Ger/BB/1917, Germany Battleship laid down 1917 (Engine 1927)
Displacement:
96,451 t light; 100,375 t standard; 105,000 t normal; 108,700 t full load
Dimensions: Length overall / water x beam x draught
1,089.24 ft / 1,085.00 ft x 140.00 ft x 34.00 ft (normal load)
332.00 m / 330.71 m x 42.67 m x 10.36 m
Armament:
9 - 19.75" / 502 mm guns (3x3 guns), 3,851.87lbs / 1,747.18kg shells, 1917 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, 1917 Model
Quick firing guns in turrets (on barbettes)
on side, all amidships, 4 raised mounts - superfiring
Weight of broadside 36,167 lbs / 16,405 kg
Shells per gun, main battery: 90
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 18.0" / 457 mm 650.00 ft / 198.12 m 17.00 ft / 5.18 m
Ends: Unarmoured
Main Belt covers 92 % of normal length
- Torpedo Bulkhead:
7.00" / 178 mm 650.00 ft / 198.12 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: 7.00" / 178 mm, Conning tower: 18.00" / 457 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 280,433 shp / 209,203 Kw = 30.70 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 8,326 tons
Complement:
2,916 - 3,791
Cost:
£15.296 million / $61.183 million
Distribution of weights at normal displacement:
Armament: 4,521 tons, 4.3 %
Armour: 38,388 tons, 36.6 %
- Belts: 8,702 tons, 8.3 %
- Torpedo bulkhead: 5,556 tons, 5.3 %
- Armament: 7,337 tons, 7.0 %
- Armour Deck: 15,930 tons, 15.2 %
- Conning Tower: 863 tons, 0.8 %
Machinery: 8,852 tons, 8.4 %
Hull, fittings & equipment: 44,690 tons, 42.6 %
Fuel, ammunition & stores: 8,549 tons, 8.1 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
182,463 lbs / 82,764 Kg = 47.4 x 19.8 " / 502 mm shells or 40.4 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 12.4 ft / 3.8 m
Roll period: 16.7 seconds
Steadiness - As gun platform (Average = 50 %): 58 %
- Recoil effect (Restricted arc if above 1.00): 0.43
Seaboat quality (Average = 1.00): 1.16
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.712
Length to Beam Ratio: 7.75 : 1
'Natural speed' for length: 32.94 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 4.00 degrees
Stern overhang: 2.00 ft / 0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 32.00 ft / 9.75 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: 26.48 ft / 8.07 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): 208.9 %
Waterplane Area: 123,010 Square feet or 11,428 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 285 lbs/sq ft or 1,391 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.19
- Longitudinal: 0.94
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
This is a forum for discussion of topics relating to the Dreadnought era, prior to the ascendency of naval aviation. We will be discussing history, ship design, and naval wargaming.
Monday, May 15, 2006
A 105,000 ton battleship design
The next page in the Red Book is a set of specifications, although incomplete, for a 105,000 ton German battleship. Germany is not mentioned, but I believe that there is, elsewhere, a sketch that mentions that fact. The armament is 9-19.75in guns, and I assumed a 24-5in QF gun secondary armament. The only other thing that I worked to achieve was the 280,000 SHP machinery. I had hoped for 31 knots for that power, but Springsharp gave me 30.7 knots, instead, which is quite good, given how I had estimated the power back in the early 1970's. This is the Springsharp report:
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