My original concept for a German scout for 1905

My original concept for a German scout for 1905 was rather like the later British Botha class, except faster. I was able to come close to the original concept in Springsharp. The draft had to be increased from 12ft to 13ft and the normal displacement had to be increased to 2,250 tons from 2,200 tons. The machinery necessarily had to be the highest power output possible, which was 56.29 SHP/ton of machinery. This approaches the 60SHP/ton of the Swift, which was a contemporary. The Swift suffered, however, from being considerably overweight. This is the Springsharp report:

Ger/CS/1905 Original Concept, Enter country Enter ship type laid down 1905 (Engine 1950)

Displacement:
 2,056 t light; 2,120 t standard; 2,250 t normal; 2,354 t full load

Dimensions: Length overall / water x beam x draught
 365.00 ft / 365.00 ft x 37.00 ft x 13.00 ft (normal load)
 111.25 m / 111.25 m x 11.28 m  x 3.96 m

Armament:
      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 centreline ends, evenly spread
      4 - 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 amidships
 Weight of broadside 192 lbs / 87 kg
 Shells per gun, main battery: 150
 2 - 18.0" / 457.2 mm above water torpedoes

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 76,781 shp / 57,278 Kw = 37.00 kts
 Range 2,800nm at 15.00 kts
 Bunker at max displacement = 234 tons

Complement:
 163 - 212

Cost:
 £0.283 million / $1.132 million

Distribution of weights at normal displacement:
 Armament: 24 tons, 1.1 %
 Machinery: 1,364 tons, 60.6 %
 Hull, fittings & equipment: 668 tons, 29.7 %
 Fuel, ammunition & stores: 194 tons, 8.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   492 lbs / 223 Kg = 15.4 x 4.0 " / 102 mm shells or 0.3 torpedoes
 Stability (Unstable if below 1.00): 1.44
 Metacentric height 2.1 ft / 0.6 m
 Roll period: 10.7 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.23
 Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.449
 Length to Beam Ratio: 9.86 : 1
 'Natural speed' for length: 19.10 kts
 Power going to wave formation at top speed: 73 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 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 %): 24.00 ft / 7.32 m
    - Mid (34 %):  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: 18.88 ft / 5.75 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 203.7 %
  - Above water (accommodation/working, high = better): 164.8 %
 Waterplane Area: 8,604 Square feet or 799 Square metres
 Displacement factor (Displacement / loading): 58 %
 Structure weight / hull surface area: 34 lbs/sq ft or 167 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.42
  - Longitudinal: 3.19
  - Overall: 0.52
 Hull space for machinery, storage, compartmentation is extremely poor
 Room for accommodation and workspaces is excellent

New calculations for the Ger/CS/1909 scout

With machinery that is 48.7 SHP/ton, the Ger/CS/1909 scout cruiser works quite well. The one thing that I did was to increase the draft from 12ft to 13ft. That sufficed to obtain an adequate seakeeping ability, along with hull strenght. My original hope was to have machinery that would generate 45 SHP/ton of machinery. More power was required to reach 35 knots than I had expected, so higher output machinery was required. When I question it, I just remember the Swift with 60 SHP/ton of machinery weight a few years earlier. This is the Springsharp report:

Ger/CS/1909, Germany Scout Cruiser laid down 1909 (Engine 1937)

Displacement:
 1,880 t light; 1,943 t standard; 2,100 t normal; 2,225 t full load

Dimensions: Length overall / water x beam x draught
 350.00 ft / 350.00 ft x 37.00 ft x 13.00 ft (normal load)
 106.68 m / 106.68 m x 11.28 m  x 3.96 m

Armament:
      4 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1909 Model
   Quick firing guns in deck mounts with hoists
   on centreline, evenly spread
   Aft Main mounts separated by engine room
 Weight of broadside 250 lbs / 113 kg
 Shells per gun, main battery: 150
 2 - 21.0" / 533.4 mm above water torpedoes

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 59,110 shp / 44,096 Kw = 35.00 kts
 Range 3,200nm at 15.00 kts
 Bunker at max displacement = 282 tons

Complement:
 154 - 201

Cost:
 £0.262 million / $1.047 million

Distribution of weights at normal displacement:
 Armament: 31 tons, 1.5 %
 Machinery: 1,213 tons, 57.8 %
 Hull, fittings & equipment: 636 tons, 30.3 %
 Fuel, ammunition & stores: 220 tons, 10.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   511 lbs / 232 Kg = 8.2 x 5.0 " / 127 mm shells or 0.3 torpedoes
 Stability (Unstable if below 1.00): 1.44
 Metacentric height 2.1 ft / 0.6 m
 Roll period: 10.7 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.29
 Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.437
 Length to Beam Ratio: 9.46 : 1
 'Natural speed' for length: 18.71 kts
 Power going to wave formation at top speed: 71 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 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 %): 23.00 ft / 7.01 m
    - Mid (35 %):  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: 17.96 ft / 5.47 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 197.6 %
  - Above water (accommodation/working, high = better): 152.2 %
 Waterplane Area: 8,173 Square feet or 759 Square metres
 Displacement factor (Displacement / loading): 60 %
 Structure weight / hull surface area: 36 lbs/sq ft or 175 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.46
  - Longitudinal: 3.04
  - Overall: 0.55
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

I found the armor diagram for the Ger/CBL/1915 Mod.A design

Since I had the cross section for the Ger/CBL/1915 design, I thought that it would be worth recalculating. One thing I learned immediately is that there is no armor protection on the anti-torpedo protection system. To save weight, there is only compartmentation. This is the new Springsharp report:

Ger/CBL/1915 Mod.A, Enter country Enter ship type laid down 1915 (Engine 1950)

Displacement:
 20,941 t light; 21,537 t standard; 22,600 t normal; 23,450 t full load

Dimensions: Length overall / water x beam x draught
 803.83 ft / 800.00 ft x 80.00 ft x 25.00 ft (normal load)
 245.01 m / 243.84 m x 24.38 m  x 7.62 m

Armament:
      2 - 12.00" / 305 mm guns (1x2 guns), 864.00lbs / 391.90kg shells, 1915 Model
   Breech loading guns in a turret (on a barbette)
   on centreline forward
      12 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1915 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships
 Weight of broadside 3,024 lbs / 1,372 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 620.00 ft / 188.98 m 12.00 ft / 3.66 m
 Ends: 3.00" / 76 mm 620.00 ft / 188.98 m 8.00 ft / 2.44 m
   Main Belt covers 119 % of normal length

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

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

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 6 shafts, 304,597 shp / 227,229 Kw = 40.00 kts
 Range 3,750nm at 18.00 kts
 Bunker at max displacement = 1,914 tons

Complement:
 921 - 1,198

Cost:
 £3.012 million / $12.047 million

Distribution of weights at normal displacement:
 Armament: 378 tons, 1.7 %
 Armour: 3,753 tons, 16.6 %
    - Belts: 1,757 tons, 7.8 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 323 tons, 1.4 %
    - Armour Deck: 1,570 tons, 6.9 %
    - Conning Tower: 103 tons, 0.5 %
 Machinery: 7,287 tons, 32.2 %
 Hull, fittings & equipment: 9,523 tons, 42.1 %
 Fuel, ammunition & stores: 1,659 tons, 7.3 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   23,104 lbs / 10,480 Kg = 26.7 x 12.0 " / 305 mm shells or 1.9 torpedoes
 Stability (Unstable if below 1.00): 1.27
 Metacentric height 5.5 ft / 1.7 m
 Roll period: 14.3 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.29
 Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.494
 Length to Beam Ratio: 10.00 : 1
 'Natural speed' for length: 28.28 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:  35.00 ft / 10.67 m
    - Forecastle (20 %): 30.00 ft / 9.14 m
    - Mid (67 %):  30.00 ft / 9.14 m (22.00 ft / 6.71 m aft of break)
    - Quarterdeck (15 %): 22.00 ft / 6.71 m
    - Stern:  22.00 ft / 6.71 m
    - Average freeboard: 27.76 ft / 8.46 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 117.1 %
  - Above water (accommodation/working, high = better): 243.8 %
 Waterplane Area: 42,425 Square feet or 3,941 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 138 lbs/sq ft or 675 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.44
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

