WesWorld

1909, Dante Alighieri

Ships in class; Dante Alighieri

Transferred to Turkey in 1926

Returned to Italy 1929

Scrapped 1931, Main turrets refitted and stored





Dante Alighieri, Italian Battleship laid down 1909

Displacement:
19,751 t light; 21,124 t standard; 22,250 t normal; 23,062 t full load
Loading submergence 928 tons/feet

Dimensions:
557.74 ft x 86.94 ft x 29.20 ft (normal load)
170.00 m x 26.50 m x 8.90 m

Armament:
12 - 12" / 46 M1909 guns in 4 triple centreline turrets
20 - 100mm / 40 guns in 4 duple turrets and 12 single casemates
12 - 3" / 40 AA guns
Weight of broadside 11,140 lbs / 5,053 kg
Armour:
Belt 9.84" / 250 mm, upper belt 6.69" / 170 mm, end belts 3.94" / 100 mm
Belts cover 102 % of normal area
Main turrets 9.84" / 250 mm, 2nd turrets 1.97" / 50 mm
Armour deck 3.54" / 90 mm, Conning tower 11.02" / 280 mm
Torpedo bulkhead 1.97" / 50 mm

Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 4 shafts, 42,000 shp / 31,332 Kw = 23.14 kts
Range 6,000nm at 10.00 kts

Complement:
910 - 1,184

Cost:
£2.146 million / $8.586 million

Distribution of weights at normal displacement:
Armament: 1,393 tons, 6.3 %
Armour: 8,230 tons, 37.0 %
Belts: 2,940 tons, 13.2 %, Armament: 2,202 tons, 9.9 %, Armour Deck: 2,130 tons, 9.6 %
Conning Tower: 188 tons, 0.8 %, Torpedo bulkhead: 771 tons, 3.5 %
Machinery: 2,039 tons, 9.2 %
Hull, fittings & equipment: 8,089 tons, 36.4 %
Fuel, ammunition & stores: 2,500 tons, 11.2 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 4.9

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is adequate

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.11
Shellfire needed to sink: 19,016 lbs / 8,625 Kg = 22.0 x 12.0 " / 305 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 3.0
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 53 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.57
Relative quality as seaboat: 1.12

Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.40
Hull speed coefficient 'M': 6.07
'Natural speed' for length: 23.62 kts
Power going to wave formation at top speed: 49 %
Trim: 47
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 101.9 %
Relative accommodation and working space: 111.5 %
(Average = 100%)
Displacement factor: 95 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.98
(Structure weight / hull surface area: 172 lbs / square foot or 841 Kg / square metre)
Relative longitudinal hull strength: 1.50
(for 16.40 ft / 5.00 m average freeboard, freeboard adjustment -1.37 ft)
Relative composite hull strength: 1.02

1910, Conte di Cavour Class

Ships in class;
Conte di Cavour, Laid down 1910, Commenced Scrapping 1934

Guilio Cesare, Laid down 1910, Sold to Poland 1935





Conte De Cavour, Italian Battleship laid down 1910

Displacement:
20,207 t light; 21,678 t standard; 22,669 t normal; 23,371 t full load
Loading submergence 1,028 tons/feet

Dimensions:
557.74 ft x 91.86 ft x 26.25 ft (normal load)
170.00 m x 28.00 m x 8.00 m

Armament:
13 - 12" / 46 guns in 3 triple turrets and 2 superfiring duple turrets
12 - 130mm / 50 guns in 12 single casemates above deck
13 - 3" / 40 AA guns on turrets
Weight of broadside 12,212 lbs / 5,539 kg

Armour:
Belt 9.84" / 250 mm, upper belt 5.12" / 130 mm, end belts 2.95" / 75 mm
Belts cover 92 % of normal area
Main turrets 11.02" / 280 mm, 2nd gun shields 1.84" / 50 mm
Armour deck 3.54" / 90 mm, Conning tower 11.02" / 280 mm
Torpedo bulkhead 1.38" / 35 mm

Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 4 shafts, 32,000 shp / 23,872 Kw = 21.35 kts
Range 4,000nm at 12.00 kts

