Le SpringSharp du Jean Bart me donne une réserve de poids de 2550t pour construire le hangar avec le pont hélicos et les nouvelles installations missiles et radars.
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Jean Bart, France Battleship laid down 1939
Displacement:
43 536 t light; 45 430 t standard; 47 886 t normal; 49 850 t full load
Dimensions: Length overall / water x beam x draught
810.69 ft / 787.40 ft x 108.27 ft (Bulges 115.98 ft) x 30.90 ft (normal load)
247.10 m / 240.00 m x 33.00 m (Bulges 35.35 m) x 9.42 m
Armament:
8 - 14.96" / 380 mm guns (2x4 guns), 2 061.32lbs / 935.00kg shells, 1939 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
6 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1939 Model
Breech loading guns in deck mounts with hoists
on side, evenly spread, all raised mounts
16 - 2.24" / 57.0 mm guns (8x2 guns), 5.65lbs / 2.56kg shells, 1939 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 6 raised mounts - superfiring
Weight of broadside 16 764 lbs / 7 604 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.6" / 345 mm 511.81 ft / 156.00 m 11.48 ft / 3.50 m
Ends: 5.98" / 152 mm 164.04 ft / 50.00 m 9.84 ft / 3.00 m
111.55 ft / 34.00 m Unarmoured ends
Upper: 5.00" / 127 mm 511.81 ft / 156.00 m 8.01 ft / 2.44 m
Main Belt covers 100 % of normal length
Inclined 15°
- Torpedo Bulkhead and Bulges:
1.97" / 50 mm 511.81 ft / 156.00 m 29.53 ft / 9.00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16.9" / 430 mm 7.09" / 180 mm 15.9" / 405 mm
2nd: 0.79" / 20 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -
- Armour deck: 6.30" / 160 mm, Conning tower: 13.39" / 340 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 169 273 shp / 126 277 Kw = 30.00 kts
Range 5 000nm at 18.00 kts
Bunker at max displacement = 4 421 tons
Complement:
1 618 - 2 104
Cost:
£20.946 million / $83.782 million
Distribution of weights at normal displacement:
Armament: 1 708 tons, 3.6 %
Armour: 16 075 tons, 33.6 %
- Belts: 4 685 tons, 9.8 %
- Torpedo bulkhead: 1 101 tons, 2.3 %
- Armament: 2 684 tons, 5.6 %
- Armour Deck: 7 225 tons, 15.1 %
- Conning Tower: 380 tons, 0.8 %
Machinery: 4 580 tons, 9.6 %
Hull, fittings & equipment: 18 622 tons, 38.9 %
Fuel, ammunition & stores: 4 350 tons, 9.1 %
Miscellaneous weights: 2 550 tons, 5.3 % Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
73 184 lbs / 33 196 Kg = 43.7 x 15.0 " / 380 mm shells or 12.2 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 6.4 ft / 2.0 m
Roll period: 19.2 seconds
Steadiness - As gun platform (Average = 50 %): 69 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 1.15
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.594
Length to Beam Ratio: 6.79 : 1
'Natural speed' for length: 28.06 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 10.37 ft / 3.16 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.99 ft / 9.75 m
- Forecastle (20 %): 26.25 ft / 8.00 m
- Mid (50 %): 24.28 ft / 7.40 m
- Quarterdeck (0 %): 24.28 ft / 7.40 m
- Stern: 24.28 ft / 7.40 m
- Average freeboard: 25.43 ft / 7.75 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 79.3 %
- Above water (accommodation/working, high = better): 179.9 %
Waterplane Area: 62 002 Square feet or 5 760 Square metres
Displacement factor (Displacement / loading): 116 %
Structure weight / hull surface area: 211 lbs/sq ft or 1 030 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.46
- Overall: 1.00 Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Jef