Ger/BB/1907, Germany Battleship laid down 1907 Displacement: 25,394 t light; 26,354 t standard; 29,548 t normal; 32,103 t full load Dimensions: Length overall / water x beam x draught 620.00 ft / 620.00 ft x 105.00 ft x 26.00 ft (normal load) 188.98 m / 188.98 m x 32.00 m x 7.92 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, evenly spread, all raised mounts Aft Main mounts separated by engine room 12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1907 Model Quick firing guns in deck mounts 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 335.00 ft / 102.11 m 8.00 ft / 2.44 m Ends: Unarmoured Upper: 7.00" / 178 mm 335.00 ft / 102.11 m 16.00 ft / 4.88 m Main Belt covers 83 % of normal length - Torpedo Bulkhead: 1.50" / 38 mm 335.00 ft / 102.11 m 26.00 ft / 7.92 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 13.0" / 330 mm 8.00" / 203 mm 10.0" / 254 mm 2nd: 2.00" / 51 mm - - - Armour deck: 4.00" / 102 mm, Conning tower: 10.00" / 254 mm Machinery: Oil fired boilers, steam turbines, Direct drive, 4 shafts, 58,432 shp / 43,590 Kw = 24.00 kts Range 6,500nm at 15.00 kts Bunker at max displacement = 5,749 tons Complement: 1,126 - 1,464 Cost: £2.120 million / $8.479 million Distribution of weights at normal displacement: Armament: 912 tons, 3.1 % Armour: 10,022 tons, 33.9 % - Belts: 3,346 tons, 11.3 % - Torpedo bulkhead: 483 tons, 1.6 % - Armament: 2,428 tons, 8.2 % - Armour Deck: 3,560 tons, 12.0 % - Conning Tower: 206 tons, 0.7 % Machinery: 3,320 tons, 11.2 % Hull, fittings & equipment: 11,139 tons, 37.7 % Fuel, ammunition & stores: 4,154 tons, 14.1 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 56,772 lbs / 25,752 Kg = 65.7 x 12.0 " / 305 mm shells or 9.4 torpedoes Stability (Unstable if below 1.00): 1.13 Metacentric height 6.8 ft / 2.1 m Roll period: 16.9 seconds Steadiness - As gun platform (Average = 50 %): 76 % - Recoil effect (Restricted arc if above 1.00): 0.45 Seaboat quality (Average = 1.00): 1.53 Hull form characteristics: Hull has rise forward of midbreak, raised quarterdeck Block coefficient: 0.611 Length to Beam Ratio: 5.90 : 1 'Natural speed' for length: 24.90 kts Power going to wave formation at top speed: 50 % 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: 30.00 ft / 9.14 m - Forecastle (20 %): 28.00 ft / 8.53 m - Mid (76 %): 28.00 ft / 8.53 m (18.00 ft / 5.49 m aft of break) - Quarterdeck (15 %): 18.00 ft / 5.49 m (0.00 ft / 0.00 m before break) - Stern: 18.00 ft / 5.49 m - Average freeboard: 24.95 ft / 7.60 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 74.5 % - Above water (accommodation/working, high = better): 206.4 % Waterplane Area: 48,104 Square feet or 4,469 Square metres Displacement factor (Displacement / loading): 123 % Structure weight / hull surface area: 171 lbs/sq ft or 833 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.94 - Longitudinal: 1.78 - 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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Saturday, January 08, 2005
My Ger/BB/1907 design really worked well
Aside from having to inflate the displacement, I received a glowing report from Springsharp about my Ger/BB/1907 design. The concept was for a well-armored ship with 8-12in guns and 24 knots speed. I had hoped for a normal displacement of 25,847 tons, but that was too low for Springsharp. The ship has a tripod foremast and two funnels. What I was able to do was:
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