Complement:
923 - 1,200

Cost:
£2.182 million / $8.727 million

Distribution of weights at normal displacement:
Armament: 1,526 tons, 6.7 %
Armour: 8,605 tons, 38.0 %
Belts: 2,472 tons, 10.9 %, Armament: 3,098 tons, 13.7 %, Armour Deck: 2,358 tons, 10.4 %
Conning Tower: 191 tons, 0.8 %, Torpedo bulkhead: 485 tons, 2.1 %
Machinery: 1,374 tons, 6.1 %
Hull, fittings & equipment: 8,702 tons, 38.4 %
Fuel, ammunition & stores: 2,462 tons, 10.9 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 4.9

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is adequate

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 21,108 lbs / 9,574 Kg = 24.4 x 12.0 " / 305 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 3.5
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 51 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.50
Relative quality as seaboat: 1.07

Hull form characteristics:
Block coefficient: 0.590
Sharpness coefficient: 0.42
Hull speed coefficient 'M': 6.03
'Natural speed' for length: 23.62 kts
Power going to wave formation at top speed: 46 %
Trim: 48
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 92.2 %
Relative accommodation and working space: 110.8 %
(Average = 100%)
Displacement factor: 96 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.98
(Structure weight / hull surface area: 181 lbs / square foot or 883 Kg / square metre)
Relative longitudinal hull strength: 1.19
(for 14.93 ft / 4.55 m average freeboard, freeboard adjustment -2.91 ft)
Relative composite hull strength: 1.00

1912, Caio Duilio Class

Ships in class;
Caio Duilio, Laid down 1912 (92), Scrapped 1941

Andrea Doria, Laid down 1912, Sold to Poland 1940





Caio Duilio, Italian Battleship laid down 1912

Displacement:
20,794 t light; 22,355 t standard; 23,293 t normal; 23,951 t full load
Loading submergence 995 tons/feet

Dimensions:
557.74 ft x 91.21 ft x 28.22 ft (normal load)
170.00 m x 27.80 m x 8.60 m

Armament:
13 - 12" / 46 guns in 3 triple turrets and 2 superfiring duple turrets
16 - 6" / 45 guns in single casemates mounted low
13 - 3" / 40 AA guns on turrets
Weight of broadside 13,136 lbs / 5,958 kg


Armour:
Belt 9.84" / 250 mm, upper belt 5.12" / 130 mm, end belts 2.95" / 75 mm
Belts cover 95 % of normal area
Main turrets 11.02" / 280 mm, 2nd casemates 1.97" / 50 mm
Armour deck 3.94" / 100 mm, Conning tower 11.02" / 280 mm
Torpedo bulkhead 1.38" / 35 mm

Machinery:
Coal fired boilers, steam turbines,
Geared drive, 2 shafts, 32,000 shp / 23,872 Kw = 21.33 kts
Range 5,000nm at 10.00 kts

Complement:
942 - 1,225

Cost:
£2.304 million / $9.214 million

Distribution of weights at normal displacement:
Armament: 1,642 tons, 7.0 %
Armour: 8,925 tons, 38.3 %
Belts: 2,543 tons, 10.9 %, Armament: 3,130 tons, 13.4 %, Armour Deck: 2,536 tons, 10.9 %
Conning Tower: 194 tons, 0.8 %, Torpedo bulkhead: 522 tons, 2.2 %
Machinery: 1,404 tons, 6.0 %
Hull, fittings & equipment: 8,824 tons, 37.9 %
Fuel, ammunition & stores: 2,499 tons, 10.7 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 4.7

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is adequate

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.04
Shellfire needed to sink: 20,286 lbs / 9,201 Kg = 23.5 x 12.0 " / 305 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 3.3
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 50 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.54
Relative quality as seaboat: 1.08

Hull form characteristics:
Block coefficient: 0.568
Sharpness coefficient: 0.42
Hull speed coefficient 'M': 5.97
'Natural speed' for length: 23.62 kts
Power going to wave formation at top speed: 46 %
Trim: 46
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 95.2 %
Relative accommodation and working space: 104.0 %
(Average = 100%)
Displacement factor: 94 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.97
(Structure weight / hull surface area: 185 lbs / square foot or 902 Kg / square metre)
Relative longitudinal hull strength: 1.27
(for 14.76 ft / 4.50 m average freeboard, freeboard adjustment -3.17 ft)
Relative composite hull strength: 1.00

1914, Francesco Caracciolo Class

Ships in class;

Francesco Caracciolo, Laid down 1914, relaid 1920, refitted 1928 (sold to Romania 1940)

