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Duquesene class heavy cruisers
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MN Duquesene and MN Gloire will be fast, powerful additions to the French cruiser force.

Duquesene class, French heavy Cruiser laid down 1926

Displacement:
9,683 t light; 10,154 t standard; 11,917 t normal; 13,328 t full load

Dimensions: Length overall / water x beam x draught
616.80 ft / 616.80 ft x 61.68 ft x 22.38 ft (normal load)
188.00 m / 188.00 m x 18.80 m x 6.82 m

Armament:
9 - 7.87" / 200 mm guns (3x3 guns), 242.51lbs / 110.00kg shells, 1926 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
12 - 3.94" / 100 mm guns (6x2 guns), 35.27lbs / 16.00kg shells, 1926 Model
Dual purpose guns in deck mounts
on side, all amidships
24 - 1.57" / 40.0 mm guns (8x3 guns), 1.95lbs / 0.89kg shells, 1926 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 2,653 lbs / 1,203 kg
Shells per gun, main battery: 150

Aviation:
2 Seaplanes, 1 Catapult

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.54" / 90 mm 451.61 ft / 137.65 m 9.51 ft / 2.90 m
Ends: Unarmoured
Main Belt covers 113 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.72" / 120 mm 1.97" / 50 mm 3.15" / 80 mm
2nd: 0.98" / 25 mm 0.20" / 5 mm -
3rd: 0.98" / 25 mm - -

- Armour deck: 0.98" / 25 mm, Conning tower: 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 104,210 shp / 77,740 Kw = 33.00 kts
Range 12,000nm at 15.00 kts (Bunkerage = 3,174 tons)

Complement:
569 - 741

Cost:
3.731 million / $14.923 million

Distribution of weights at normal displacement:
Armament: 326 tons, 2.7 %
Armour: 1,449 tons, 12.2 %
- Belts: 622 tons, 5.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 325 tons, 2.7 %
- Armour Deck: 457 tons, 3.8 %
- Conning Tower: 44 tons, 0.4 %
Machinery: 3,336 tons, 28.0 %
Hull, fittings & equipment: 4,522 tons, 37.9 %
Fuel, ammunition & stores: 2,234 tons, 18.7 %
Miscellaneous weights: 50 tons, 0.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
10,217 lbs / 4,634 Kg = 41.9 x 7.9 " / 200 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 3.0 ft / 0.9 m
Roll period: 15.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.59
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.490
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 24.84 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.53 ft / 9.00 m
- Forecastle (20 %): 21.00 ft / 6.40 m
- Mid (50 %): 16.73 ft / 5.10 m
- Quarterdeck (15 %): 16.73 ft / 5.10 m
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 18.88 ft / 5.76 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 112.6 %
- Above water (accommodation/working, high = better): 149.0 %
Waterplane Area: 25,120 Square feet or 2,334 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 112 lbs/sq ft or 546 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.27
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform


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