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
This is a forum for discussion of topics relating to the Dreadnought era, prior to the ascendency of naval aviation. We will be discussing history, ship design, and naval wargaming.
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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