Cristoforto Columbo, Laid down 1914, relaid 1920, partial reconstruction 1931

Marcantonio Colonna, Laid down 1914, cancelled 1920

Francesco Morosini Laid down 1914, converted to aircraft carrier 1920



[size=3]Original Design[/size]

Francesco Caracciolo , Italian Battleship laid down 1914 (Engine 1920)

Displacement:
30,121 t light; 31,660 t standard; 33,504 t normal; 34,979 t full load

Dimensions: Length overall / water x beam x draught
705.86 ft / 695.54 ft x 97.11 ft x 31.17 ft (normal load)
215.15 m / 212.00 m x 29.60 m x 9.50 m

Armament:
8 - 381mm/40 guns (4x2 guns), 1,940.07lbs / 880.00kg shells, 1914 Model
Breech loading guns in turrets (on barbettes)
on centreline, evenly spread, 2 raised mounts
Aft Main mounts separated by engine room
12 - 152mm/45 guns in single mounts, 110.23lbs / 50.00kg shells, 1914 Model
Breech loading guns in casemate mounts
on side, all amidships
8 - 100mm/40 guns in single mounts, 30.51lbs / 13.84kg shells, 1914 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
12 - 0.54" / 13.7 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1914 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 17,088 lbs / 7,751 kg
Shells per gun, main battery: 90

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.8" / 300 mm 444.55 ft / 135.50 m 11.81 ft / 3.60 m
Ends: 5.91" / 150 mm 164.04 ft / 50.00 m 11.81 ft / 3.60 m
86.94 ft / 26.50 m Unarmoured ends
Upper: 8.66" / 220 mm 310.04 ft / 94.50 m 9.84 ft / 3.00 m
Main Belt covers 98 % of normal length

- Torpedo Bulkhead:
1.38" / 35 mm 444.55 ft / 135.50 m 28.97 ft / 8.83 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.7" / 400 mm 7.87" / 200 mm 11.8" / 300 mm
2nd: 3.94" / 100 mm - -
3rd: 0.79" / 20 mm - -

- Armour deck: 3.54" / 90 mm, Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 105,000 shp / 78,330 Kw = 28.01 kts
Range 3,000nm at 20.00 kts (Bunkerage = 3,319 tons)

Complement:
1,237 - 1,609

Cost:
£4.006 million / $16.024 million

Distribution of weights at normal displacement:
Armament: 1,880 tons, 5.6 %
Armour: 11,157 tons, 33.3 %
- Belts: 4,349 tons, 13.0 %
- Torpedo bulkhead: 657 tons, 2.0 %
- Armament: 2,979 tons, 8.9 %
- Armour Deck: 3,110 tons, 9.3 %
- Conning Tower: 62 tons, 0.2 %
Machinery: 3,671 tons, 11.0 %
Hull, fittings & equipment: 13,413 tons, 40.0 %
Fuel, ammunition & stores: 3,383 tons, 10.1 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
32,004 lbs / 14,517 Kg = 19.0 x 15.0 " / 381 mm shells or 4.2 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 5.5 ft / 1.7 m
Roll period: 17.4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.75
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.557
Length to Beam Ratio: 7.16 : 1
'Natural speed' for length: 26.37 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (19 %): 20.01 ft / 6.10 m
- Mid (50 %): 20.01 ft / 6.10 m
- Quarterdeck (19 %): 20.01 ft / 6.10 m
- Stern: 20.01 ft / 6.10 m
- Average freeboard: 20.11 ft / 6.13 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 98.3 %
- Above water (accommodation/working, high = better): 146.2 %
Waterplane Area: 47,450 Square feet or 4,408 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 200 lbs/sq ft or 979 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.37
- Overall: 1.01
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

[size=3]Francesco Caracciolo, refitted 1928[/size]

- Angle of gun elevation increased to 35degrees.
- New 885kg shells for guns
- New superstructure and directors
- Removal of casemated 152mm guns. Replacement with 100/65 AA guns
- Funnel caps added
- Additional bunkerage



Displacement:
29,745 t light; 31,438 t standard; 34,209 t normal; 36,426 t full load

Dimensions: Length overall / water x beam x draught
706.61 ft / 695.54 ft x 97.11 ft x 31.82 ft (normal load)
215.38 m / 212.00 m x 29.60 m x 9.70 m

