Ger/DD/1905, Germany Destroyer laid down 1905 (Engine 1933)
Displacement:
711 t light; 736 t standard; 797 t normal; 846 t full load
Dimensions: Length overall / water x beam x draught
270.33 ft / 270.00 ft x 28.00 ft x 10.00 ft (normal load)
82.40 m / 82.30 m x 8.53 m x 3.05 m
Armament:
2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
Weight of broadside 64 lbs / 29 kg
Shells per gun, main battery: 250
2 - 18.0" / 457.2 mm above water torpedoes
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 23,972 shp / 17,883 Kw = 32.00 kts
Range 3,600nm at 12.00 kts
Bunker at max displacement = 110 tons
Complement:
74 - 97
Cost:
£0.090 million / $0.361 million
Distribution of weights at normal displacement:
Armament: 8 tons, 1.0 %
Machinery: 420 tons, 52.7 %
Hull, fittings & equipment: 283 tons, 35.5 %
Fuel, ammunition & stores: 86 tons, 10.8 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
233 lbs / 106 Kg = 7.3 x 4.0 " / 102 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 1.1 ft / 0.3 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 63 %
- Recoil effect (Restricted arc if above 1.00): 0.25
Seaboat quality (Average = 1.00): 1.02
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.369
Length to Beam Ratio: 9.64 : 1
'Natural speed' for length: 16.43 kts
Power going to wave formation at top speed: 70 %
Trim (Max stability = 0, Max steadiness = 100): 62
Bow angle (Positive = bow angles forward): 1.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.00 ft / 5.79 m
- Forecastle (31 %): 18.00 ft / 5.49 m
- Mid (31 %): 18.00 ft / 5.49 m (11.00 ft / 3.35 m aft of break)
- Quarterdeck (15 %): 11.00 ft / 3.35 m
- Stern: 11.00 ft / 3.35 m
- Average freeboard: 13.29 ft / 4.05 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 178.2 %
- Above water (accommodation/working, high = better): 112.7 %
Waterplane Area: 4,594 Square feet or 427 Square metres
Displacement factor (Displacement / loading): 55 %
Structure weight / hull surface area: 29 lbs/sq ft or 140 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.49
- Longitudinal: 3.28
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
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.
Friday, February 04, 2005
Yet another run at the Ger/DD/1905 design
So, by going to higher power output machinery, I can make my F-class like design for a German destroyer for 1905 work. The ship was intended to make 32 knots and have 2-4in QF and 2-18in TT. That should be a pretty conservative design, only marginally edgy on speed.
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