A design study for a smaller Ger/BB/1915 CDV

I have a pencil inboard profile for a smaller coast defense battleship labelled Ger/BB/1915 CDV (Coast Defense Vessel). The ship is moderately well protected, has a speed of 20 knots, and carries 4-16.5in guns. The ship has an anachronistic look, with a tower formast and trunked funnel. The Springsharp design worked quite well:

Ger/BB/1915 CDV Early Version, Enter country Enter ship type laid down 1915

Displacement:
 20,836 t light; 21,691 t standard; 22,375 t normal; 22,922 t full load

Dimensions: Length overall / water x beam x draught
 581.00 ft / 580.00 ft x 100.00 ft x 25.00 ft (normal load)
 177.09 m / 176.78 m x 30.48 m  x 7.62 m

Armament:
      4 - 16.50" / 419 mm guns (2x2 guns), 2,246.06lbs / 1,018.80kg shells, 1915 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      20 - 5.00" / 127 mm guns (10x2 guns), 62.50lbs / 28.35kg shells, 1915 Model
   Quick firing guns in turrets (on barbettes)
   on side, all amidships, 4 raised mounts - superfiring
 Weight of broadside 10,234 lbs / 4,642 kg
 Shells per gun, main battery: 70

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 13.0" / 330 mm 325.00 ft / 99.06 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 86 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 325.00 ft / 99.06 m 23.00 ft / 7.01 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 14.0" / 356 mm 8.00" / 203 mm  13.0" / 330 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

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

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 24,419 shp / 18,217 Kw = 20.00 kts
 Range 3,600nm at 12.00 kts
 Bunker at max displacement = 1,231 tons

Complement:
 914 - 1,189

Cost:
 £2.812 million / $11.249 million

Distribution of weights at normal displacement:
 Armament: 1,279 tons, 5.7 %
 Armour: 8,787 tons, 39.3 %
    - Belts: 3,093 tons, 13.8 %
    - Torpedo bulkhead: 553 tons, 2.5 %
    - Armament: 1,950 tons, 8.7 %
    - Armour Deck: 2,968 tons, 13.3 %
    - Conning Tower: 222 tons, 1.0 %
 Machinery: 925 tons, 4.1 %
 Hull, fittings & equipment: 9,845 tons, 44.0 %
 Fuel, ammunition & stores: 1,539 tons, 6.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   45,251 lbs / 20,526 Kg = 20.1 x 16.5 " / 419 mm shells or 8.8 torpedoes
 Stability (Unstable if below 1.00): 1.15
 Metacentric height 6.5 ft / 2.0 m
 Roll period: 16.5 seconds
 Steadiness - As gun platform (Average = 50 %): 87 %
   - Recoil effect (Restricted arc if above 1.00): 0.59
 Seaboat quality  (Average = 1.00): 1.73

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.540
 Length to Beam Ratio: 5.80 : 1
 'Natural speed' for length: 24.08 kts
 Power going to wave formation at top speed: 40 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 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 %): 22.00 ft / 6.71 m
    - Mid (50 %):  22.00 ft / 6.71 m
    - Quarterdeck (15 %): 22.00 ft / 6.71 m
    - Stern:  22.00 ft / 6.71 m
    - Average freeboard: 22.32 ft / 6.80 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 70.2 %
  - Above water (accommodation/working, high = better): 183.9 %
 Waterplane Area: 40,104 Square feet or 3,726 Square metres
 Displacement factor (Displacement / loading): 107 %
 Structure weight / hull surface area: 181 lbs/sq ft or 883 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.92
  - Longitudinal: 2.06
  - 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

A German battleship design study with 15-11in guns

I had thought that a natural alternative for a German battleship would have 15-11in guns in triple turrets. I drew a pencil sketch and did some calculations. These were the origanally planned weights:

• Auxiliary machinery: 1,100 tons
• Hull: 6,960 tons
• Machinery: 833 tons
• Protection: 15,211 tons
• Armament: 1,656 tons
• Miscellaneous: 2,240 tons

The ship was to be 580ft x 100ft x 33.3ft with a normal displacement of 28,000 tons. The speed would be only 20 knots. I massaged the Springsharp design until I achieved a balanced design. The biggest deviation was a 23-knot speed. The Springsharp report had less protection, as well:

Ger/BB/1910 Design Study, Germany Battleship laid down 1910

Displacement:
 24,415 t light; 25,559 t standard; 28,000 t normal; 29,953 t full load

Dimensions: Length overall / water x beam x draught
 580.00 ft / 580.00 ft x 100.00 ft x 33.30 ft (normal load)
 176.78 m / 176.78 m x 30.48 m  x 10.15 m

Armament:
      12 - 11.00" / 279 mm guns (4x3 guns), 665.50lbs / 301.87kg shells, 1910 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      3 - 11.00" / 279 mm guns (1x3 guns), 665.50lbs / 301.87kg shells, 1910 Model
   Breech loading guns in a turret (on a barbette)
   on centreline amidships
      12 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1910 Model
   Quick firing guns in casemate mounts 
   on side, evenly spread
   8 guns in hull casemates - Limited use in heavy seas
 Weight of broadside 11,279 lbs / 5,116 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 13.0" / 330 mm 380.00 ft / 115.82 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
  3.00" / 76 mm 380.00 ft / 115.82 m 31.00 ft / 9.45 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 13.0" / 330 mm 9.00" / 229 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: 13.00" / 330 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 46,342 shp / 34,571 Kw = 23.00 kts
 Range 6,200nm at 15.00 kts
 Bunker at max displacement = 4,394 tons

Complement:
 1,081 - 1,406

Cost:
 £2.307 million / $9.227 million

Distribution of weights at normal displacement:
 Armament: 1,410 tons, 5.0 %
 Armour: 10,693 tons, 38.2 %
    - Belts: 3,677 tons, 13.1 %
    - Torpedo bulkhead: 1,308 tons, 4.7 %
    - Armament: 2,571 tons, 9.2 %
    - Armour Deck: 2,879 tons, 10.3 %
    - Conning Tower: 258 tons, 0.9 %
 Machinery: 1,915 tons, 6.8 %
 Hull, fittings & equipment: 10,397 tons, 37.1 %
 Fuel, ammunition & stores: 3,585 tons, 12.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   42,210 lbs / 19,146 Kg = 63.4 x 11.0 " / 279 mm shells or 8.6 torpedoes
 Stability (Unstable if below 1.00): 1.06
 Metacentric height 5.6 ft / 1.7 m
 Roll period: 17.7 seconds
 Steadiness - As gun platform (Average = 50 %): 80 %
   - Recoil effect (Restricted arc if above 1.00): 0.58
 Seaboat quality  (Average = 1.00): 1.60

Hull form characteristics:
 Hull has raised forecastle, rise forward of midbreak
 Block coefficient: 0.507
 Length to Beam Ratio: 5.80 : 1
 'Natural speed' for length: 24.08 kts
 Power going to wave formation at top speed: 48 %
 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:  30.00 ft / 9.14 m
    - Forecastle (20 %): 30.00 ft / 9.14 m (0.00 ft / 0.00 m aft of break)
    - Mid (45 %):  30.00 ft / 9.14 m (22.00 ft / 6.71 m aft of break)
    - Quarterdeck (15 %): 22.00 ft / 6.71 m
    - Stern:  22.00 ft / 6.71 m
    - Average freeboard: 21.85 ft / 6.66 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 75.6 %
  - Above water (accommodation/working, high = better): 132.4 %
 Waterplane Area: 38,906 Square feet or 3,615 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 184 lbs/sq ft or 899 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.92
  - Longitudinal: 2.27
  - 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

