Ger/BB/1907, Germany Battleship laid down 1907 (Engine 1914) Displacement: 26,745 t light; 27,721 t standard; 30,292 t normal; 32,349 t full load Dimensions: Length overall / water x beam x draught 620.00 ft / 620.00 ft x 105.00 ft x 34.00 ft (normal load) 188.98 m / 188.98 m x 32.00 m x 10.36 m Armament: 8 - 12.00" / 305 mm guns (4x2 guns), 864.00lbs / 391.90kg shells, 1907 Model Breech loading guns in turrets (on barbettes) on centreline ends, evenly spread, all raised mounts - superfiring 12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1907 Model Quick firing guns in deck mounts with hoists on side, evenly spread, all raised mounts Weight of broadside 7,296 lbs / 3,309 kg Shells per gun, main battery: 90 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 13.0" / 330 mm 480.00 ft / 146.30 m 17.00 ft / 5.18 m Ends: Unarmoured Main Belt covers 119 % of normal length - Torpedo Bulkhead: 2.00" / 51 mm 480.00 ft / 146.30 m 24.00 ft / 7.32 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 11.0" / 279 mm 7.00" / 178 mm 12.0" / 305 mm 2nd: 1.00" / 25 mm - - - Armour deck: 3.50" / 89 mm, Conning tower: 10.00" / 254 mm Machinery: Oil fired boilers, steam turbines, Direct drive, 4 shafts, 117,442 shp / 87,612 Kw = 29.00 kts Range 7,500nm at 15.00 kts Bunker at max displacement = 4,628 tons Complement: 1,147 - 1,492 Cost: £2.336 million / $9.342 million Distribution of weights at normal displacement: Armament: 912 tons, 3.0 % Armour: 10,654 tons, 35.2 % - Belts: 4,432 tons, 14.6 % - Torpedo bulkhead: 852 tons, 2.8 % - Armament: 2,404 tons, 7.9 % - Armour Deck: 2,756 tons, 9.1 % - Conning Tower: 209 tons, 0.7 % Machinery: 4,524 tons, 14.9 % Hull, fittings & equipment: 10,655 tons, 35.2 % Fuel, ammunition & stores: 3,547 tons, 11.7 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 37,415 lbs / 16,971 Kg = 43.3 x 12.0 " / 305 mm shells or 6.7 torpedoes Stability (Unstable if below 1.00): 1.05 Metacentric height 6.0 ft / 1.8 m Roll period: 18.1 seconds Steadiness - As gun platform (Average = 50 %): 59 % - Recoil effect (Restricted arc if above 1.00): 0.30 Seaboat quality (Average = 1.00): 1.14 Hull form characteristics: Hull has rise forward of midbreak Block coefficient: 0.479 Length to Beam Ratio: 5.90 : 1 'Natural speed' for length: 24.90 kts Power going to wave formation at top speed: 57 % Trim (Max stability = 0, Max steadiness = 100): 52 Bow angle (Positive = bow angles forward): -1.00 degrees Stern overhang: -1.00 ft / -0.30 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 29.00 ft / 8.84 m - Forecastle (67 %): 27.00 ft / 8.23 m - Mid (67 %): 27.00 ft / 8.23 m (18.00 ft / 5.49 m aft of break) - Quarterdeck (15 %): 18.00 ft / 5.49 m - Stern: 18.00 ft / 5.49 m - Average freeboard: 24.57 ft / 7.49 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 88.4 % - Above water (accommodation/working, high = better): 127.2 % Waterplane Area: 42,565 Square feet or 3,954 Square metres Displacement factor (Displacement / loading): 112 % Structure weight / hull surface area: 170 lbs/sq ft or 832 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.92 - Longitudinal: 2.04 - Overall: 1.00 Hull space for machinery, storage, compartmentation is adequate Room for accommodation and workspaces is excellent
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Thursday, February 03, 2005
My Ger/BB/1907 with better SHP/ton
With a better SHP/ton for the machinery, I was almost able to match my hopes for the design from 1973. I had hoped for 30 knots, but I have settled for 29 knots (still faster than the original 1971 concept). The design carries 8-12in BLR and 12-4in QF guns. The belt is 13in with a 3.5in deck. The A/T bulkhead is 2 inches. This is the report:
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