GB/CA/1941, Great Britain Armoured Cruiser laid down 1941
Displacement:
18,490 t light; 19,179 t standard; 20,198 t normal; 21,012 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(723.93 ft / 720.00 ft) x 80.00 ft x (23.00 / 23.72 ft)
(220.65 m / 219.46 m) x 24.38 m x (7.01 / 7.23 m)
Armament:
9 - 9.20" / 234 mm 50.0 cal guns - 412.17lbs / 186.96kg shells, 120 per gun
Breech loading guns in turret on barbette mounts , 1941 Model
3 x Triple mounts on centreline ends, majority forward
1 raised mount - superfiring
Aft Main mounts separated by engine room
12 - 4.00" / 102 mm 45.0 cal guns - 32.00lbs / 14.51kg shells, 150 per gun
Anti-air guns in deck and hoist mounts , 1941 Model
6 x Twin mounts on sides, evenly spread
6 raised mounts
24 - 1.57" / 40.0 mm 45.0 cal guns - 1.97lbs / 0.89kg shells, 250 per gun
Anti-air guns in deck mounts , 1941 Model
2 x 2 row sextuple mounts on sides, evenly spread
2 raised mounts
2 x 2 row sextuple mounts on centreline, aft deck aft
1 raised mount - superfiring
Weight of broadside 4,141 lbs / 4,141 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.00" / 127 mm 460.00 ft / 140.21 m 8.00 ft / 2.44 m
Ends: Unarmoured
Upper: 5.00" / 127 mm 460.00 ft / 140.21 m 8.00 ft / 2.44 m
Main Belt covers 98 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 6.00" / 152 mm 4.00" / 102 mm 5.00" / 127 mm
2nd: 1.00" / 25 mm 1.00" / 25 mm 1.00" / 25 mm
3rd: 1.00" / 25 mm 1.00" / 25 mm -
- Armour deck: 3.00" / 76 mm, Conning tower: 6.00" / 152 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 178,891 shp / 133,453 Kw = 35.00 kts
Range 5,400nm at 15.00 kts
Bunker at max displacement = 1,833 tons
Complement:
846 - 1,101
Cost:
£10.726 million / $42.906 million
Distribution of weights at normal displacement:
Armament: 1,016 tons, 5.0 %
Armour: 4,625 tons, 22.9 %
- Belts: 1,553 tons, 7.7 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 779 tons, 3.9 %
- Armour Deck: 2,197 tons, 10.9 %
- Conning Tower: 96 tons, 0.5 %
Machinery: 4,728 tons, 23.4 %
Hull, fittings & equipment: 8,630 tons, 42.7 %
Fuel, ammunition & stores: 1,708 tons, 8.5 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
28,034 lbs / 12,716 Kg = 72.0 x 9.2 " / 234 mm shells or 2.4 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 4.5 ft / 1.4 m
Roll period: 15.9 seconds
Steadiness - As gun platform (Average = 50 %): 57 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 1.14
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.534 / 0.538
Length to Beam Ratio: 9.00 : 1
'Natural speed' for length: 26.83 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 7.00 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, 29.00 ft / 8.84 m
- Forward deck: 30.00 %, 29.00 ft / 8.84 m, 27.00 ft / 8.23 m
- Aft deck: 35.00 %, 27.00 ft / 8.23 m, 25.00 ft / 7.62 m
- Quarter deck: 15.00 %, 25.00 ft / 7.62 m, 23.00 ft / 7.01 m
- Average freeboard: 27.14 ft / 8.27 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 95.4 %
- Above water (accommodation/working, high = better): 240.0 %
Waterplane Area: 39,587 Square feet or 3,678 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 140 lbs/sq ft or 683 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.58
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
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Saturday, March 03, 2007
The GB/CA/1941 is a super ship that works well in Springsharp
I have this pencil drawing, dated from the 1980's of the GB/CB/1941, which has considerable specifications, as well as the pencil drawing. I implemented the ship in Springsharp 3.0b Beta, and the ship works very well. The cruiser is armed with 9-9.2in/50 guns and has a top speed of 35 knots. I will post the drawing quite soon, as it is memorable. The armour basis is 5in. This is the Springsharp report:
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