A new attempt a the Ger/CB/1905 flush decked battlecruiser

This is a new version of the Ger/CB/1905 battlecruiser design. The design has a flush deck and two funnels. The armament has superfiring turrets for the 8-12in/45 guns. I was not able to reach 27.7 knots without further reductions in machinery weight and increase in power. These are originally planned weights:

• Hull=7,620 tons
• Machinery=2,280 tons
• Auxiliary machinery=720 tons
• Armament=1,216 tons
• Protection=7,284 tons
• Miscellaneous=1,600 tons

This is the new Springsharp report:

Ger/CB/1905 flush deck, Germany Battlecruiser laid down 1905 (Engine 1913)

Displacement:
 19,635 t light; 20,439 t standard; 21,500 t normal; 22,349 t full load

Dimensions: Length overall / water x beam x draught
 560.00 ft / 560.00 ft x 94.00 ft x 26.00 ft (normal load)
 170.69 m / 170.69 m x 28.65 m  x 7.92 m

Armament:
      8 - 12.00" / 305 mm guns (4x2 guns), 864.00lbs / 391.90kg shells, 1905 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1905 Model
   Quick firing guns in casemate mounts 
   on side, all amidships
 Weight of broadside 8,208 lbs / 3,723 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 10.0" / 254 mm 370.00 ft / 112.78 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 102 % of normal length

   - Torpedo Bulkhead:
  1.50" / 38 mm 370.00 ft / 112.78 m 24.00 ft / 7.32 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 8.00" / 203 mm 8.00" / 203 mm  10.0" / 254 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 8.00" / 203 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 66,175 shp / 49,367 Kw = 26.00 kts
 Range 4,000nm at 14.00 kts
 Bunker at max displacement = 1,910 tons

Complement:
 887 - 1,154

Cost:
 £1.912 million / $7.648 million

Distribution of weights at normal displacement:
 Armament: 1,026 tons, 4.8 %
 Armour: 7,477 tons, 34.8 %
    - Belts: 2,752 tons, 12.8 %
    - Torpedo bulkhead: 493 tons, 2.3 %
    - Armament: 2,060 tons, 9.6 %
    - Armour Deck: 2,039 tons, 9.5 %
    - Conning Tower: 133 tons, 0.6 %
 Machinery: 2,593 tons, 12.1 %
 Hull, fittings & equipment: 8,538 tons, 39.7 %
 Fuel, ammunition & stores: 1,865 tons, 8.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   31,426 lbs / 14,255 Kg = 36.4 x 12.0 " / 305 mm shells or 5.2 torpedoes
 Stability (Unstable if below 1.00): 1.12
 Metacentric height 5.7 ft / 1.7 m
 Roll period: 16.6 seconds
 Steadiness - As gun platform (Average = 50 %): 59 %
   - Recoil effect (Restricted arc if above 1.00): 0.50
 Seaboat quality  (Average = 1.00): 1.18

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.550
 Length to Beam Ratio: 5.96 : 1
 'Natural speed' for length: 23.66 kts
 Power going to wave formation at top speed: 55 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 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 %): 22.00 ft / 6.71 m
    - Mid (50 %):  22.00 ft / 6.71 m
    - Quarterdeck (15 %): 22.00 ft / 6.71 m
    - Stern:  22.00 ft / 6.71 m
    - Average freeboard: 22.48 ft / 6.85 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 95.2 %
  - Above water (accommodation/working, high = better): 173.5 %
 Waterplane Area: 36,731 Square feet or 3,412 Square metres
 Displacement factor (Displacement / loading): 103 %
 Structure weight / hull surface area: 165 lbs/sq ft or 808 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.93
  - Longitudinal: 1.92
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent

I am investigating the possibility of being able to offer posters

It looks like I will be able to offer posters. The only question will be the cost. Sadly, they would not be four-color printing, but just digital printing, due to the cost. I would like to have a poster of my large painting of the Seydlitz after Jutland. I would like some posters of some of my photoart, although I may be the only one interested.

The flush-decked 1905 German battleship revisited

I just recalculated the German battleship design study Ger/BB/1905 with the flush deck. The dimensions were influenced by the real Westfalen class. The dimensions are 490ft x 90ft x 29ft. The armament is 8-12in/45 BLR and 12-6in/45 QF guns. The armor basis is 12in, although that is not consistently applied. The maximum speed was 22 knots. This is the new Springsharp report:

Ger/BB/1905 flush deck, Germany Battleship laid down 1905 (Engine 1909)

Displacement:
 17,805 t light; 18,579 t standard; 20,000 t normal; 21,137 t full load

Dimensions: Length overall / water x beam x draught
 490.00 ft / 490.00 ft x 90.00 ft x 29.00 ft (normal load)
 149.35 m / 149.35 m x 27.43 m  x 8.84 m

Armament:
      8 - 12.00" / 305 mm guns (4x2 guns), 864.00lbs / 391.90kg shells, 1905 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1905 Model
   Quick firing guns in casemate mounts 
   on side, all amidships
 Weight of broadside 8,208 lbs / 3,723 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 12.0" / 305 mm 320.00 ft / 97.54 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
  1.50" / 38 mm 320.00 ft / 97.54 m 27.00 ft / 8.23 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 8.00" / 203 mm 6.00" / 152 mm  12.0" / 305 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 8.00" / 203 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 34,347 shp / 25,623 Kw = 22.00 kts
 Range 4,800nm at 14.00 kts
 Bunker at max displacement = 2,557 tons

Complement:
 840 - 1,093

Cost:
 £1.704 million / $6.814 million

Distribution of weights at normal displacement:
 Armament: 1,026 tons, 5.1 %
 Armour: 7,901 tons, 39.5 %
    - Belts: 2,892 tons, 14.5 %
    - Torpedo bulkhead: 480 tons, 2.4 %
    - Armament: 2,131 tons, 10.7 %
    - Armour Deck: 2,272 tons, 11.4 %
    - Conning Tower: 127 tons, 0.6 %
 Machinery: 1,561 tons, 7.8 %
 Hull, fittings & equipment: 7,317 tons, 36.6 %
 Fuel, ammunition & stores: 2,195 tons, 11.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   30,661 lbs / 13,908 Kg = 35.5 x 12.0 " / 305 mm shells or 5.7 torpedoes
 Stability (Unstable if below 1.00): 1.04
 Metacentric height 4.6 ft / 1.4 m
 Roll period: 17.5 seconds
 Steadiness - As gun platform (Average = 50 %): 74 %
   - Recoil effect (Restricted arc if above 1.00): 0.68
 Seaboat quality  (Average = 1.00): 1.49

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.547
 Length to Beam Ratio: 5.44 : 1
 'Natural speed' for length: 22.14 kts
 Power going to wave formation at top speed: 52 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 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 %): 21.00 ft / 6.40 m
    - Mid (50 %):  21.00 ft / 6.40 m
    - Quarterdeck (15 %): 21.00 ft / 6.40 m
    - Stern:  21.00 ft / 6.40 m
    - Average freeboard: 21.32 ft / 6.50 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 82.2 %
  - Above water (accommodation/working, high = better): 146.2 %
 Waterplane Area: 30,701 Square feet or 2,852 Square metres
 Displacement factor (Displacement / loading): 104 %
 Structure weight / hull surface area: 164 lbs/sq ft or 801 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.90
  - Longitudinal: 2.52
  - 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

A German light cruiser design study, circa 1914

I am unsure of the exact year that this was intended to be laid down, but I have estimated that it was for 1914. I had originally hoped that it would be only 4,240 tons displacement. At this point, I am unsure if that was Standard or normal. The speed was set at 32 knots, maximum. To achieve adequate strength, the machinery had to be light and the normal displacement had to be greater. In this case, it was 4,950 tons with a draft of 18ft instead of 16ft. The armament was 4-6in QF guns with 8-21in TT in twin mountings. The armor basis was 2in. This is the Springsharp report:

