 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 72.9 %
  - Above water (accommodation/working, high = better): 169.1 %
 Waterplane Area: 53,724 Square feet or 4,991 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 199 lbs/sq ft or 971 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.45
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Roll period for large warships

This is based on a conversation I had yesterday with a prominent author and researcher on naval history topics. We had speculated over the last week or so about whether large metacentric heights were appropriate for large warships. The answer is that there are reasonable limits on metacentric height, due to its effect on roll period. The goal is have a roll period of less than 15 seconds for a large warship. Remember that the formula for roll period is

T=roll period in seconds
B=beam in feet
GM= metacentric height in feet
K= a constant that can vary in the range of 0.38 and 0.55

T=(B x K)/sqrt(GM)

It seems that SpringSharp is using a K of 0.42. Prof. Royce, at the Webb Institute told my friend that we should use a K of 0.4, unless there is some specific reason to use something else. If there is a great deal of mass at the sides of the ship, the K would be greater. If the mass was concentrated on the centerline, then the K could be slightly less than 0.4. It turns out that the Bismarck, Tirpitz, and H-Class design all had very large GM values, perhaps above 10.0. My friend speculated that they might have been snappy rollers.

The GB/BB/1915 "BBX" design based on my August 2001 drawing

I have this drawing of the GB/BB/1915, my friend Cliff's "BBX" design, that I just ran through SpringSharp. This drawing attributes the 20in guns to the design. I used the dimensions from the drawing, estimated armor, and adjusted displacement and speed to work in SpringSharp. This is the report:

GB/BB/1915 BBX, Great Britain Battleship laid down 1915

Displacement:
 67,209 t light; 70,375 t standard; 74,300 t normal; 77,440 t full load

Dimensions: Length overall / water x beam x draught
 852.08 ft / 850.00 ft x 135.00 ft x 36.00 ft (normal load)
 259.71 m / 259.08 m x 41.15 m  x 10.97 m

Armament:
      9 - 20.00" / 508 mm guns (3x3 guns), 4,000.00lbs / 1,814.37kg shells, 1915 Model
   Breech loading guns in turrets (on barbettes)
   on centreline, evenly spread, 1 raised mount
   Aft Main mounts separated by engine room
      24 - 5.00" / 127 mm guns (12x2 guns), 62.50lbs / 28.35kg shells, 1915 Model
   Quick firing guns in turrets (on barbettes)
   on side, all forward, 4 raised mounts - superfiring
 Weight of broadside 37,500 lbs / 17,010 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 18.0" / 457 mm 435.00 ft / 132.59 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 79 % of normal length

   - Torpedo Bulkhead:
  4.00" / 102 mm 435.00 ft / 132.59 m 35.00 ft / 10.67 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 18.0" / 457 mm 12.0" / 305 mm  18.0" / 457 mm
 2nd: 5.00" / 127 mm 5.00" / 127 mm  5.00" / 127 mm

   - Armour deck: 8.00" / 203 mm, Conning tower: 18.00" / 457 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 108,743 shp / 81,122 Kw = 25.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 7,065 tons

Complement:
 2,249 - 2,925

Cost:
 £9.988 million / $39.950 million

Distribution of weights at normal displacement:
 Armament: 4,688 tons, 6.3 %
 Armour: 28,942 tons, 39.0 %
    - Belts: 6,201 tons, 8.3 %
    - Torpedo bulkhead: 2,253 tons, 3.0 %
    - Armament: 7,036 tons, 9.5 %
    - Armour Deck: 12,767 tons, 17.2 %
    - Conning Tower: 685 tons, 0.9 %
 Machinery: 4,119 tons, 5.5 %
 Hull, fittings & equipment: 29,460 tons, 39.6 %
 Fuel, ammunition & stores: 7,091 tons, 9.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   108,870 lbs / 49,383 Kg = 27.2 x 20.0 " / 508 mm shells or 20.0 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 9.9 ft / 3.0 m
 Roll period: 18.0 seconds
 Steadiness - As gun platform (Average = 50 %): 70 %
   - Recoil effect (Restricted arc if above 1.00): 0.62
 Seaboat quality  (Average = 1.00): 1.40

