US/DL/1941 Large, United States Large Destroyer laid down 1941 (Engine 1945) Displacement: 5,412 t light; 5,622 t standard; 6,177 t normal; 6,621 t full load Dimensions: Length overall / water x beam x draught 479.45 ft / 475.00 ft x 48.00 ft x 22.00 ft (normal load) 146.14 m / 144.78 m x 14.63 m x 6.71 m Armament: 8 - 5.10" / 130 mm guns (4x2 guns), 66.33lbs / 30.08kg shells, 1941 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread, all raised mounts - superfiring 28 - 1.57" / 40.0 mm guns (7x4 guns), 1.95lbs / 0.89kg shells, 1941 Model Anti-aircraft guns in deck mounts on side ends, majority forward, all raised mounts - superfiring Weight of broadside 585 lbs / 265 kg Shells per gun, main battery: 250 10 - 24.0" / 609.6 mm above water torpedoes Machinery: Oil fired boilers, steam turbines, Geared drive, 4 shafts, 109,732 shp / 81,860 Kw = 36.00 kts Range 6,500nm at 15.00 kts Bunker at max displacement = 1,000 tons Complement: 347 - 452 Cost: £3.949 million / $15.796 million Distribution of weights at normal displacement: Armament: 73 tons, 1.2 % Machinery: 2,771 tons, 44.9 % Hull, fittings & equipment: 2,568 tons, 41.6 % Fuel, ammunition & stores: 765 tons, 12.4 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 3,401 lbs / 1,543 Kg = 51.3 x 5.1 " / 130 mm shells or 0.6 torpedoes Stability (Unstable if below 1.00): 1.29 Metacentric height 2.6 ft / 0.8 m Roll period: 12.4 seconds Steadiness - As gun platform (Average = 50 %): 56 % - Recoil effect (Restricted arc if above 1.00): 0.36 Seaboat quality (Average = 1.00): 1.11 Hull form characteristics: Hull has a flush deck Block coefficient: 0.431 Length to Beam Ratio: 9.90 : 1 'Natural speed' for length: 21.79 kts Power going to wave formation at top speed: 65 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 5.00 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 %): 20.00 ft / 6.10 m - Mid (50 %): 20.00 ft / 6.10 m - Quarterdeck (15 %): 20.00 ft / 6.10 m - Stern: 20.00 ft / 6.10 m - Average freeboard: 20.64 ft / 6.29 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 154.8 % - Above water (accommodation/working, high = better): 95.2 % Waterplane Area: 14,328 Square feet or 1,331 Square metres Displacement factor (Displacement / loading): 101 % Structure weight / hull surface area: 86 lbs/sq ft or 418 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.87 - Longitudinal: 3.51 - Overall: 1.00 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is adequate
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Thursday, April 07, 2005
Super destroyer: US/DL/1941 Large
This is the corresponding destroyer design to work with the family of large, fast warships. I call it the US/DL/1941 Large. It probably is undergunned, but I hesitate to go to a larger caliber than 5.1in. I do have 24in torpedo tubes, a high speed, and a decent range for such a small ship. This is the Springsharp report:
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