Ger/CL/1914, Enter country Enter ship type laid down 1914 (Engine 1921)

Displacement:
 4,574 t light; 4,716 t standard; 4,950 t normal; 5,137 t full load

Dimensions: Length overall / water x beam x draught
 450.87 ft / 450.00 ft x 41.00 ft x 18.00 ft (normal load)
 137.43 m / 137.16 m x 12.50 m  x 5.49 m

Armament:
      4 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1914 Model
   Breech loading 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: 180
 8 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 2.00" / 51 mm 360.00 ft / 109.73 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 2.00" / 51 mm 250.00 ft / 76.20 m 8.00 ft / 2.44 m
   Main Belt covers 123 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Armour deck: 1.00" / 25 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 2 shafts, 61,617 shp / 45,967 Kw = 32.00 kts
 Range 3,900nm at 12.00 kts
 Bunker at max displacement = 422 tons

Complement:
 294 - 383

Cost:
 £0.639 million / $2.557 million

Distribution of weights at normal displacement:
 Armament: 54 tons, 1.1 %
 Armour: 632 tons, 12.8 %
    - Belts: 400 tons, 8.1 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 0 tons, 0.0 %
    - Armour Deck: 232 tons, 4.7 %
    - Conning Tower: 0 tons, 0.0 %
 Machinery: 2,120 tons, 42.8 %
 Hull, fittings & equipment: 1,767 tons, 35.7 %
 Fuel, ammunition & stores: 376 tons, 7.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   2,805 lbs / 1,272 Kg = 26.0 x 6.0 " / 152 mm shells or 0.6 torpedoes
 Stability (Unstable if below 1.00): 1.24
 Metacentric height 2.0 ft / 0.6 m
 Roll period: 12.3 seconds
 Steadiness - As gun platform (Average = 50 %): 60 %
   - Recoil effect (Restricted arc if above 1.00): 0.33
 Seaboat quality  (Average = 1.00): 1.19

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.522
 Length to Beam Ratio: 10.98 : 1
 'Natural speed' for length: 21.21 kts
 Power going to wave formation at top speed: 63 %
 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:  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): 147.2 %
  - Above water (accommodation/working, high = better): 94.6 %
 Waterplane Area: 12,540 Square feet or 1,165 Square metres
 Displacement factor (Displacement / loading): 93 %
 Structure weight / hull surface area: 70 lbs/sq ft or 340 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.91
  - Longitudinal: 2.46
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is adequate

A German 1912 battleship design study

I believe this to be a German battleship design study, not British. My friend Cliff ultimately decided to build battleships with 9-15in guns in 1912, and I decided to build battlecruisers instead of battleships. Cliff had gone so far ahead of what I had been thinking of doing, that I had radically reshape my plans. This design study was what I had originally been considering building. The battleship would have had 9-12in/50 and 8-6in/50 QF guns. The armour basis was 13in. I have assumed that it would be a wide slab, and "all-or-nothing". The speed was 25 knots. They would have been good ships, although they would have been underarmed. This is the Springsharp report:

Ger/BB/1912, Germany Battleship laid down 1912

Displacement:
 26,324 t light; 26,904 t standard; 29,000 t normal; 30,677 t full load

Dimensions: Length overall / water x beam x draught
 650.00 ft / 650.00 ft x 100.00 ft x 28.70 ft (normal load)
 198.12 m / 198.12 m x 30.48 m  x 8.75 m

Armament:
      9 - 12.00" / 305 mm guns (3x3 guns), 864.00lbs / 391.90kg shells, 1912 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1912 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread
 Weight of broadside 8,640 lbs / 3,919 kg
 Shells per gun, main battery: 0

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 13.0" / 330 mm 425.00 ft / 129.54 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 425.00 ft / 129.54 m 27.00 ft / 8.23 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: 2.00" / 51 mm       -         -

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

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 63,604 shp / 47,448 Kw = 25.00 kts
 Range 5,600nm at 15.00 kts
 Bunker at max displacement = 3,774 tons

Complement:
 1,110 - 1,444

Cost:
 £2.184 million / $8.734 million

Distribution of weights at normal displacement:
 Armament: 1,080 tons, 3.7 %
 Armour: 11,150 tons, 38.4 %
    - Belts: 4,081 tons, 14.1 %
    - Torpedo bulkhead: 849 tons, 2.9 %
    - Armament: 2,618 tons, 9.0 %
    - Armour Deck: 3,338 tons, 11.5 %
    - Conning Tower: 264 tons, 0.9 %
 Machinery: 2,536 tons, 8.7 %
 Hull, fittings & equipment: 11,557 tons, 39.9 %
 Fuel, ammunition & stores: 2,676 tons, 9.2 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   60,694 lbs / 27,531 Kg = 70.2 x 12.0 " / 305 mm shells or 11.0 torpedoes
 Stability (Unstable if below 1.00): 1.08
 Metacentric height 5.8 ft / 1.8 m
 Roll period: 17.4 seconds
 Steadiness - As gun platform (Average = 50 %): 91 %
   - Recoil effect (Restricted arc if above 1.00): 0.69
 Seaboat quality  (Average = 1.00): 1.82

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.544
 Length to Beam Ratio: 6.50 : 1
 'Natural speed' for length: 25.50 kts
 Power going to wave formation at top speed: 48 %
 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 %): 30.00 ft / 9.14 m
    - Mid (67 %):  30.00 ft / 9.14 m (22.00 ft / 6.71 m aft of break)
    - Quarterdeck (15 %): 22.00 ft / 6.71 m
    - Stern:  22.00 ft / 6.71 m
    - Average freeboard: 27.52 ft / 8.39 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 69.2 %
  - Above water (accommodation/working, high = better): 215.1 %
 Waterplane Area: 45,112 Square feet or 4,191 Square metres
 Displacement factor (Displacement / loading): 117 %
 Structure weight / hull surface area: 175 lbs/sq ft or 854 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.92
  - Longitudinal: 2.09
  - 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

My latest attempt at the Ger/CB/1906 design

I tried the Ger/CB/1906 design as originally specified, and found that I had to increase the displacement and draft to obtain sufficient strength. The ship was intended to be 800ft x 85ft x 25.6ft with a standard displacement of 25,000 tons (I believe it was standard and not normal). My new version had a 27.5ft draft with a 25,245 ton standard displacement. Normal displacement was 26,750 tons. The armament is 8-12in/45 BLR with 12-4in QF guns in shields. The armor basis is only 4in, as this was a very radical concept intended to reach a fairly high speed with 8-12in guns. This is the new Springsharp report:

Ger/CB/1906, Germany Battlecruiser laid down 1906 (Engine 1911)

Displacement:
 24,382 t light; 25,245 t standard; 26,750 t normal; 27,954 t full load

Dimensions: Length overall / water x beam x draught
 800.00 ft / 800.00 ft x 85.00 ft x 27.50 ft (normal load)
 243.84 m / 243.84 m x 25.91 m  x 8.38 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 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1906 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread
 Weight of broadside 7,296 lbs / 3,309 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 520.00 ft / 158.50 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 100 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 520.00 ft / 158.50 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: 2.00" / 51 mm       -         -

   - Armour deck: 3.00" / 76 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 157,197 shp / 117,269 Kw = 33.00 kts
 Range 4,500nm at 14.00 kts
 Bunker at max displacement = 2,708 tons

