F/CA/1919, France Armoured Cruiser laid down 1919 (Engine 1933)
Displacement:
22,380 t light; 23,144 t standard; 24,369 t normal; 25,350 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(733.50 ft / 729.00 ft) x 80.00 ft x (25.00 / 25.82 ft)
(223.57 m / 222.20 m) x 24.38 m x (7.62 / 7.87 m)
Armament:
6 - 11.00" / 279 mm 45.0 cal guns - 670.00lbs / 303.91kg shells, 90 per gun
Breech loading guns in turret on barbette mounts, 1919 Model
2 x Triple mounts on centreline, forward deck forward
1 raised mount - superfiring
8 - 6.00" / 152 mm 45.0 cal guns - 100.00lbs / 45.36kg shells, 150 per gun
Quick firing guns in deck and hoist mounts, 1919 Model
4 x Twin mounts on sides, aft deck forward
Weight of broadside 4,820 lbs / 2,186 kg
6 - 21.0" / 533 mm, 22.00 ft / 6.71 m torpedoes - 1.417 t each, 8.503 t total
In 2 sets of deck mounted side rotating tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.00" / 203 mm 370.00 ft / 112.78 m 8.00 ft / 2.44 m
Ends: Unarmoured
Main Belt covers 78 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1.00" / 25 mm 370.00 ft / 112.78 m 25.00 ft / 7.62 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 7.00" / 178 mm 10.0" / 254 mm
2nd: 4.00" / 102 mm 3.00" / 76 mm 4.00" / 102 mm
- Armoured deck - multiple decks: 4.00" / 102 mm For and Aft decks
Forecastle: 4.00" / 102 mm Quarter deck: 4.00" / 102 mm
- Conning towers: Forward 8.00" / 203 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 204,178 shp / 152,317 Kw = 35.00 kts
Range 5,400nm at 15.00 kts
Bunker at max displacement = 2,206 tons
Complement:
974 - 1,267
Cost:
£4.527 million / $18.106 million
Distribution of weights at normal displacement:
Armament: 927 tons, 3.8 %
- Guns: 918 tons, 3.8 %
- Torpedoes: 9 tons, 0.0 %
Armour: 5,951 tons, 24.4 %
- Belts: 1,032 tons, 4.2 %
- Torpedo bulkhead: 342 tons, 1.4 %
- Armament: 1,298 tons, 5.3 %
- Armour Deck: 3,134 tons, 12.9 %
- Conning Tower: 145 tons, 0.6 %
Machinery: 5,949 tons, 24.4 %
Hull, fittings & equipment: 9,554 tons, 39.2 %
Fuel, ammunition & stores: 1,989 tons, 8.2 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
32,486 lbs / 14,735 Kg = 48.8 x 11.0 " / 279 mm shells or 3.5 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 4.4 ft / 1.3 m
Roll period: 16.0 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.61
Seaboat quality (Average = 1.00): 1.07
Hull form characteristics:
Hull has low quarterdeck ,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.585 / 0.589
Length to Beam Ratio: 9.11 : 1
'Natural speed' for length: 27.00 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 8.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 32.00 ft / 9.75 m, 30.00 ft / 9.14 m
- Forward deck: 30.00 %, 30.00 ft / 9.14 m, 29.00 ft / 8.84 m
- Aft deck: 23.00 %, 29.00 ft / 8.84 m, 29.00 ft / 8.84 m
- Quarter deck: 27.00 %, 21.00 ft / 6.40 m, 21.00 ft / 6.40 m
- Average freeboard: 27.35 ft / 8.34 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 128.6 %
- Above water (accommodation/working, high = better): 238.1 %
Waterplane Area: 42,060 Square feet or 3,907 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 150 lbs/sq ft or 733 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.56
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
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.
Tuesday, October 30, 2007
The F/CA/1919 design with 11in guns
Perhaps for realism, the F/CA/1919 design should have 10.8in guns, but it has 11in guns, instead. Back in the early 1970's, having a version of the fast belted cruiser with 11in guns seemed like the next logical step. The secondary armament grew to 8-6in guns. The speed is now 35 knots, so it is a very potent design:
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