Ger/DL/1914, Germany Destroyer Leader laid down 1914 (Engine 1933) Displacement: 1,214 t light; 1,262 t standard; 1,404 t normal; 1,518 t full load Dimensions: Length overall / water x beam x draught 322.73 ft / 320.00 ft x 32.00 ft x 12.00 ft (normal load) 98.37 m / 97.54 m x 9.75 m x 3.66 m Armament: 4 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1914 Model Quick firing guns in deck mounts with hoists on centreline ends, evenly spread, all raised mounts - superfiring Weight of broadside 141 lbs / 64 kg Shells per gun, main battery: 250 6 - 23.6" / 600.0001 mm above water torpedoes Machinery: Oil fired boilers, steam turbines, Geared drive, 2 shafts, 31,614 shp / 23,584 Kw = 32.00 kts Range 3,600nm at 15.00 kts Bunker at max displacement = 256 tons Complement: 114 - 149 Cost: £0.201 million / $0.804 million Distribution of weights at normal displacement: Armament: 18 tons, 1.3 % Machinery: 719 tons, 51.2 % Hull, fittings & equipment: 478 tons, 34.0 % Fuel, ammunition & stores: 190 tons, 13.5 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 463 lbs / 210 Kg = 13.1 x 4.1 " / 105 mm shells or 0.3 torpedoes Stability (Unstable if below 1.00): 1.34 Metacentric height 1.5 ft / 0.5 m Roll period: 10.9 seconds Steadiness - As gun platform (Average = 50 %): 52 % - Recoil effect (Restricted arc if above 1.00): 0.31 Seaboat quality (Average = 1.00): 1.05 Hull form characteristics: Hull has raised forecastle, rise forward of midbreak Block coefficient: 0.400 Length to Beam Ratio: 10.00 : 1 'Natural speed' for length: 17.89 kts Power going to wave formation at top speed: 67 % 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: 21.00 ft / 6.40 m - Forecastle (20 %): 20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break) - Mid (35 %): 19.00 ft / 5.79 m (12.00 ft / 3.66 m aft of break) - Quarterdeck (15 %): 12.00 ft / 3.66 m - Stern: 12.00 ft / 3.66 m - Average freeboard: 14.21 ft / 4.33 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 175.5 % - Above water (accommodation/working, high = better): 66.0 % Waterplane Area: 6,303 Square feet or 586 Square metres Displacement factor (Displacement / loading): 71 % Structure weight / hull surface area: 37 lbs/sq ft or 180 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.57 - Longitudinal: 2.52 - Overall: 0.66 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is cramped
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Saturday, February 05, 2005
Another try at my Ger/DL/1914 design
The design of the Ger/DL/1914 was inspired by the German ships, some built for Russia, that had three stacks and 4-4.1in guns, with 6-TT. By taking care of the SHP/ton issue, the design works well. A drawback of the basic concept is that it is low-volume, above and below the waterline.
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