Ships in Class
Tripolitania Laid down 1937
Cirenaica Laid down 1937
Displacement:
45,113 t light; 47,675 t standard; 51,780 t normal; 55,064 t full load
Dimensions: Length overall / water x beam x draught
847.61 ft / 820.21 ft x 108.27 ft (Bulges 111.55 ft) x 34.45 ft (normal load)
258.35 m / 250.00 m x 33.00 m (Bulges 34.00 m) x 10.50 m
Armament:
12 - 15.00" / 381 mm guns (4x3 guns), 1,951.09lbs / 885.00kg shells, 1937 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 5.98" / 152 mm guns (6x2 guns), 99.21lbs / 45.00kg shells, 1937 Model
Dual purpose guns in turrets (on barbettes)
on side, evenly spread
56 - 1.46" / 37.0 mm guns (14x4 guns), 1.65lbs / 0.75kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
18 - 0.98" / 25.0 mm guns in single mounts, 0.53lbs / 0.24kg shells, 1937 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 24,706 lbs / 11,206 kg
Shells per gun, main battery: 110
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 16.1" / 410 mm 465.88 ft / 142.00 m 13.12 ft / 4.00 m
Ends: 2.36" / 60 mm 88.58 ft / 27.00 m 13.12 ft / 4.00 m
265.75 ft / 81.00 m Unarmoured ends
Upper: 2.76" / 70 mm 465.88 ft / 142.00 m 11.48 ft / 3.50 m
Main Belt covers 87 % of normal length
- Torpedo Bulkhead and Bulges:
1.97" / 50 mm 465.88 ft / 142.00 m 30.18 ft / 9.20 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.0" / 380 mm 9.06" / 230 mm 11.8" / 300 mm
2nd: 5.31" / 135 mm 2.76" / 70 mm 2.76" / 70 mm
3rd: 0.39" / 10 mm 0.39" / 10 mm -
- Armour deck: 5.13" / 130 mm, Conning tower: 2.76" / 70 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 160,000 shp / 119,360 Kw = 30.62 kts
Range 4,000nm at 25.00 kts
Bunker at max displacement = 7,390 tons
Complement:
1,716 - 2,231
Cost:
£24.387 million / $97.550 million
Distribution of weights at normal displacement:
Armament: 2,704 tons, 5.2 %
Armour: 16,665 tons, 32.2 %
- Belts: 5,103 tons, 9.9 %
- Torpedo bulkhead: 1,024 tons, 2.0 %
- Armament: 4,181 tons, 8.1 %
- Armour Deck: 6,274 tons, 12.1 %
- Conning Tower: 82 tons, 0.2 %
Machinery: 4,435 tons, 8.6 %
Hull, fittings & equipment: 20,989 tons, 40.5 %
Fuel, ammunition & stores: 6,667 tons, 12.9 %
Miscellaneous weights: 320 tons, 0.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
70,658 lbs / 32,050 Kg = 41.9 x 15.0 " / 381 mm shells or 10.5 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 6.7 ft / 2.1 m
Roll period: 18.0 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.68
Seaboat quality (Average = 1.00): 1.03
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.575
Length to Beam Ratio: 7.35 : 1
'Natural speed' for length: 33.23 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 36.09 ft / 11.00 m
- Forecastle (20 %): 22.97 ft / 7.00 m
- Mid (50 %): 21.33 ft / 6.50 m
- Quarterdeck (15 %): 21.33 ft / 6.50 m
- Stern: 21.33 ft / 6.50 m
- Average freeboard: 22.95 ft / 7.00 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 84.4 %
- Above water (accommodation/working, high = better): 159.2 %
Waterplane Area: 66,088 Square feet or 6,140 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 230 lbs/sq ft or 1,123 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.01
- Longitudinal: 1.31
- Overall: 1.04
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
10t RaS.3 Surface Warning Radar
30t RaA.2 Air Search Radar and IFF
20t RaS.50 Surface Gunnery Radar x2
60t GDR1 FCS Systems with RaA.50 radar x4
100t CIC
100t Extra diesel emergency generators
Deck
60mm forwards, 36+155 machinery, 36+155 magazines, 155mm box aft
Belt
70+280@15 + 36 + 24
60 splinter proofing forwards
Barbette 350-280mm
Originaly by Red Admiral