Ger/CB/1935 16in guns-Alternative, Germany Battlecruiser laid down 1935 Displacement: 43,829 t light; 46,597 t standard; 49,467 t normal; 51,763 t full load Dimensions: Length (overall / waterline) x beam x draught (normal/deep) (829.41 ft / 820.00 ft) x 115.00 ft x (30.00 / 31.15 ft) (252.81 m / 249.94 m) x 35.05 m x (9.14 / 9.50 m) Armament: 9 - 16.00" / 406 mm 50.0 cal guns - 2,170.00lbs / 984.30kg shells, 150 per gun Breech loading guns in turret on barbette mounts , 1935 Model 3 x Triple mounts on centreline ends, majority forward 1 raised mount - superfiring 12 - 6.00" / 152 mm 55.0 cal guns - 115.00lbs / 52.16kg shells, 150 per gun Quick firing guns in deck and hoist mounts , 1935 Model 12 x Single mounts on sides, evenly spread 12 - 4.00" / 102 mm 45.0 cal guns - 32.27lbs / 14.64kg shells, 150 per gun Anti-air guns in deck mount , 1935 Model 1 x Single mount on sides amidships 32 - 1.46" / 37.0 mm 60.0 cal guns - 1.69lbs / 0.77kg shells, 150 per gun Anti-air guns in deck mounts , 1935 Model 8 x Single mounts on sides, evenly spread 7 raised mounts Weight of broadside 21,351 lbs / 21,351 kg Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 14.0" / 356 mm 540.00 ft / 164.59 m 8.00 ft / 2.44 m Ends: Unarmoured Upper: 11.0" / 279 mm 540.00 ft / 164.59 m 8.00 ft / 2.44 m Main Belt covers 101 % of normal length - Torpedo Bulkhead: 4.00" / 102 mm 540.00 ft / 164.59 m 30.00 ft / 9.14 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 14.0" / 356 mm 10.0" / 254 mm 14.0" / 356 mm 2nd: 4.00" / 102 mm 1.00" / 25 mm 4.00" / 102 mm - Armour deck: 4.00" / 102 mm, Conning tower: 14.00" / 356 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 4 shafts, 149,341 shp / 111,409 Kw = 29.00 kts Range 8,500nm at 15.00 kts Bunker at max displacement = 5,166 tons Complement: 1,658 - 2,156 Cost: £22.063 million / $88.252 million Distribution of weights at normal displacement: Armament: 4,060 tons, 8.2 % Armour: 16,433 tons, 33.2 % - Belts: 4,661 tons, 9.4 % - Torpedo bulkhead: 2,398 tons, 4.8 % - Armament: 3,806 tons, 7.7 % - Armour Deck: 5,161 tons, 10.4 % - Conning Tower: 406 tons, 0.8 % Machinery: 4,243 tons, 8.6 % Hull, fittings & equipment: 20,527 tons, 41.5 % Fuel, ammunition & stores: 5,638 tons, 11.4 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 77,822 lbs / 35,300 Kg = 38.0 x 16.0 " / 406 mm shells or 13.6 torpedoes Stability (Unstable if below 1.00): 1.19 Metacentric height 8.6 ft / 2.6 m Roll period: 16.5 seconds Steadiness - As gun platform (Average = 50 %): 62 % - Recoil effect (Restricted arc if above 1.00): 0.61 Seaboat quality (Average = 1.00): 1.25 Hull form characteristics: Hull has a flush deck, a normal bow and a cruiser stern Block coefficient (normal/deep): 0.612 / 0.617 Length to Beam Ratio: 7.13 : 1 'Natural speed' for length: 28.64 kts Power going to wave formation at top speed: 50 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 11.00 degrees Stern overhang: 3.00 ft / 0.91 m Freeboard (% = length of deck as a percentage of waterline length): Fore end, Aft end - Forecastle: 20.00 %, 33.00 ft / 10.06 m, 27.00 ft / 8.23 m - Forward deck: 30.00 %, 27.00 ft / 8.23 m, 24.00 ft / 7.32 m - Aft deck: 30.00 %, 24.00 ft / 7.32 m, 25.00 ft / 7.62 m - Quarter deck: 20.00 %, 25.00 ft / 7.62 m, 26.00 ft / 7.92 m - Average freeboard: 25.98 ft / 7.92 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 84.1 % - Above water (accommodation/working, high = better): 200.3 % Waterplane Area: 69,746 Square feet or 6,480 Square metres Displacement factor (Displacement / loading): 108 % Structure weight / hull surface area: 217 lbs/sq ft or 1,060 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.97 - Longitudinal: 1.30 - 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
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Sunday, April 29, 2007
An alternative design for a 16in-gunned Ger/BB/1935
There are many alternatives in the Ger/BB/1935 family of designs. One is for a narrower 16-in gunned ship. Otherwise, the ship is similar to the other, but has a somewhat longer belt that offers better coverage. This family of designs is more complete, since I have included the light AA guns. This is the Springsharp report:
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