Ger/CB/1915 D1, Germany Enter ship type laid down 1915 Displacement: 46,288 t light; 48,180 t standard; 52,997 t normal; 56,850 t full load Dimensions: Length overall / water x beam x draught 901.89 ft / 900.00 ft x 100.00 ft x 30.00 ft (normal load) 274.90 m / 274.32 m x 30.48 m x 9.14 m Armament: 6 - 16.50" / 419 mm guns (2x3 guns), 2,246.06lbs / 1,018.80kg shells, 1915 Model Breech loading guns in turrets (on barbettes) on centreline, all forward, all raised mounts - superfiring 12 - 6.00" / 152 mm guns (4x3 guns), 108.00lbs / 48.99kg shells, 1915 Model Quick firing guns in turrets (on barbettes) on side, all aft, all raised mounts - superfiring Weight of broadside 14,772 lbs / 6,701 kg Shells per gun, main battery: 100 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 8.00" / 203 mm 420.00 ft / 128.02 m 16.00 ft / 4.88 m Ends: Unarmoured Main Belt covers 72 % of normal length Main belt does not fully cover magazines and engineering spaces - Torpedo Bulkhead: 1.00" / 25 mm 420.00 ft / 128.02 m 28.00 ft / 8.53 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 8.00" / 203 mm 6.00" / 152 mm 8.00" / 203 mm 2nd: 4.00" / 102 mm 3.00" / 76 mm 4.00" / 102 mm - Armour deck: 4.00" / 102 mm, Conning tower: 8.00" / 203 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 6 shafts, 316,605 shp / 236,187 Kw = 35.00 kts Range 10,000nm at 15.00 kts Bunker at max displacement = 8,670 tons Complement: 1,746 - 2,270 Cost: £7.055 million / $28.219 million Distribution of weights at normal displacement: Armament: 1,847 tons, 3.5 % Armour: 10,889 tons, 20.5 % - Belts: 2,417 tons, 4.6 % - Torpedo bulkhead: 435 tons, 0.8 % - Armament: 2,517 tons, 4.8 % - Armour Deck: 5,276 tons, 10.0 % - Conning Tower: 243 tons, 0.5 % Machinery: 11,993 tons, 22.6 % Hull, fittings & equipment: 21,560 tons, 40.7 % Fuel, ammunition & stores: 6,709 tons, 12.7 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 62,316 lbs / 28,266 Kg = 27.7 x 16.5 " / 419 mm shells or 5.5 torpedoes Stability (Unstable if below 1.00): 1.12 Metacentric height 6.2 ft / 1.9 m Roll period: 16.9 seconds Steadiness - As gun platform (Average = 50 %): 55 % - Recoil effect (Restricted arc if above 1.00): 0.94 Seaboat quality (Average = 1.00): 1.11 Hull form characteristics: Hull has rise forward of midbreak Block coefficient: 0.687 Length to Beam Ratio: 9.00 : 1 'Natural speed' for length: 30.00 kts Power going to wave formation at top speed: 57 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 3.00 degrees Stern overhang: 0.00 ft / 0.00 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 36.00 ft / 10.97 m - Forecastle (20 %): 33.00 ft / 10.06 m - Mid (74 %): 33.00 ft / 10.06 m (25.00 ft / 7.62 m aft of break) - Quarterdeck (15 %): 25.00 ft / 7.62 m - Stern: 25.00 ft / 7.62 m - Average freeboard: 31.16 ft / 9.50 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 124.7 % - Above water (accommodation/working, high = better): 246.2 % Waterplane Area: 71,302 Square feet or 6,624 Square metres Displacement factor (Displacement / loading): 107 % Structure weight / hull surface area: 205 lbs/sq ft or 1,003 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.97 - Longitudinal: 1.32 - Overall: 1.00 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is excellent
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Sunday, January 09, 2005
I took another run at the Ger/CB/1915 design
I found a nice drawing (inboard profile and cross section of the hull, amidships, with armor thicknesses labeled. I couldn't ignore that, so I tried a 35 knot version. Except for being large, I like how it turned out. The ship has a tower foremast and three funnels. There are two triple 16.5in turrets forward (one superfiring), and four triple 6in turrets aft.
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