Complement:
 1,045 - 1,359

Cost:
 £2.513 million / $10.050 million

Distribution of weights at normal displacement:
 Armament: 912 tons, 3.4 %
 Armour: 5,636 tons, 21.1 %
    - Belts: 1,392 tons, 5.2 %
    - Torpedo bulkhead: 462 tons, 1.7 %
    - Armament: 1,265 tons, 4.7 %
    - Armour Deck: 2,516 tons, 9.4 %
    - Conning Tower: 0 tons, 0.0 %
 Machinery: 6,380 tons, 23.8 %
 Hull, fittings & equipment: 11,454 tons, 42.8 %
 Fuel, ammunition & stores: 2,368 tons, 8.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   31,069 lbs / 14,093 Kg = 36.0 x 12.0 " / 305 mm shells or 3.4 torpedoes
 Stability (Unstable if below 1.00): 1.14
 Metacentric height 5.0 ft / 1.5 m
 Roll period: 15.9 seconds
 Steadiness - As gun platform (Average = 50 %): 66 %
   - Recoil effect (Restricted arc if above 1.00): 0.75
 Seaboat quality  (Average = 1.00): 1.33

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.501
 Length to Beam Ratio: 9.41 : 1
 'Natural speed' for length: 28.28 kts
 Power going to wave formation at top speed: 51 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -1.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  33.00 ft / 10.06 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: 26.68 ft / 8.13 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 134.4 %
  - Above water (accommodation/working, high = better): 221.3 %
 Waterplane Area: 45,334 Square feet or 4,212 Square metres
 Displacement factor (Displacement / loading): 104 %
 Structure weight / hull surface area: 161 lbs/sq ft or 786 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

A revision to what I just did: Ger/CB/1905

I found on a succeeding page, a midships cross section of the Ger/CB/1905, and I realized that what I just published was different than this. The lower belt is 4in and the upper belt is just 3in. The deck armor should be 3in and the anti-torpedo protection should be just 1in. This also shows the Ger/CB/1905 as not having a flat bottom. The floor angles up about two feet from the centerline to the anti-torpedo bulkhead position. This is the revised Springsharp report:

Ger/CB/1905, Germany Battlecruiser laid down 1905 (Engine 1909)

Displacement:
 16,893 t light; 17,452 t standard; 19,000 t normal; 20,239 t full load

Dimensions: Length overall / water x beam x draught
 700.00 ft / 700.00 ft x 80.00 ft x 24.40 ft (normal load)
 213.36 m / 213.36 m x 24.38 m  x 7.44 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
      10 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
   Quick firing guns in casemate mounts 
   on side, evenly spread
      4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
   Breech loading guns in deck mounts with hoists
   on side, evenly spread, all raised mounts
 Weight of broadside 3,904 lbs / 1,771 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 550.00 ft / 167.64 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 3.00" / 76 mm 550.00 ft / 167.64 m 8.00 ft / 2.44 m
   Main Belt covers 121 % 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 24.00 ft / 7.32 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm
 3rd: 2.00" / 51 mm       -         -

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

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 104,749 shp / 78,142 Kw = 31.00 kts
 Range 4,600nm at 15.00 kts
 Bunker at max displacement = 2,787 tons

Complement:
 808 - 1,051

Cost:
 £1.668 million / $6.671 million

Distribution of weights at normal displacement:
 Armament: 488 tons, 2.6 %
 Armour: 4,310 tons, 22.7 %
    - Belts: 1,255 tons, 6.6 %
    - Torpedo bulkhead: 488 tons, 2.6 %
    - Armament: 429 tons, 2.3 %
    - Armour Deck: 2,046 tons, 10.8 %
    - Conning Tower: 92 tons, 0.5 %
 Machinery: 4,761 tons, 25.1 %
 Hull, fittings & equipment: 7,334 tons, 38.6 %
 Fuel, ammunition & stores: 2,107 tons, 11.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   23,983 lbs / 10,879 Kg = 27.8 x 12.0 " / 305 mm shells or 3.0 torpedoes
 Stability (Unstable if below 1.00): 1.33
 Metacentric height 5.9 ft / 1.8 m
 Roll period: 13.8 seconds
 Steadiness - As gun platform (Average = 50 %): 67 %
   - Recoil effect (Restricted arc if above 1.00): 0.33
 Seaboat quality  (Average = 1.00): 1.35

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.487
 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): -2.00 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 (61 %):  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: 22.12 ft / 6.74 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 134.1 %
  - Above water (accommodation/working, high = better): 191.6 %
 Waterplane Area: 36,866 Square feet or 3,425 Square metres
 Displacement factor (Displacement / loading): 107 %
 Structure weight / hull surface area: 132 lbs/sq ft or 646 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

A variant of the Ger/CB/1915 design ("Blücher")

I have an early sketch of the Ger/CB/1905 light battlecruiser design that has a better secondary battery than the other versions. The ship has the same 4-12in/45 BLR but has 10-4in QF guns in casemates and then 4-4in QF guns in shields mounted on the superstructure, giving 14-4in QF guns. The ship otherwise is consistent with the rather sparse specification. The original cost was estimated at £1,710,000. This is the Springsharp report:

Ger/CB/1905, Germany Battlecruiser laid down 1905 (Engine 1909)

Displacement:
 16,767 t light; 17,325 t standard; 19,000 t normal; 20,340 t full load

Dimensions: Length overall / water x beam x draught
 700.00 ft / 700.00 ft x 80.00 ft x 24.40 ft (normal load)
 213.36 m / 213.36 m x 24.38 m  x 7.44 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
     10 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
   Quick firing guns in casemate mounts
   on side, evenly spread
     4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
   Breech loading guns in deck mounts with hoists
   on side, evenly spread, all raised mounts
 Weight of broadside 3,904 lbs / 1,771 kg
 Shells per gun, main battery: 80

Armour:
  - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 550.00 ft / 167.64 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 121 % of normal length
   Main belt does not fully cover magazines and engineering spaces

  - Torpedo Bulkhead:
  1.50" / 38 mm 550.00 ft / 167.64 m 24.00 ft / 7.32 m

  - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm
 3rd: 2.00" / 51 mm       -         -

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

Machinery:
 Oil fired boilers, steam turbines,
 Direct drive, 4 shafts, 104,749 shp / 78,142 Kw = 31.00 kts
 Range 5,000nm at 15.00 kts
 Bunker at max displacement = 3,014 tons

Complement:
 808 - 1,051

Cost:
 £1.663 million / $6.653 million

Distribution of weights at normal displacement:
 Armament: 488 tons, 2.6 %
 Armour: 4,141 tons, 21.8 %
    - Belts: 1,524 tons, 8.0 %
    - Torpedo bulkhead: 733 tons, 3.9 %
    - Armament: 429 tons, 2.3 %
    - Armour Deck: 1,364 tons, 7.2 %
    - Conning Tower: 92 tons, 0.5 %
 Machinery: 4,761 tons, 25.1 %
 Hull, fittings & equipment: 7,376 tons, 38.8 %
 Fuel, ammunition & stores: 2,233 tons, 11.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   24,353 lbs / 11,046 Kg = 28.2 x 12.0 " / 305 mm shells or 3.2 torpedoes
 Stability (Unstable if below 1.00): 1.36
 Metacentric height 6.2 ft / 1.9 m
 Roll period: 13.5 seconds
 Steadiness - As gun platform (Average = 50 %): 68 %
   - Recoil effect (Restricted arc if above 1.00): 0.32
 Seaboat quality  (Average = 1.00): 1.36

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.487
 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): -2.00 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 (61 %):  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: 22.12 ft / 6.74 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 134.1 %
  - Above water (accommodation/working, high = better): 191.6 %
 Waterplane Area: 36,866 Square feet or 3,425 Square metres
 Displacement factor (Displacement / loading): 108 %
 Structure weight / hull surface area: 133 lbs/sq ft or 650 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

A new version of the Ger/BB/1905 design

I have a new version of the Ger/BB/1905 design that is based on a good set of specifications. The only thing that is abnormal is setting the machinery date to 1909 to obtain a higher power output for a given machinery weight. This is a ship that was intended to be 580ft x 90ft x 26.6ft with a displacement of 22,000 tons. The armement is 8-12in/45 BLR and 12-4in QF guns. The armor basis is 10 inches. This is the new Springsharp report:

