The Deutsche Schiff und Maschinenbau Aktiengesellschaft of Bremen has proposed the following design to meet the potential needs of foreign customers for an affordable yet modern destroyer of modest dimensions.
Deschimag Export Destroyer, German - Export Account Destroyer laid down 1941
Displacement: 1,617 t light; 1,700 t standard; 1,925 t normal; 2,104 t full load
Dimensions: Length overall / water x beam x draught
386.73 ft / 374.02 ft x 35.99 ft x 12.20 ft (normal load) [117.88 m / 114.00 m x 10.97 m x 3.72 m]
Armament:
4 - 5.04" / 128 mm guns in single mounts, 63.99lbs / 29.03kg shells, 1940 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, all amidships, all raised mounts - superfiring
8 - 0.79" / 20.0 mm guns (2x4 guns), 0.24lbs / 0.11kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 271 lbs / 123 kg
Shells per gun, main battery: 280
10 - 21.0" / 533.4 mm above water torpedoes
Armour:
Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm -
2nd: 0.59" / 15 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -
4th: 0.39" / 10 mm - -
Conning tower: 1.57" / 40 mm
Machinery:
Oil fired boilers, steam turbines, Geared drive, 2 shafts, 33,917 shp / 25,302 Kw = 33.00 kts
Range 5,500nm at 15.00 kts
Bunker at max displacement = 405 tons
Complement: 144 - 188
Cost: £1.254 million / $5.015 million
Distribution of weights at normal displacement:
Armament: 34 tons, 1.8 %
Armour: 20 tons, 1.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 15 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.3 %
Machinery: 841 tons, 43.7 %
Hull, fittings & equipment: 672 tons, 34.9 %
Fuel, ammunition & stores: 307 tons, 16.0 %
Miscellaneous weights: 50 tons, 2.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship): 782 lbs / 355 Kg = 12.2 x 5.0 " / 128 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 1.5 ft / 0.5 m
Roll period: 12.2 seconds
Steadiness - As gun platform (Average = 50 %): 74 %
- Recoil effect (Restricted arc if above 1.00): 0.53
Seaboat quality (Average = 1.00): 1.42
Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak and transom stern
Block coefficient: 0.410
Length to Beam Ratio: 10.39: 1
'Natural speed' for length: 22.26 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 52
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.92 ft / 7.90 m
- Forecastle (20 %): 24.61 ft / 7.50 m (23.95 ft / 7.30 m aft of break)
- Mid (45 %): 23.95 ft / 7.30 m (12.14 ft / 3.70 m aft of break)
- Quarterdeck (15 %): 12.14 ft / 3.70 m
- Stern: 12.14 ft / 3.70 m
- Average freeboard: 17.69 ft / 5.39 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 158.8 %
- Above water (accommodation/working, high = better): 93.2 %
Waterplane Area: 8,653 Square feet or 804 Square metres
Displacement factor (Displacement / loading): 90 %
Structure weight / hull surface area: 36 lbs/sq ft or 177 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.84
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Breakdown of Miscellaneous Weight
50 tons reserved for electronics and design growth