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.630
 Length to Beam Ratio: 6.30 : 1
 'Natural speed' for length: 29.15 kts
 Power going to wave formation at top speed: 44 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: 1.00 ft / 0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  31.00 ft / 9.45 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:  25.00 ft / 7.62 m
    - Average freeboard: 24.64 ft / 7.51 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 76.5 %
  - Above water (accommodation/working, high = better): 175.3 %
 Waterplane Area: 86,262 Square feet or 8,014 Square metres
 Displacement factor (Displacement / loading): 99 %
 Structure weight / hull surface area: 261 lbs/sq ft or 1,277 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.36
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Good seaboat, rides out heavy weather easily

The September 2, 2001 version of the Ger/CS/1905 scout cruiser

My drawing for the Ger/CS/1905 scout cruiser that I drew on September 2, 2001, is quite different from the photos that I have created in the last 6 months. This version has three low cased funnels, cut away side, facing forward, to increase the arc of fire for the guns, and torpedo tubes mounted abreast, just aft of the funnels and on each side of a boat that has a derrick mounted just aft of the after funnel. For Springsharp, I reduced the displacement, have gone with the lightest weight machinery, and increased draft and freeboard. That was necessary to obtain a sufficient seakeeping capability, while maintaining a 36 knot speed and the patch of armor over the machinery spaces. This is the Springsharp report:

Ger/CS/1905, Germany Scout Cruiser laid down 1905 (Engine 1950)

Displacement:
 2,195 t light; 2,267 t standard; 2,350 t normal; 2,417 t full load

Dimensions: Length overall / water x beam x draught
 370.44 ft / 370.00 ft x 38.00 ft x 14.00 ft (normal load)
 112.91 m / 112.78 m x 11.58 m  x 4.27 m

Armament:
      3 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
   Quick firing guns in deck mounts with hoists
   on centreline, evenly spread
   Aft Main mounts separated by engine room
      2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
   Quick firing guns in deck mounts with hoists
   on side, all forward
 Weight of broadside 160 lbs / 73 kg
 Shells per gun, main battery: 250
 2 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 2.00" / 51 mm 160.00 ft / 48.77 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 2.00" / 51 mm 105.00 ft / 32.00 m 8.00 ft / 2.44 m
   Main Belt covers 67 % 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       -         -

   - Conning tower: 3.00" / 76 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 68,083 shp / 50,790 Kw = 36.00 kts
 Range 2,750nm at 12.00 kts
 Bunker at max displacement = 150 tons

Complement:
 168 - 219

Cost:
 £0.274 million / $1.098 million

Distribution of weights at normal displacement:
 Armament: 20 tons, 0.9 %
 Armour: 222 tons, 9.4 %
    - Belts: 197 tons, 8.4 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 13 tons, 0.6 %
    - Armour Deck: 0 tons, 0.0 %
    - Conning Tower: 11 tons, 0.5 %
 Machinery: 1,292 tons, 55.0 %
 Hull, fittings & equipment: 662 tons, 28.2 %
 Fuel, ammunition & stores: 155 tons, 6.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   593 lbs / 269 Kg = 18.5 x 4.0 " / 102 mm shells or 0.3 torpedoes
 Stability (Unstable if below 1.00): 1.36
 Metacentric height 2.0 ft / 0.6 m
 Roll period: 11.3 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.17
 Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.418
 Length to Beam Ratio: 9.74 : 1
 'Natural speed' for length: 19.24 kts
 Power going to wave formation at top speed: 70 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 1.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  25.00 ft / 7.62 m
    - Forecastle (20 %): 23.00 ft / 7.01 m
    - Mid (33 %):  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: 17.80 ft / 5.43 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 184.5 %
  - Above water (accommodation/working, high = better): 152.9 %
 Waterplane Area: 8,753 Square feet or 813 Square metres
 Displacement factor (Displacement / loading): 65 %
 Structure weight / hull surface area: 35 lbs/sq ft or 173 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.45
  - Longitudinal: 2.53
  - Overall: 0.53
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

