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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