F/CA/1918, France Cruiser laid down 1918 (Engine 1922)
Displacement:
11,584 t light; 11,989 t standard; 12,900 t normal; 13,629 t full load
Dimensions: Length overall / water x beam x draught
619.10 ft / 615.00 ft x 62.00 ft x 20.00 ft (normal load)
188.70 m / 187.45 m x 18.90 m x 6.10 m
Armament:
8 - 7.68" / 195 mm guns (4x2 guns), 226.24lbs / 102.62kg shells, 1918 Model
Breech loading guns in turrets (on barbettes)
on centreline, evenly spread, 2 raised mounts
Aft Main mounts separated by engine room
8 - 5.12" / 130 mm guns in single mounts, 67.03lbs / 30.41kg shells, 1918 Model
Quick firing guns in deck mounts with hoists
on side, all amidships
4 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1918 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 2 raised mounts - superfiring
16 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1918 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 8 raised mounts
Weight of broadside 2,486 lbs / 1,128 kg
Shells per gun, main battery: 100
4 - 21.7" / 549.9999 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.00" / 102 mm 400.00 ft / 121.92 m 12.00 ft / 3.66 m
Ends: 3.00" / 76 mm 175.00 ft / 53.34 m 10.00 ft / 3.05 m
40.00 ft / 12.19 m Unarmoured ends
Main Belt covers 100 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1.00" / 25 mm 400.00 ft / 121.92 m 18.00 ft / 5.49 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.00" / 102 mm 3.00" / 76 mm 4.00" / 102 mm
2nd: 2.00" / 51 mm 2.00" / 51 mm 2.00" / 51 mm
- Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 101,743 shp / 75,901 Kw = 32.00 kts
Range 5,400nm at 15.00 kts
Bunker at max displacement = 1,640 tons
Complement:
604 - 786
Cost:
£2.299 million / $9.197 million
Distribution of weights at normal displacement:
Armament: 311 tons, 2.4 %
Armour: 2,846 tons, 22.1 %
- Belts: 997 tons, 7.7 %
- Torpedo bulkhead: 266 tons, 2.1 %
- Armament: 511 tons, 4.0 %
- Armour Deck: 1,024 tons, 7.9 %
- Conning Tower: 47 tons, 0.4 %
Machinery: 3,451 tons, 26.8 %
Hull, fittings & equipment: 4,976 tons, 38.6 %
Fuel, ammunition & stores: 1,316 tons, 10.2 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
14,776 lbs / 6,702 Kg = 65.3 x 7.7 " / 195 mm shells or 1.9 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 3.3 ft / 1.0 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.59
Seaboat quality (Average = 1.00): 1.04
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.592
Length to Beam Ratio: 9.92 : 1
'Natural speed' for length: 24.80 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 4.00 degrees
Stern overhang: 2.00 ft / 0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.00 ft / 9.14 m
- Forecastle (20 %): 24.00 ft / 7.32 m
- Mid (67 %): 24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 21.84 ft / 6.66 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 155.2 %
- Above water (accommodation/working, high = better): 175.6 %
Waterplane Area: 27,681 Square feet or 2,572 Square metres
Displacement factor (Displacement / loading): 105 %
Structure weight / hull surface area: 112 lbs/sq ft or 547 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
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.
Thursday, March 30, 2006
The F/CA/1918 is a much more modern design
The F/CA/1918, with four twin 7.6in (19.5cm) gun turrets is a much more modern design than its predecessor. The secondary armament is reduced in caliber to 5.1in guns (13cm). The ship has a torpedo armament, as well. The speed is increased to 32 knots, a modern minimum. This is the Springsharp report:
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