Ger/CB/1912, Germany Battlecruiser laid down 1912 (Engine 1923) Displacement: 34,585 t light; 35,859 t standard; 39,000 t normal; 41,513 t full load Dimensions: Length overall / water x beam x draught 822.00 ft / 820.00 ft x 105.00 ft x 29.40 ft (normal load) 250.55 m / 249.94 m x 32.00 m x 8.96 m Armament: 6 - 15.00" / 381 mm guns (2x3 guns), 1,687.50lbs / 765.44kg shells, 1912 Model Breech loading guns in turrets (on barbettes) on centreline, all 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, all forward, 2 raised mounts - superfiring Weight of broadside 10,989 lbs / 4,985 kg Shells per gun, main battery: 80 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 6.00" / 152 mm 570.00 ft / 173.74 m 17.00 ft / 5.18 m Ends: Unarmoured Main Belt covers 107 % of normal length - Torpedo Bulkhead: 2.00" / 51 mm 570.00 ft / 173.74 m 27.00 ft / 8.23 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 10.0" / 254 mm 6.00" / 152 mm 10.0" / 254 mm 2nd: 2.00" / 51 mm - - - Armour deck: 5.00" / 127 mm, Conning tower: 8.00" / 203 mm Machinery: Oil fired boilers, steam turbines, Direct drive, 4 shafts, 181,614 shp / 135,484 Kw = 32.00 kts Range 6,500nm at 18.00 kts Bunker at max displacement = 5,653 tons Complement: 1,386 - 1,803 Cost: £3.214 million / $12.856 million Distribution of weights at normal displacement: Armament: 1,374 tons, 3.5 % Armour: 11,200 tons, 28.7 % - Belts: 2,450 tons, 6.3 % - Torpedo bulkhead: 1,139 tons, 2.9 % - Armament: 1,910 tons, 4.9 % - Armour Deck: 5,502 tons, 14.1 % - Conning Tower: 198 tons, 0.5 % Machinery: 6,070 tons, 15.6 % Hull, fittings & equipment: 15,941 tons, 40.9 % Fuel, ammunition & stores: 4,415 tons, 11.3 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 59,178 lbs / 26,843 Kg = 35.1 x 15.0 " / 381 mm shells or 8.4 torpedoes Stability (Unstable if below 1.00): 1.21 Metacentric height 7.7 ft / 2.3 m Roll period: 15.9 seconds Steadiness - As gun platform (Average = 50 %): 63 % - Recoil effect (Restricted arc if above 1.00): 0.47 Seaboat quality (Average = 1.00): 1.26 Hull form characteristics: Hull has rise forward of midbreak Block coefficient: 0.539 Length to Beam Ratio: 7.81 : 1 'Natural speed' for length: 28.64 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: 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 (59 %): 30.00 ft / 9.14 m (20.00 ft / 6.10 m aft of break) - Quarterdeck (15 %): 20.00 ft / 6.10 m - Stern: 20.00 ft / 6.10 m - Average freeboard: 26.30 ft / 8.02 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 95.3 % - Above water (accommodation/working, high = better): 212.6 % Waterplane Area: 59,486 Square feet or 5,526 Square metres Displacement factor (Displacement / loading): 114 % Structure weight / hull surface area: 188 lbs/sq ft or 917 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.96 - Longitudinal: 1.40 - 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, July 03, 2005
The Ger/CB/1912 with lower power
The lower power output version of the Ger/CB/1912 design works pretty well in Springsharp. This is the ship of which I have a photo. The design has 6-15in guns forward, in two triple turrets. The secondary armament of 8-6in QF guns is grouped around the forward superstructure, and is in shields. The armour basis is 6 inches. The design speed for a modest power is 32 knots. This is the Springsharp report:
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