Ger/BB/1905, Germany Battleship laid down 1905 (Engine 1909)

Displacement:
 19,477 t light; 20,246 t standard; 22,000 t normal; 23,404 t full load

Dimensions: Length overall / water x beam x draught
 580.00 ft / 580.00 ft x 90.00 ft x 27.00 ft (normal load)
 176.78 m / 176.78 m x 27.43 m  x 8.23 m

Armament:
      8 - 12.00" / 305 mm guns (4x2 guns), 864.00lbs / 391.90kg shells, 1905 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
   Quick firing guns in casemate mounts 
   on side, evenly spread
 Weight of broadside 7,296 lbs / 3,309 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 10.0" / 254 mm 380.00 ft / 115.82 m 9.00 ft / 2.74 m
 Ends: 26.0" / 660 mm   26.00 ft / 7.92 m 26.00 ft / 7.92 m
   174.00 ft / 53.04 m Unarmoured ends
 Upper: 7.00" / 178 mm 380.00 ft / 115.82 m 8.00 ft / 2.44 m
   Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 380.00 ft / 115.82 m 26.00 ft / 7.92 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 10.0" / 254 mm 7.00" / 178 mm  10.0" / 254 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 10.00" / 254 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 40,318 shp / 30,077 Kw = 23.00 kts
 Range 4,800nm at 15.00 kts
 Bunker at max displacement = 3,158 tons

Complement:
 903 - 1,174

Cost:
 £1.704 million / $6.817 million

Distribution of weights at normal displacement:
 Armament: 912 tons, 4.1 %
 Armour: 8,019 tons, 36.4 %
    - Belts: 3,063 tons, 13.9 %
    - Torpedo bulkhead: 731 tons, 3.3 %
    - Armament: 2,040 tons, 9.3 %
    - Armour Deck: 2,015 tons, 9.2 %
    - Conning Tower: 169 tons, 0.8 %
 Machinery: 1,833 tons, 8.3 %
 Hull, fittings & equipment: 8,714 tons, 39.6 %
 Fuel, ammunition & stores: 2,523 tons, 11.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   41,772 lbs / 18,947 Kg = 48.3 x 12.0 " / 305 mm shells or 7.7 torpedoes
 Stability (Unstable if below 1.00): 1.05
 Metacentric height 4.7 ft / 1.4 m
 Roll period: 17.4 seconds
 Steadiness - As gun platform (Average = 50 %): 87 %
   - Recoil effect (Restricted arc if above 1.00): 0.78
 Seaboat quality  (Average = 1.00): 1.74

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.546
 Length to Beam Ratio: 6.44 : 1
 'Natural speed' for length: 24.08 kts
 Power going to wave formation at top speed: 47 %
 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:  29.00 ft / 8.84 m
    - Forecastle (20 %): 27.00 ft / 8.23 m
    - Mid (67 %):  27.00 ft / 8.23 m (19.00 ft / 5.79 m aft of break)
    - Quarterdeck (15 %): 19.00 ft / 5.79 m
    - Stern:  19.00 ft / 5.79 m
    - Average freeboard: 24.52 ft / 7.47 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 75.2 %
  - Above water (accommodation/working, high = better): 189.8 %
 Waterplane Area: 36,305 Square feet or 3,373 Square metres
 Displacement factor (Displacement / loading): 116 %
 Structure weight / hull surface area: 163 lbs/sq ft or 795 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.93
  - Longitudinal: 1.99
  - 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 Ger/BB/1907 design

I just ran the Ger/BB/1907 design in Springsharp. The ship had to be somewhat larger, but the main issue was hull strength. That motivated a deeper draft, to achieve more hull depth, and greater displacement to add strength. This is the Springsharp report:

Ger/BB/1907, Germany Battleship laid down 1907 (Engine 1909)

Displacement:
 23,830 t light; 24,684 t standard; 26,250 t normal; 27,503 t full load

Dimensions: Length overall / water x beam x draught
 620.00 ft / 620.00 ft x 105.00 ft x 32.00 ft (normal load)
 188.98 m / 188.98 m x 32.00 m  x 9.75 m

Armament:
      8 - 12.00" / 305 mm guns (4x2 guns), 864.00lbs / 391.90kg shells, 1907 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1907 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread
 Weight of broadside 7,296 lbs / 3,309 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 13.0" / 330 mm 400.00 ft / 121.92 m 9.00 ft / 2.74 m
 Ends: Unarmoured
 Upper: 8.00" / 203 mm 400.00 ft / 121.92 m 8.00 ft / 2.44 m
   Main Belt covers 99 % of normal length

   - Torpedo Bulkhead:
  1.50" / 38 mm 400.00 ft / 121.92 m 27.00 ft / 8.23 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 13.0" / 330 mm 10.0" / 254 mm  13.0" / 330 mm
 2nd: 2.00" / 51 mm       -         -

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

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 50,116 shp / 37,387 Kw = 24.00 kts
 Range 4,500nm at 14.00 kts
 Bunker at max displacement = 2,819 tons

Complement:
 1,030 - 1,340

Cost:
 £1.919 million / $7.676 million

Distribution of weights at normal displacement:
 Armament: 912 tons, 3.5 %
 Armour: 9,813 tons, 37.4 %
    - Belts: 3,161 tons, 12.0 %
    - Torpedo bulkhead: 599 tons, 2.3 %
    - Armament: 2,755 tons, 10.5 %
    - Armour Deck: 3,051 tons, 11.6 %
    - Conning Tower: 247 tons, 0.9 %
 Machinery: 2,278 tons, 8.7 %
 Hull, fittings & equipment: 10,827 tons, 41.2 %
 Fuel, ammunition & stores: 2,420 tons, 9.2 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   53,442 lbs / 24,241 Kg = 61.9 x 12.0 " / 305 mm shells or 10.1 torpedoes
 Stability (Unstable if below 1.00): 1.02
 Metacentric height 5.6 ft / 1.7 m
 Roll period: 18.6 seconds
 Steadiness - As gun platform (Average = 50 %): 100 %
   - Recoil effect (Restricted arc if above 1.00): 0.60
 Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.441
 Length to Beam Ratio: 5.90 : 1
 'Natural speed' for length: 24.90 kts
 Power going to wave formation at top speed: 46 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -1.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  31.00 ft / 9.45 m
    - Forecastle (20 %): 29.00 ft / 8.84 m
    - Mid (68 %):  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: 26.60 ft / 8.11 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 67.7 %
  - Above water (accommodation/working, high = better): 205.1 %
 Waterplane Area: 41,227 Square feet or 3,830 Square metres
 Displacement factor (Displacement / loading): 121 %
 Structure weight / hull surface area: 177 lbs/sq ft or 867 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.90
  - Longitudinal: 2.52
  - 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

A good version of the Ger/BB/1909A battleship design

With what I now know about Springsharp, the Ger/BB/1909A design came out quite well. The drawing and specifications were probably from 1973, as the drawing is done in that style. The ship comes out quite fast, as the size is such that the armor is not that significant. Admittedly, the machinery is fairly light for the power. The armament is 9-12in/50 BLR and 8-6in/50 QF. The speed is 27 knots. The displacement is 33,500 tons. This is the Springsharp report:

Ger/BB/1909A, Enter country Enter ship type laid down 1909 (Engine 1917)

Displacement:
 29,893 t light; 31,003 t standard; 33,500 t normal; 35,498 t full load

Dimensions: Length overall / water x beam x draught
 645.00 ft / 645.00 ft x 106.00 ft x 30.00 ft (normal load)
 196.60 m / 196.60 m x 32.31 m  x 9.14 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 ends, majority forward, 1 raised mount - superfiring
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1909 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread
 Weight of broadside 8,640 lbs / 3,919 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 14.0" / 356 mm 450.00 ft / 137.16 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 107 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 450.00 ft / 137.16 m 28.00 ft / 8.53 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: 2.00" / 51 mm       -         -

