Ships in Class
Andrea Doria Laid down 1939
Marcantonio Colonna Laid down 1941
Displacement:
37,911 t light; 39,237 t standard; 44,435 t normal; 48,593 t full load
Dimensions: Length overall / water x beam x draught
936.89 ft / 885.83 ft x 110.56 ft x 34.45 ft (normal load)
285.56 m / 270.00 m x 33.70 m x 10.50 m
Armament:
16 - 3.00" / 76.2 mm guns in single mounts, 14.86lbs / 6.74kg shells, 1940 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, evenly spread
56 - 1.46" / 37.0 mm guns (14 mounts), 1.65lbs / 0.75kg shells, 1939 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 26 raised guns - superfiring
Weight of broadside 330 lbs / 150 kg
Shells per gun, main battery: 2,000
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.42" / 36 mm 620.08 ft / 189.00 m 13.12 ft / 4.00 m
Ends: 1.42" / 36 mm 265.72 ft / 80.99 m 13.12 ft / 4.00 m
Upper: 1.42" / 36 mm 688.98 ft / 210.00 m 32.81 ft / 10.00 m
Main Belt covers 108 % of normal length
- Torpedo Bulkhead:
2.36" / 60 mm 620.08 ft / 189.00 m 41.01 ft / 12.50 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.79" / 20 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -
- Armour deck: 2.68" / 68 mm, Conning tower: 2.76" / 70 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 180,000 shp / 134,280 Kw = 33.01 kts
Range 6,000nm at 25.00 kts
Bunker at max displacement = 9,357 tons
Complement:
1,529 - 1,989
Cost:
£11.898 million / $47.593 million
Distribution of weights at normal displacement:
Armament: 43 tons, 0.1 %
Armour: 7,561 tons, 17.0 %
- Belts: 1,977 tons, 4.4 %
- Torpedo bulkhead: 2,223 tons, 5.0 %
- Armament: 43 tons, 0.1 %
- Armour Deck: 3,244 tons, 7.3 %
- Conning Tower: 74 tons, 0.2 %
Machinery: 4,870 tons, 11.0 %
Hull, fittings & equipment: 12,809 tons, 28.8 %
Fuel, ammunition & stores: 6,524 tons, 14.7 %
Miscellaneous weights: 12,627 tons, 28.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
64,933 lbs / 29,453 Kg = 4,809.9 x 3.0 " / 76 mm shells or 11.3 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 7.3 ft / 2.2 m
Roll period: 17.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 1.62
Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0.461
Length to Beam Ratio: 8.01 : 1
'Natural speed' for length: 34.77 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 37.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 59.06 ft / 18.00 m
- Forecastle (20 %): 59.06 ft / 18.00 m (21.33 ft / 6.50 m aft of break)
- 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: 28.87 ft / 8.80 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 84.3 %
- Above water (accommodation/working, high = better): 174.0 %
Waterplane Area: 65,505 Square feet or 6,086 Square metres
Displacement factor (Displacement / loading): 147 %
Structure weight / hull surface area: 134 lbs/sq ft or 656 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.23
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
- Armoured deck - multiple decks: 2.95" / 75 mm For and Aft decks
Forecastle: 0.00" / 0 mm Quarter deck: 1.57" / 40 mm
10240t Airgroup, Space for 101 aircraft
500t extra ordnance
2 x C-39 hydraulic catapults (58m stroke)
9 x 15000kg arrestor wires
3 elevators 18 x 15m
200t Aircraft operations centre
50t RaA.6 Air Search radar
20t RaA.5 Air Search radar
20t RaS.4 Surface Search radar x2
30t 2 x GDR1R FC Systems
30t 6 x GDR5 FC Systems
Armour
50mm Gallery Deck 170 x 30 1997t
50mm Hangar Deck
25mm splinter deck