Ger/DL/1915 alternative design, Germany Destroyer Leader laid down 1915 (Engine 1950) Displacement: 1,718 t light; 1,780 t standard; 2,011 t normal; 2,196 t full load Dimensions: Length (overall / waterline) x beam x draught (normal/deep) (393.37 ft / 390.00 ft) x 40.00 ft x (12.00 / 12.68 ft) (119.90 m / 118.87 m) x 12.19 m x (3.66 / 3.86 m) Armament: 4 - 5.00" / 127 mm 50.0 cal guns - 66.16lbs / 30.01kg shells, 150 per gun Breech loading guns in deck and hoist mounts , 1915 Model 4 x Single mounts on centreline ends, evenly spread 2 raised mounts - superfiring Weight of broadside 265 lbs / 265 kg 6 - 23.6" / 599 mm above water torpedoes Armour: - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 2 shafts, 51,288 shp / 38,261 Kw = 35.00 kts Range 5,600nm at 15.00 kts Bunker at max displacement = 415 tons Complement: 149 - 195 Cost: £0.335 million / $1.341 million Distribution of weights at normal displacement: Armament: 79 tons, 3.9 % Armour: 32 tons, 1.6 % - Belts: 0 tons, 0.0 % - Torpedo bulkhead: 0 tons, 0.0 % - Armament: 32 tons, 1.6 % - Armour Deck: 0 tons, 0.0 % - Conning Tower: 0 tons, 0.0 % Machinery: 1,017 tons, 50.6 % Hull, fittings & equipment: 636 tons, 31.6 % Fuel, ammunition & stores: 293 tons, 14.6 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 594 lbs / 269 Kg = 9.5 x 5.0 " / 127 mm shells or 0.3 torpedoes Stability (Unstable if below 1.00): 1.34 Metacentric height 2.1 ft / 0.6 m Roll period: 11.5 seconds Steadiness - As gun platform (Average = 50 %): 51 % - Recoil effect (Restricted arc if above 1.00): 0.29 Seaboat quality (Average = 1.00): 1.02 Hull form characteristics: Hull has rise forward of midbreak, a normal bow and a round stern Block coefficient (normal/deep): 0.376 / 0.388 Length to Beam Ratio: 9.75 : 1 'Natural speed' for length: 19.75 kts Power going to wave formation at top speed: 66 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 8.00 degrees Stern overhang: 0.00 ft / 0.00 m Freeboard (% = length of deck as a percentage of waterline length): Fore end, Aft end - Forecastle: 20.00 %, 24.00 ft / 7.32 m, 21.00 ft / 6.40 m - Forward deck: 20.00 %, 21.00 ft / 6.40 m, 21.00 ft / 6.40 m - Aft deck: 45.00 %, 13.00 ft / 3.96 m, 13.00 ft / 3.96 m - Quarter deck: 15.00 %, 13.00 ft / 3.96 m, 13.00 ft / 3.96 m - Average freeboard: 16.44 ft / 5.01 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 176.0 % - Above water (accommodation/working, high = better): 124.9 % Waterplane Area: 9,498 Square feet or 882 Square metres Displacement factor (Displacement / loading): 73 % Structure weight / hull surface area: 36 lbs/sq ft or 178 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.45 - Longitudinal: 1.58 - Overall: 0.51 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is excellent
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Wednesday, June 06, 2007
An alternative Ger/DL/1915 design
I had another Ger/DL/1915 design study that took a different approach. The ship is much longer, and because of that, is able to make 35 knots. The armament is changed in flavor to favor torpedoes: 4-5in QF guns and 6-23.6in TT with reloads. The look is very German, with twin funnels and caps. This is the Springsharp report:
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