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

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 96,329 shp / 71,861 Kw = 27.00 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 4,495 tons

Complement:
 1,237 - 1,609

Cost:
 £2.448 million / $9.791 million

Distribution of weights at normal displacement:
 Armament: 1,080 tons, 3.2 %
 Armour: 13,134 tons, 39.2 %
    - Belts: 4,625 tons, 13.8 %
    - Torpedo bulkhead: 932 tons, 2.8 %
    - Armament: 2,759 tons, 8.2 %
    - Armour Deck: 4,504 tons, 13.4 %
    - Conning Tower: 313 tons, 0.9 %
 Machinery: 3,531 tons, 10.5 %
 Hull, fittings & equipment: 12,148 tons, 36.3 %
 Fuel, ammunition & stores: 3,607 tons, 10.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   63,900 lbs / 28,985 Kg = 74.0 x 12.0 " / 305 mm shells or 11.2 torpedoes
 Stability (Unstable if below 1.00): 1.14
 Metacentric height 7.0 ft / 2.1 m
 Roll period: 16.8 seconds
 Steadiness - As gun platform (Average = 50 %): 70 %
   - Recoil effect (Restricted arc if above 1.00): 0.42
 Seaboat quality  (Average = 1.00): 1.40

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.572
 Length to Beam Ratio: 6.08 : 1
 'Natural speed' for length: 25.40 kts
 Power going to wave formation at top speed: 54 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  32.00 ft / 9.75 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: 26.60 ft / 8.11 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 72.9 %
  - Above water (accommodation/working, high = better): 200.8 %
 Waterplane Area: 48,694 Square feet or 4,524 Square metres
 Displacement factor (Displacement / loading): 116 %
 Structure weight / hull surface area: 176 lbs/sq ft or 857 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.92
  - Longitudinal: 1.98
  - 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 Ger/CB/1915 design study

There is a drawing and armor specifications for a battlecruiser in the series with my other designs for ships with two, superimposed triple turrets forward. The idea was always to shorten the citidel length, although Springsharp may not support this very much. The armor basis for this design is 12in and the speed is 33 knots. The ship has a tower foremast and three funnels. The hull steps down at about 74%. This is the Springsharp report:

Ger/CB/1915, Germany Battlecruiser laid down 1915 (Engine 1929)

Displacement:
 42,800 t light; 44,432 t standard; 48,300 t normal; 51,394 t full load

Dimensions: Length overall / water x beam x draught
 901.78 ft / 900.00 ft x 100.00 ft x 32.00 ft (normal load)
 274.86 m / 274.32 m x 30.48 m  x 9.75 m

Armament:
      6 - 16.50" / 419 mm guns (2x3 guns), 2,246.06lbs / 1,018.80kg shells, 1915 Model
   Breech loading guns in turrets (on barbettes)
   on centreline, all forward, 1 raised mount - superfiring
      12 - 6.00" / 152 mm guns (4x3 guns), 108.00lbs / 48.99kg shells, 1915 Model
   Quick firing guns in turrets (on barbettes)
   on side, all aft
 Weight of broadside 14,772 lbs / 6,701 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 12.0" / 305 mm 620.00 ft / 188.98 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 106 % of normal length

   - Torpedo Bulkhead:
  1.50" / 38 mm 620.00 ft / 188.98 m 27.00 ft / 8.23 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 12.0" / 305 mm 9.00" / 229 mm  12.0" / 305 mm
 2nd: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 8.00" / 203 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 225,875 shp / 168,503 Kw = 33.00 kts
 Range 7,500nm at 18.00 kts
 Bunker at max displacement = 6,963 tons

Complement:
 1,628 - 2,117

Cost:
 £5.848 million / $23.391 million

Distribution of weights at normal displacement:
 Armament: 1,847 tons, 3.8 %
 Armour: 14,452 tons, 29.9 %
    - Belts: 5,285 tons, 10.9 %
    - Torpedo bulkhead: 929 tons, 1.9 %
    - Armament: 3,197 tons, 6.6 %
    - Armour Deck: 4,812 tons, 10.0 %
    - Conning Tower: 229 tons, 0.5 %
 Machinery: 6,937 tons, 14.4 %
 Hull, fittings & equipment: 19,564 tons, 40.5 %
 Fuel, ammunition & stores: 5,500 tons, 11.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   70,531 lbs / 31,992 Kg = 31.4 x 16.5 " / 419 mm shells or 8.6 torpedoes
 Stability (Unstable if below 1.00): 1.10
 Metacentric height 6.0 ft / 1.8 m
 Roll period: 17.2 seconds
 Steadiness - As gun platform (Average = 50 %): 64 %
   - Recoil effect (Restricted arc if above 1.00): 0.83
 Seaboat quality  (Average = 1.00): 1.29

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.587
 Length to Beam Ratio: 9.00 : 1
 'Natural speed' for length: 30.00 kts
 Power going to wave formation at top speed: 51 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  34.00 ft / 10.36 m
    - Forecastle (20 %): 30.00 ft / 9.14 m
    - Mid (74 %):  30.00 ft / 9.14 m (22.00 ft / 6.71 m aft of break)
    - Quarterdeck (15 %): 22.00 ft / 6.71 m
    - Stern:  22.00 ft / 6.71 m
    - Average freeboard: 28.24 ft / 8.61 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 94.3 %
  - Above water (accommodation/working, high = better): 217.9 %
 Waterplane Area: 65,027 Square feet or 6,041 Square metres
 Displacement factor (Displacement / loading): 112 %
 Structure weight / hull surface area: 201 lbs/sq ft or 983 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.31
  - 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 faster version of the BBX with 18in guns

I have a pencil inboard profile of my friend Cliff's design for the BBX (GB/BB/1915) super battleship. This version had a higher speed (28.3 knots with 179,000 SHP). The Springsharp power calculation came out very close to this (178,317 SHP), which is pretty amazing, considering that the early 1970's calculation was based on SHP/ton of displacement and Speed-Length ratios measured from not very good data about real ships. This is the Springsharp report:

GB/BB/1915 BBX, Great Britain Battleship laid down 1915 (Engine 1927)

Displacement:
 65,488 t light; 68,448 t standard; 71,500 t normal; 73,941 t full load

Dimensions: Length overall / water x beam x draught
 801.22 ft / 800.00 ft x 135.00 ft x 35.50 ft (normal load)
 244.21 m / 243.84 m x 41.15 m  x 10.82 m

Armament:
      9 - 18.00" / 457 mm guns (3x3 guns), 3,200.00lbs / 1,451.50kg shells, 1915 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      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 amidships, 4 raised mounts - superfiring
 Weight of broadside 30,300 lbs / 13,744 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 18.0" / 457 mm 540.00 ft / 164.59 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 104 % of normal length

   - Torpedo Bulkhead:
  4.00" / 102 mm 540.00 ft / 164.59 m 33.00 ft / 10.06 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, 178,317 shp / 133,024 Kw = 28.30 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 5,493 tons

Complement:
 2,186 - 2,842

Cost:
 £8.717 million / $34.870 million

Distribution of weights at normal displacement:
 Armament: 3,468 tons, 4.9 %
 Armour: 29,523 tons, 41.3 %
    - Belts: 7,257 tons, 10.1 %
    - Torpedo bulkhead: 2,637 tons, 3.7 %
    - Armament: 6,686 tons, 9.4 %
    - Armour Deck: 12,275 tons, 17.2 %
    - Conning Tower: 668 tons, 0.9 %
 Machinery: 5,629 tons, 7.9 %
 Hull, fittings & equipment: 26,868 tons, 37.6 %
 Fuel, ammunition & stores: 6,012 tons, 8.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   114,341 lbs / 51,864 Kg = 39.2 x 18.0 " / 457 mm shells or 22.5 torpedoes
 Stability (Unstable if below 1.00): 1.15
 Metacentric height 10.3 ft / 3.1 m
 Roll period: 17.7 seconds
 Steadiness - As gun platform (Average = 50 %): 57 %
   - Recoil effect (Restricted arc if above 1.00): 0.49
 Seaboat quality  (Average = 1.00): 1.15

