Ger/CB/1905, Germany Battlecruiser laid down 1905 (Engine 1909) Displacement: 16,893 t light; 17,452 t standard; 19,000 t normal; 20,239 t full load Dimensions: Length overall / water x beam x draught 700.00 ft / 700.00 ft x 80.00 ft x 24.40 ft (normal load) 213.36 m / 213.36 m x 24.38 m x 7.44 m Armament: 4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1905 Model Breech loading guns in turrets (on barbettes) on centreline ends, evenly spread 10 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model Quick firing guns in casemate mounts on side, evenly spread 4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model Breech loading guns in deck mounts with hoists on side, evenly spread, all raised mounts Weight of broadside 3,904 lbs / 1,771 kg Shells per gun, main battery: 80 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 4.00" / 102 mm 550.00 ft / 167.64 m 8.00 ft / 2.44 m Ends: Unarmoured Upper: 3.00" / 76 mm 550.00 ft / 167.64 m 8.00 ft / 2.44 m Main Belt covers 121 % of normal length Main belt does not fully cover magazines and engineering spaces - Torpedo Bulkhead: 1.00" / 25 mm 550.00 ft / 167.64 m 24.00 ft / 7.32 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 4.00" / 102 mm 4.00" / 102 mm 4.00" / 102 mm 2nd: 2.00" / 51 mm 2.00" / 51 mm 2.00" / 51 mm 3rd: 2.00" / 51 mm - - - Armour deck: 3.00" / 76 mm, Conning tower: 6.00" / 152 mm Machinery: Oil fired boilers, steam turbines, Direct drive, 4 shafts, 104,749 shp / 78,142 Kw = 31.00 kts Range 4,600nm at 15.00 kts Bunker at max displacement = 2,787 tons Complement: 808 - 1,051 Cost: £1.668 million / $6.671 million Distribution of weights at normal displacement: Armament: 488 tons, 2.6 % Armour: 4,310 tons, 22.7 % - Belts: 1,255 tons, 6.6 % - Torpedo bulkhead: 488 tons, 2.6 % - Armament: 429 tons, 2.3 % - Armour Deck: 2,046 tons, 10.8 % - Conning Tower: 92 tons, 0.5 % Machinery: 4,761 tons, 25.1 % Hull, fittings & equipment: 7,334 tons, 38.6 % Fuel, ammunition & stores: 2,107 tons, 11.1 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 23,983 lbs / 10,879 Kg = 27.8 x 12.0 " / 305 mm shells or 3.0 torpedoes Stability (Unstable if below 1.00): 1.33 Metacentric height 5.9 ft / 1.8 m Roll period: 13.8 seconds Steadiness - As gun platform (Average = 50 %): 67 % - Recoil effect (Restricted arc if above 1.00): 0.33 Seaboat quality (Average = 1.00): 1.35 Hull form characteristics: Hull has rise forward of midbreak Block coefficient: 0.487 Length to Beam Ratio: 8.75 : 1 'Natural speed' for length: 26.46 kts Power going to wave formation at top speed: 52 % 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: 28.00 ft / 8.53 m - Forecastle (20 %): 25.00 ft / 7.62 m - Mid (61 %): 25.00 ft / 7.62 m (17.00 ft / 5.18 m aft of break) - Quarterdeck (15 %): 17.00 ft / 5.18 m - Stern: 17.00 ft / 5.18 m - Average freeboard: 22.12 ft / 6.74 m Ship tends to be wet forward Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 134.1 % - Above water (accommodation/working, high = better): 191.6 % Waterplane Area: 36,866 Square feet or 3,425 Square metres Displacement factor (Displacement / loading): 107 % Structure weight / hull surface area: 132 lbs/sq ft or 646 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.97 - Longitudinal: 1.29 - Overall: 1.00 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is excellent Good seaboat, rides out heavy weather easily
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Saturday, July 09, 2005
A revision to what I just did: Ger/CB/1905
I found on a succeeding page, a midships cross section of the Ger/CB/1905, and I realized that what I just published was different than this. The lower belt is 4in and the upper belt is just 3in. The deck armor should be 3in and the anti-torpedo protection should be just 1in. This also shows the Ger/CB/1905 as not having a flat bottom. The floor angles up about two feet from the centerline to the anti-torpedo bulkhead position. This is the revised Springsharp report:
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