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
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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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