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.653
 Length to Beam Ratio: 5.93 : 1
 'Natural speed' for length: 28.28 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: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  35.00 ft / 10.67 m
    - Forecastle (20 %): 26.00 ft / 7.92 m
    - Mid (50 %):  26.00 ft / 7.92 m
    - Quarterdeck (15 %): 26.00 ft / 7.92 m
    - Stern:  26.00 ft / 7.92 m
    - Average freeboard: 26.72 ft / 8.14 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 73.4 %
  - Above water (accommodation/working, high = better): 187.9 %
 Waterplane Area: 82,940 Square feet or 7,705 Square metres
 Displacement factor (Displacement / loading): 104 %
 Structure weight / hull surface area: 246 lbs/sq ft or 1,202 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

A better version of the Ger/BB/1915 alternative design

I had drawn a picture and supplied specifications for a version of the Ger/BB/1915 battleship design with a more normal draft. The displacement had to rise about the 60,000 tons that was proposed. The issue was structural strength. To carry an 18in armor basis with 9-18in guns created the need for stronger hull and more displacement. This is the SpringSharp report:

Ger/BB/1915 Alt.2, Germany Enter ship type laid down 1915

Displacement:
 57,358 t light; 59,894 t standard; 64,000 t normal; 67,285 t full load

Dimensions: Length overall / water x beam x draught
 751.83 ft / 750.00 ft x 130.00 ft x 34.00 ft (normal load)
 229.16 m / 228.60 m x 39.62 m  x 10.36 m

Armament:
      9 - 18.00" / 457 mm guns (3x3 guns), 2,916.00lbs / 1,322.68kg shells, 1915 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1915 Model
   Breech loading guns in turrets (on barbettes)
   on side, all amidships, 4 raised mounts - superfiring
 Weight of broadside 27,972 lbs / 12,688 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 18.0" / 457 mm 490.00 ft / 149.35 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
  4.00" / 102 mm 490.00 ft / 149.35 m 32.00 ft / 9.75 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: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm

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

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 45,638 shp / 34,046 Kw = 20.00 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 7,391 tons

Complement:
 2,011 - 2,615

Cost:
 £7.544 million / $30.177 million

Distribution of weights at normal displacement:
 Armament: 3,497 tons, 5.5 %
 Armour: 27,820 tons, 43.5 %
    - Belts: 6,669 tons, 10.4 %
    - Torpedo bulkhead: 2,321 tons, 3.6 %
    - Armament: 6,893 tons, 10.8 %
    - Armour Deck: 11,316 tons, 17.7 %
    - Conning Tower: 620 tons, 1.0 %
 Machinery: 1,729 tons, 2.7 %
 Hull, fittings & equipment: 24,313 tons, 38.0 %
 Fuel, ammunition & stores: 6,642 tons, 10.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   128,835 lbs / 58,438 Kg = 44.2 x 18.0 " / 457 mm shells or 29.3 torpedoes
 Stability (Unstable if below 1.00): 1.10
 Metacentric height 8.9 ft / 2.7 m
 Roll period: 18.3 seconds
 Steadiness - As gun platform (Average = 50 %): 87 %
   - Recoil effect (Restricted arc if above 1.00): 0.72
 Seaboat quality  (Average = 1.00): 1.73

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.676
 Length to Beam Ratio: 5.77 : 1
 'Natural speed' for length: 27.39 kts
 Power going to wave formation at top speed: 38 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  35.00 ft / 10.67 m
    - Forecastle (20 %): 27.00 ft / 8.23 m
    - Mid (50 %):  27.00 ft / 8.23 m
    - Quarterdeck (15 %): 27.00 ft / 8.23 m
    - Stern:  27.00 ft / 8.23 m
    - Average freeboard: 27.64 ft / 8.42 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 59.1 %
  - Above water (accommodation/working, high = better): 195.5 %
 Waterplane Area: 76,461 Square feet or 7,103 Square metres
 Displacement factor (Displacement / loading): 108 %
 Structure weight / hull surface area: 240 lbs/sq ft or 1,171 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.77
  - 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

German Armoured Cruiser: Ger/CA/1906

The date is just guesswork, but the ship otherwise matches that period, except for triple turrets. This is a ship of 550ft x 80ft x 26ft with 6-12in/45 BLR and 8-6in QF guns. The 6in guns are in barbettes. The 12in guns are in two triple turrets, one forward and one aft. The armour basis is 6in with a 3in deck. The thick deck armour caused the displacement to be greater than planned: 18,100 tons normal rather than 16,860 tons. The speed is 25 knots, so it is almost a battlecruiser. This is the Springsharp report:

Ger/CA/1906, Germany Armoured Cruiser laid down 1906

Displacement:
 15,742 t light; 16,379 t standard; 18,100 t normal; 19,476 t full load

Dimensions: Length overall / water x beam x draught
 550.00 ft / 550.00 ft x 80.00 ft x 26.00 ft (normal load)
 167.64 m / 167.64 m x 24.38 m  x 7.92 m

Armament:
      6 - 12.00" / 305 mm guns (2x3 guns), 864.00lbs / 391.90kg shells, 1906 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, 1906 Model
   Quick firing guns in casemate mounts 
   on side, evenly spread
   8 guns in hull casemates - Limited use in heavy seas
 Weight of broadside 6,048 lbs / 2,743 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 420.00 ft / 128.02 m 16.00 ft / 4.88 m
 Ends: 4.00" / 102 mm 130.00 ft / 39.62 m 12.00 ft / 3.66 m
   Main Belt covers 117 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.60" / 41 mm 420.00 ft / 128.02 m 23.00 ft / 7.01 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 8.00" / 203 mm 4.00" / 102 mm  6.00" / 152 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

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

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 50,110 shp / 37,382 Kw = 25.00 kts
 Range 4,500nm at 15.00 kts
 Bunker at max displacement = 3,097 tons

Complement:
 779 - 1,014

Cost:
 £1.642 million / $6.566 million

Distribution of weights at normal displacement:
 Armament: 756 tons, 4.2 %
 Armour: 5,071 tons, 28.0 %
    - Belts: 1,917 tons, 10.6 %
    - Torpedo bulkhead: 572 tons, 3.2 %
    - Armament: 782 tons, 4.3 %
    - Armour Deck: 1,710 tons, 9.4 %
    - Conning Tower: 89 tons, 0.5 %
 Machinery: 3,254 tons, 18.0 %
 Hull, fittings & equipment: 6,662 tons, 36.8 %
 Fuel, ammunition & stores: 2,358 tons, 13.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   24,208 lbs / 10,980 Kg = 28.0 x 12.0 " / 305 mm shells or 3.4 torpedoes
 Stability (Unstable if below 1.00): 1.24
 Metacentric height 5.3 ft / 1.6 m
 Roll period: 14.6 seconds
 Steadiness - As gun platform (Average = 50 %): 78 %
   - Recoil effect (Restricted arc if above 1.00): 0.60
 Seaboat quality  (Average = 1.00): 1.56

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.554
 Length to Beam Ratio: 6.88 : 1
 'Natural speed' for length: 23.45 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:  28.00 ft / 8.53 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: 23.52 ft / 7.17 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 119.4 %
  - Above water (accommodation/working, high = better): 179.2 %
 Waterplane Area: 30,816 Square feet or 2,863 Square metres
 Displacement factor (Displacement / loading): 103 %
 Structure weight / hull surface area: 142 lbs/sq ft or 691 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.92
  - Longitudinal: 2.11
  - 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