Roll period

I spoke yesterday with Frank Fox about some ship design issues. He had spoken with a professor at the Webb Institute about stability issues. We talked about calculating roll period. The formula is:

T=roll period in seconds
B=beam in feet
GM= metacentric height in feet
K= a constant that can vary in the range of 0.38 and 0.55

T=(B x K)/sqrt(GM)
Springsharp must use K=0.42, since the Ger/CB/1905 design has the following:
T=14.2 seconds
B=80ft
GM=5.6ft

Therefore

K=T x sqrt(GM)/B=14.2 x sqrt(5.6)/80=0.42

My September 8, 2001 version of the Ger/CB/1905 battleruiser

As part of my series of drawings from September 2001, I drew a German-looking Ger/CB/1905 battlecruiser. It was German-looking in the sense that the masts, tops, cased funnels and bridge were similar to what was used on German ships in 1912-1918. This ship was 700ft x 80ft x 24ft, and had a 19,000 ton normal displacement. The armor basis was just 4in, although the armament had 6in turrets and barbettes. The speed was a fast 31knots. The armament was 4-12in/45 and 12-4in QF guns. This works well in Springsharp with lightweight machinery. I extended the armor belt beyond the drawing to make use of the extra capacity in the design. This is the Springsharp report:

Ger/CB/1905, Germany Battlecruiser laid down 1905 (Engine 1910)

Displacement:
 16,397 t light; 16,952 t standard; 19,000 t normal; 20,638 t full load

Dimensions: Length overall / water x beam x draught
 701.00 ft / 700.00 ft x 80.00 ft x 24.00 ft (normal load)
 213.66 m / 213.36 m x 24.38 m  x 7.32 m

Armament:
      4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1905 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
   Quick firing guns in casemate mounts 
   on side, all amidships
 Weight of broadside 3,840 lbs / 1,742 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 405.00 ft / 123.44 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 89 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.50" / 38 mm 405.00 ft / 123.44 m 24.00 ft / 7.32 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: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 105,177 shp / 78,462 Kw = 31.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 3,686 tons

Complement:
 808 - 1,051

Cost:
 £1.586 million / $6.342 million

Distribution of weights at normal displacement:
 Armament: 480 tons, 2.5 %
 Armour: 3,839 tons, 20.2 %
    - Belts: 1,184 tons, 6.2 %
    - Torpedo bulkhead: 539 tons, 2.8 %
    - Armament: 649 tons, 3.4 %
    - Armour Deck: 1,374 tons, 7.2 %
    - Conning Tower: 92 tons, 0.5 %
 Machinery: 4,346 tons, 22.9 %
 Hull, fittings & equipment: 7,732 tons, 40.7 %
 Fuel, ammunition & stores: 2,603 tons, 13.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   27,866 lbs / 12,640 Kg = 32.3 x 12.0 " / 305 mm shells or 3.5 torpedoes
 Stability (Unstable if below 1.00): 1.29
 Metacentric height 5.6 ft / 1.7 m
 Roll period: 14.2 seconds
 Steadiness - As gun platform (Average = 50 %): 75 %
   - Recoil effect (Restricted arc if above 1.00): 0.39
 Seaboat quality  (Average = 1.00): 1.51

