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Desaix, french destroyer laid down 1938 (Engine 1939)
Displacement:
2 994 t light; 3 154 t standard; 3 383 t normal; 3 567 t full load
Dimensions: Length overall / water x beam x draught
456,56 ft / 446,52 ft x 42,65 ft x 15,09 ft (normal load)
139,16 m / 136,10 m x 13,00 m x 4,60 m
Armament:
8 - 5,43" / 138 mm guns (4x2 guns), 80,19lbs / 36,37kg shells, 1938 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread
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
12 - 0,52" / 13,2 mm guns in single mounts, 0,07lbs / 0,03kg shells, 1938 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 655 lbs / 297 kg
Shells per gun, main battery: 250
6 - 21,7" / 550 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,51" / 13 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 88 627 shp / 66 116 Kw = 39,00 kts
Range 4 400nm at 14,00 kts
Bunker at max displacement = 413 tons
Complement:
221 - 288
Cost:
£2,599 million / $10,395 million
Distribution of weights at normal displacement:
Armament: 82 tons, 2,4%
Armour: 11 tons, 0,3%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 11 tons, 0,3%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 2 054 tons, 60,7%
Hull, fittings & equipment: 847 tons, 25,0%
Fuel, ammunition & stores: 389 tons, 11,5%
Miscellaneous weights: 0 tons, 0,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
543 lbs / 246 Kg = 6,8 x 5,4 " / 138 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,37
Metacentric height 2,4 ft / 0,7 m
Roll period: 11,5 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0,38
Seaboat quality (Average = 1.00): 0,63
Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0,412
Length to Beam Ratio: 10,47 : 1
'Natural speed' for length: 24,31 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 80
Bow angle (Positive = bow angles forward): 27,40 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19,36 ft / 5,90 m
- Forecastle (20%): 18,37 ft / 5,60 m
- Mid (50%): 18,37 ft / 5,60 m (11,48 ft / 3,50 m aft of break)
- Quarterdeck (15%): 11,48 ft / 3,50 m
- Stern: 11,48 ft / 3,50 m
- Average freeboard: 15,01 ft / 4,57 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 215,2%
- Above water (accommodation/working, high = better): 119,2%
Waterplane Area: 12 258 Square feet or 1 139 Square metres
Displacement factor (Displacement / loading): 62%
Structure weight / hull surface area: 42 lbs/sq ft or 203 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,47
- Longitudinal: 0,92
- Overall: 0,50
Hull space for machinery, storage, compartmentation is extremely poor
Room for accommodation and workspaces is adequate
Caution: Lacks seaworthiness - very limited seakeeping ability
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