Ger/CB/1942, Germany Battlecruiser laid down 1942 Displacement: 106,793 t light; 111,431 t standard; 120,000 t normal; 126,856 t full load Dimensions: Length overall / water x beam x draught 1,184.66 ft / 1,180.00 ft x 147.00 ft x 37.00 ft (normal load) 361.08 m / 359.66 m x 44.81 m x 11.28 m Armament: 9 - 21.00" / 533 mm guns (3x3 guns), 4,630.50lbs / 2,100.36kg shells, 1942 Model Breech loading guns in turrets (on barbettes) on side ends, majority forward, 1 raised mount - superfiring 18 - 6.00" / 152 mm guns (6x3 guns), 108.00lbs / 48.99kg shells, 1942 Model Quick firing guns in turrets (on barbettes) on side, all amidships 18 - 4.00" / 102 mm guns (6x3 guns), 32.00lbs / 14.51kg shells, 1942 Model Anti-aircraft guns in turrets (on barbettes) on side ends, evenly spread, all raised mounts - superfiring 28 - 1.57" / 40.0 mm guns (7x4 guns), 1.95lbs / 0.89kg shells, 1942 Model Anti-aircraft guns in deck mounts on side, evenly spread, 2 raised mounts 6 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1942 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts Weight of broadside 44,251 lbs / 20,072 kg Shells per gun, main battery: 90 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 12.0" / 305 mm 780.00 ft / 237.74 m 17.00 ft / 5.18 m Ends: Unarmoured Main Belt covers 102 % of normal length - Torpedo Bulkhead: 4.00" / 102 mm 780.00 ft / 237.74 m 36.00 ft / 10.97 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 16.0" / 406 mm 11.0" / 279 mm 16.0" / 406 mm 2nd: 6.00" / 152 mm 6.00" / 152 mm 6.00" / 152 mm 3rd: 1.00" / 25 mm 1.00" / 25 mm 1.00" / 25 mm 4th: 1.00" / 25 mm - - 5th: 1.00" / 25 mm - - - Armour deck: 7.00" / 178 mm, Conning tower: 16.00" / 406 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 8 shafts, 478,256 shp / 356,779 Kw = 35.00 kts Range 10,500nm at 18.00 kts Bunker at max displacement = 15,425 tons Complement: 3,222 - 4,190 Cost: £64.484 million / $257.935 million Distribution of weights at normal displacement: Armament: 5,531 tons, 4.6 % Armour: 36,529 tons, 30.4 % - Belts: 6,790 tons, 5.7 % - Torpedo bulkhead: 4,156 tons, 3.5 % - Armament: 7,467 tons, 6.2 % - Armour Deck: 17,278 tons, 14.4 % - Conning Tower: 839 tons, 0.7 % Machinery: 12,494 tons, 10.4 % Hull, fittings & equipment: 52,239 tons, 43.5 % Fuel, ammunition & stores: 13,207 tons, 11.0 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 184,951 lbs / 83,892 Kg = 39.9 x 21.0 " / 533 mm shells or 33.6 torpedoes Stability (Unstable if below 1.00): 1.26 Metacentric height 13.5 ft / 4.1 m Roll period: 16.8 seconds Steadiness - As gun platform (Average = 50 %): 52 % - Recoil effect (Restricted arc if above 1.00): 0.44 Seaboat quality (Average = 1.00): 1.05 Hull form characteristics: Hull has a flush deck Block coefficient: 0.654 Length to Beam Ratio: 8.03 : 1 'Natural speed' for length: 34.35 kts Power going to wave formation at top speed: 50 % 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: 38.00 ft / 11.58 m - Forecastle (20 %): 28.00 ft / 8.53 m - Mid (50 %): 28.00 ft / 8.53 m - Quarterdeck (15 %): 28.00 ft / 8.53 m - Stern: 28.00 ft / 8.53 m - Average freeboard: 28.80 ft / 8.78 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 79.5 % - Above water (accommodation/working, high = better): 220.8 % Waterplane Area: 133,418 Square feet or 12,395 Square metres Displacement factor (Displacement / loading): 113 % Structure weight / hull surface area: 301 lbs/sq ft or 1,468 Kg/sq metre Hull strength (Relative): - Cross-sectional: 1.15 - Longitudinal: 0.96 - Overall: 1.00 Hull space for machinery, storage, compartmentation is excellent Room for accommodation and workspaces is excellent
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Saturday, October 15, 2005
A 1942 German very large battlecruiser
I have a sketch and specification for a very large German battlecruiser. I date it as 1942. The specification originally gave the ship a 46ft-2in draft, which I have greatly reduced, as a large draft is too great of a problem. The basic specification is for a 35-knot ship of 120,000 tons normal displacement. The main armament is the usual 9-21in guns. In this case, the secondary armament is single-purpose, being 18-6in QF guns in six triple turrets. The heavy AA armament is 18-4in AA guns in triple mounts, as well. The light AA is substandard with only 28-40mm and 6-20mm. The belt is only 12in. The armament has 16in armor, however. This is the Springsharp report:
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