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.495
 Length to Beam Ratio: 8.75 : 1
 'Natural speed' for length: 26.46 kts
 Power going to wave formation at top speed: 52 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -1.00 degrees
 Stern overhang: 1.00 ft / 0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  31.00 ft / 9.45 m
    - Forecastle (20 %): 28.00 ft / 8.53 m
    - Mid (63 %):  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: 25.28 ft / 7.71 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 124.4 %
  - Above water (accommodation/working, high = better): 221.4 %
 Waterplane Area: 37,136 Square feet or 3,450 Square metres
 Displacement factor (Displacement / loading): 116 %
 Structure weight / hull surface area: 134 lbs/sq ft or 657 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.52
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather

The September 8, 2001 version of the Ger/CB/1906 design

The oddest thing about the Ger/CB/1906 design is that due to its lightweight machinery, the design works well (except for having a belt that is too short, according to Springsharp). I used the armored citadel length from the 2001 drawing for the calculations. When I entered the design, originally with 1917 machinery, it had too much hull strength, so I changed the machinery date to 1914. I had to change it back, as it turns out that I had forgotten to enter the anti-torpedo bulkhead. After I entered the torpedo bulkhead, I had to reduce the range to 5,600 nm to reach the magic 1.00 composite strength. The dimensions used are 800ft x 85ft x 27ft, with a normal displacement of 25,000 tons. The speed is 33 knots. The armament is 8-12in/45 and 12-4in QF guns. The armor is a legacy of my thinking in 1971, where the belt was only 4in thick, in exchange for a 33 knot speed. This is the Springsharp report:

Ger/CB/1906, Germany Battlecruiser laid down 1906 (Engine 1917)

Displacement:
 22,547 t light; 23,394 t standard; 25,000 t normal; 26,285 t full load

Dimensions: Length overall / water x beam x draught
 801.00 ft / 800.00 ft x 85.00 ft x 27.00 ft (normal load)
 244.14 m / 243.84 m x 25.91 m  x 8.23 m

Armament:
      8 - 12.00" / 305 mm guns (4x2 guns), 864.00lbs / 391.90kg shells, 1906 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1906 Model
   Quick firing guns in casemate mounts 
   on side, all amidships
 Weight of broadside 7,662 lbs / 3,475 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 425.00 ft / 129.54 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 82 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.50" / 38 mm 425.00 ft / 129.54 m 26.00 ft / 7.92 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: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 149,293 shp / 111,373 Kw = 33.00 kts
 Range 5,600nm at 15.00 kts
 Bunker at max displacement = 2,891 tons

Complement:
 993 - 1,292

Cost:
 £2.360 million / $9.439 million

Distribution of weights at normal displacement:
 Armament: 958 tons, 3.8 %
 Armour: 4,942 tons, 19.8 %
    - Belts: 1,250 tons, 5.0 %
    - Torpedo bulkhead: 613 tons, 2.5 %
    - Armament: 1,327 tons, 5.3 %
    - Armour Deck: 1,642 tons, 6.6 %
    - Conning Tower: 111 tons, 0.4 %
 Machinery: 5,473 tons, 21.9 %
 Hull, fittings & equipment: 11,174 tons, 44.7 %
 Fuel, ammunition & stores: 2,453 tons, 9.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   31,016 lbs / 14,068 Kg = 35.9 x 12.0 " / 305 mm shells or 3.6 torpedoes
 Stability (Unstable if below 1.00): 1.15
 Metacentric height 5.1 ft / 1.5 m
 Roll period: 15.9 seconds
 Steadiness - As gun platform (Average = 50 %): 66 %
   - Recoil effect (Restricted arc if above 1.00): 0.73
 Seaboat quality  (Average = 1.00): 1.33

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.477
 Length to Beam Ratio: 9.41 : 1
 'Natural speed' for length: 28.28 kts
 Power going to wave formation at top speed: 50 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: 1.00 ft / 0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  31.00 ft / 9.45 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: 25.60 ft / 7.80 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 130.2 %
  - Above water (accommodation/working, high = better): 219.4 %
 Waterplane Area: 44,367 Square feet or 4,122 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 162 lbs/sq ft or 791 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
 Good seaboat, rides out heavy weather easily