Ger/BB/1915 A0, Germany Battleship laid down 1915 Displacement: 54,583 t light; 57,059 t standard; 61,475 t normal; 65,008 t full load Dimensions: Length overall / water x beam x draught 751.22 ft / 750.00 ft x 130.00 ft x 36.00 ft (normal load) 228.97 m / 228.60 m x 39.62 m x 10.97 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, all raised mounts - superfiring Main guns limited to end-on fire 24 - 5.00" / 127 mm guns (2x12 guns), 62.50lbs / 28.35kg shells, 1915 Model Quick firing guns in turrets (on barbettes) on side, evenly spread, all raised mounts Weight of broadside 27,744 lbs / 12,584 kg Shells per gun, main battery: 80 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 16.0" / 406 mm 400.00 ft / 121.92 m 16.00 ft / 4.88 m Ends: Unarmoured Main Belt covers 82 % of normal length - Torpedo Bulkhead: 2.50" / 64 mm 400.00 ft / 121.92 m 32.00 ft / 9.75 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 16.0" / 406 mm 8.00" / 203 mm 15.0" / 381 mm 2nd: 2.00" / 51 mm 2.00" / 51 mm 2.00" / 51 mm - Armour deck: 7.00" / 178 mm, Conning tower: 16.00" / 406 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 4 shafts, 72,903 shp / 54,386 Kw = 23.00 kts Range 8,500nm at 15.00 kts Bunker at max displacement = 7,949 tons Complement: 1,951 - 2,537 Cost: £7.578 million / $30.314 million Distribution of weights at normal displacement: Armament: 3,468 tons, 5.6 % Armour: 21,880 tons, 35.6 % - Belts: 4,781 tons, 7.8 % - Torpedo bulkhead: 1,184 tons, 1.9 % - Armament: 6,030 tons, 9.8 % - Armour Deck: 9,347 tons, 15.2 % - Conning Tower: 537 tons, 0.9 % Machinery: 2,761 tons, 4.5 % Hull, fittings & equipment: 26,474 tons, 43.1 % Fuel, ammunition & stores: 6,892 tons, 11.2 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 107,694 lbs / 48,849 Kg = 36.9 x 18.0 " / 457 mm shells or 19.3 torpedoes Stability (Unstable if below 1.00): 1.00 Metacentric height 7.4 ft / 2.3 m Roll period: 20.1 seconds Steadiness - As gun platform (Average = 50 %): 92 % - Recoil effect (Restricted arc if above 1.00): 1.09 Seaboat quality (Average = 1.00): 1.83 Hull form characteristics: Hull has a flush deck Block coefficient: 0.613 Length to Beam Ratio: 5.77 : 1 'Natural speed' for length: 27.39 kts Power going to wave formation at top speed: 44 % 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 %): 30.00 ft / 9.14 m - Mid (0 %): 30.00 ft / 9.14 m - Quarterdeck (15 %): 30.00 ft / 9.14 m - Stern: 30.00 ft / 9.14 m - Average freeboard: 30.40 ft / 9.27 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 67.4 % - Above water (accommodation/working, high = better): 211.4 % Waterplane Area: 72,180 Square feet or 6,706 Square metres Displacement factor (Displacement / loading): 111 % Structure weight / hull surface area: 265 lbs/sq ft or 1,296 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.92 - Longitudinal: 2.15 - 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
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Sunday, January 09, 2005
I could make the 60,000 ton Ger/BB/1915 work with little problem, as well
I thought I would see what happened with a nominally 60,000 ton version of the Ger/BB/1915, as that was what I had originally envisioned. I wasn't able to do 60,000 tons, but I was able to make 61,475 tons work, and still get 23 knots. I had been happy to get 20 knots, so 23 knots is gravy. Remember that this is a ship with 9-18in/45 and 24-5in/50 guns.
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