Ger/BB/1916, Germany Battleship laid down 1916 (Engine 1927) Displacement: 61,391 t light; 64,163 t standard; 68,510 t normal; 71,987 t full load Dimensions: Length overall / water x beam x draught 763.01 ft / 760.00 ft x 132.00 ft x 37.00 ft (normal load) 232.57 m / 231.65 m x 40.23 m x 11.28 m Armament: 9 - 18.00" / 457 mm guns (3x3 guns), 2,916.00lbs / 1,322.68kg shells, 1916 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, all raised mounts - superfiring 24 - 5.00" / 127 mm guns (12x2 guns), 62.50lbs / 28.35kg shells, 1916 Model Quick firing guns in deck mounts with hoists on side, evenly spread, all raised mounts Weight of broadside 27,744 lbs / 12,584 kg Shells per gun, main battery: 90 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 18.0" / 457 mm 575.00 ft / 175.26 m 17.00 ft / 5.18 m Ends: Unarmoured Main Belt covers 116 % of normal length - Torpedo Bulkhead: 3.00" / 76 mm 575.00 ft / 175.26 m 34.00 ft / 10.36 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 18.0" / 457 mm 10.0" / 254 mm 18.0" / 457 mm 2nd: 2.00" / 51 mm - - - Armour deck: 8.00" / 203 mm, Conning tower: 12.00" / 305 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 4 shafts, 146,312 shp / 109,149 Kw = 27.00 kts Range 10,000nm at 15.00 kts Bunker at max displacement = 7,824 tons Complement: 2,116 - 2,752 Cost: £9.341 million / $37.364 million Distribution of weights at normal displacement: Armament: 3,468 tons, 5.1 % Armour: 27,475 tons, 40.1 % - Belts: 7,532 tons, 11.0 % - Torpedo bulkhead: 2,170 tons, 3.2 % - Armament: 6,007 tons, 8.8 % - Armour Deck: 11,332 tons, 16.5 % - Conning Tower: 433 tons, 0.6 % Machinery: 4,618 tons, 6.7 % Hull, fittings & equipment: 25,830 tons, 37.7 % Fuel, ammunition & stores: 7,119 tons, 10.4 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 105,427 lbs / 47,821 Kg = 36.2 x 18.0 " / 457 mm shells or 20.6 torpedoes Stability (Unstable if below 1.00): 1.06 Metacentric height 8.6 ft / 2.6 m Roll period: 18.9 seconds Steadiness - As gun platform (Average = 50 %): 56 % - Recoil effect (Restricted arc if above 1.00): 0.59 Seaboat quality (Average = 1.00): 1.13 Hull form characteristics: Hull has a flush deck Block coefficient: 0.646 Length to Beam Ratio: 5.76 : 1 'Natural speed' for length: 27.57 kts Power going to wave formation at top speed: 53 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 2.00 degrees Stern overhang: 2.00 ft / 0.61 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 29.00 ft / 8.84 m - Forecastle (0 %): 25.00 ft / 7.62 m - Mid (0 %): 25.00 ft / 7.62 m - Quarterdeck (15 %): 25.00 ft / 7.62 m - Stern: 25.00 ft / 7.62 m - Average freeboard: 25.00 ft / 7.62 m Ship tends to be wet forward Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 71.0 % - Above water (accommodation/working, high = better): 172.3 % Waterplane Area: 76,569 Square feet or 7,114 Square metres Displacement factor (Displacement / loading): 106 % Structure weight / hull surface area: 255 lbs/sq ft or 1,243 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.95 - Longitudinal: 1.62 - Overall: 1.00 Hull space for machinery, storage, compartmentation is excellent Room for accommodation and workspaces is excellent
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Wednesday, February 02, 2005
My answer to the GB/BB/1914: the Ger/BB/1916
I would have built these in numbers to contest the North Sea and Channel against what the British were building. This is the original concept, with 9-18in BLR and 24-5in QF guns. It has the thick armor, as in the original, but higher speed. I wanted a good mix of stability, hull strength, and seakeeping ability, and this is what resulted (from my 1971 notes):
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