It/CL/1942, Italy Light Cruiser laid down 1942 (Engine 1950)
Displacement:
7,691 t light; 7,935 t standard; 8,604 t normal; 9,139 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(586.59 ft / 580.00 ft) x 55.00 ft x (20.00 / 20.87 ft)
(178.79 m / 176.78 m) x 16.76 m x (6.10 / 6.36 m)
Armament:
9 - 5.30" / 135 mm 50.0 cal guns - 78.00lbs / 35.38kg shells, 150 per gun
Dual purpose guns in turret on barbette mounts, 1942 Model
3 x Triple mounts on centreline ends, majority forward
1 raised mount - superfiring
8 - 2.24" / 57.0 mm 70.0 cal guns - 6.00lbs / 2.72kg shells, 0 per gun
Anti-air guns in deck and hoist mounts, 1942 Model
4 x Twin mounts on sides, forward deck aft
4 raised mounts
12 - 1.46" / 37.0 mm 70.0 cal guns - 1.75lbs / 0.79kg shells, 150 per gun
Breech loading guns in deck mounts, 1942 Model
6 x Twin mounts on sides, aft deck forward
6 raised mounts
Weight of broadside 771 lbs / 350 kg
8 - 21.0" / 533 mm, 22.00 ft / 6.71 m torpedoes - 1.509 t each, 12.073 t total
In 2 sets of deck mounted side rotating tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.00" / 51 mm 380.00 ft / 115.82 m 12.00 ft / 3.66 m
Ends: Unarmoured
Main Belt covers 101 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
0.60" / 15 mm 380.00 ft / 115.82 m 20.00 ft / 6.10 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
- Armoured deck - single deck: 1.00" / 25 mm For and Aft decks
Forecastle: 1.00" / 25 mm Quarter deck: 1.00" / 25 mm
- Conning towers: Forward 2.00" / 51 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 117,970 shp / 88,006 Kw = 37.00 kts
Range 5,400nm at 16.00 kts
Bunker at max displacement = 1,204 tons
Complement:
446 - 580
Cost:
£4.771 million / $19.084 million
Distribution of weights at normal displacement:
Armament: 231 tons, 2.7 %
- Guns: 219 tons, 2.5 %
- Torpedoes: 12 tons, 0.1 %
Armour: 1,077 tons, 12.5 %
- Belts: 372 tons, 4.3 %
- Torpedo bulkhead: 169 tons, 2.0 %
- Armament: 116 tons, 1.3 %
- Armour Deck: 402 tons, 4.7 %
- Conning Tower: 18 tons, 0.2 %
Machinery: 2,822 tons, 32.8 %
Hull, fittings & equipment: 3,561 tons, 41.4 %
Fuel, ammunition & stores: 913 tons, 10.6 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8,846 lbs / 4,012 Kg = 118.8 x 5.3 " / 135 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 2.6 ft / 0.8 m
Roll period: 14.2 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.31
Seaboat quality (Average = 1.00): 1.10
Hull form characteristics:
Hull has a flush deck,
an extended bulbous bow and large transom stern
Block coefficient (normal/deep): 0.472 / 0.480
Length to Beam Ratio: 10.55 : 1
'Natural speed' for length: 27.46 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 9.00 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 %, 29.00 ft / 8.84 m, 25.00 ft / 7.62 m
- Forward deck: 30.00 %, 25.00 ft / 7.62 m, 22.00 ft / 6.71 m
- Aft deck: 34.00 %, 22.00 ft / 6.71 m, 19.00 ft / 5.79 m
- Quarter deck: 16.00 %, 19.00 ft / 5.79 m, 19.00 ft / 5.79 m
- Average freeboard: 22.38 ft / 6.82 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 181.7 %
- Above water (accommodation/working, high = better): 196.6 %
Waterplane Area: 21,544 Square feet or 2,001 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 94 lbs/sq ft or 457 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.17
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
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Wednesday, March 12, 2008
A fast Italian cruiser: It/CL/1942
I wanted my 1942 Italian light cruiser to be pretty fast, but to have some protection. I wanted more than the Capitani Romani class. I have 9-5.3in DP guns, 8-57mm AA guns, 12-37mm AA guns, and 8-21in TT. The speed is 37 knots. The ship can theoretically survive one torpedo hit. This is the Springsharp report:
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