Armament:
8 - 381mm/40 guns (4x2 guns), 1,951.09lbs / 885.00kg shells, 1914 Model
Breech loading guns in turrets (on barbettes)
on centreline, evenly spread, 2 raised mounts
Aft Main mounts separated by engine room
20 - 100mm/65 guns (10x2 guns), 33.07lbs / 15.00kg shells, 1914 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
12 - 1.85" / 47.0 mm guns (4x3 guns), 3.17lbs / 1.44kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 16,308 lbs / 7,397 kg
Shells per gun, main battery: 110

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.8" / 300 mm 444.55 ft / 135.50 m 11.81 ft / 3.60 m
Ends: 5.91" / 150 mm 164.04 ft / 50.00 m 11.81 ft / 3.60 m
86.94 ft / 26.50 m Unarmoured ends
Upper: 8.66" / 220 mm 310.04 ft / 94.50 m 9.84 ft / 3.00 m
Main Belt covers 98 % of normal length

- Torpedo Bulkhead:
1.38" / 35 mm 444.55 ft / 135.50 m 28.97 ft / 8.83 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.7" / 400 mm 7.87" / 200 mm 11.8" / 300 mm
3rd: 1.18" / 30 mm 0.98" / 25 mm -
4th: 0.79" / 20 mm - -

- Armour deck: 3.60" / 91 mm, Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 105,000 shp / 78,330 Kw = 27.92 kts
Range 4,600nm at 20.00 kts
Bunker at max displacement = 4,989 tons

Complement:
1,257 - 1,635

Cost:
£3.870 million / $15.480 million

Distribution of weights at normal displacement:
Armament: 1,769 tons, 5.2 %
Armour: 11,037 tons, 32.3 %
- Belts: 4,348 tons, 12.7 %
- Torpedo bulkhead: 657 tons, 1.9 %
- Armament: 2,811 tons, 8.2 %
- Armour Deck: 3,158 tons, 9.2 %
- Conning Tower: 63 tons, 0.2 %
Machinery: 3,671 tons, 10.7 %
Hull, fittings & equipment: 13,169 tons, 38.5 %
Fuel, ammunition & stores: 4,464 tons, 13.0 %
Miscellaneous weights: 100 tons, 0.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
41,679 lbs / 18,905 Kg = 24.7 x 15.0 " / 381 mm shells or 6.1 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 5.5 ft / 1.7 m
Roll period: 17.4 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.72
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.557
Length to Beam Ratio: 7.16 : 1
'Natural speed' for length: 26.37 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.59 ft / 7.80 m
- Forecastle (20 %): 20.67 ft / 6.30 m
- Mid (50 %): 19.03 ft / 5.80 m
- Quarterdeck (15 %): 19.03 ft / 5.80 m
- Stern: 20.67 ft / 6.30 m
- Average freeboard: 20.12 ft / 6.13 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 94.5 %
- Above water (accommodation/working, high = better): 139.5 %
Waterplane Area: 47,450 Square feet or 4,408 Square metres
Displacement factor (Displacement / loading): 105 %
Structure weight / hull surface area: 196 lbs/sq ft or 956 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.37
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

[size=3]Cristoforto Columbo reconstructed 1931[/size]



Cristoforto Columbo, Italian Battleship laid down 1914 (Engine 1931)

Displacement:
32,083 t light; 33,898 t standard; 38,103 t normal; 41,467 t full load

Dimensions: Length overall / water x beam x draught
732.86 ft / 721.78 ft x 97.11 ft (Bulges 103.67 ft) x 31.82 ft (normal load)
223.38 m / 220.00 m x 29.60 m (Bulges 31.60 m) x 9.70 m

Armament:
8 - 15.00" / 381 mm guns (4x2 guns), 1,951.09lbs / 885.00kg shells, 1914 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 5.31" / 135 mm guns (8x2 guns), 79.37lbs / 36.00kg shells, 1931 Model
Breech loading guns in deck mounts with hoists
on side, all amidships, 4 raised mounts - superfiring
35 - 1.46" / 37.0 mm guns (11 mounts), 1.83lbs / 0.83kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 16 raised guns
Weight of broadside 16,943 lbs / 7,685 kg
Shells per gun, main battery: 110

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.8" / 350 mm 442.91 ft / 135.00 m 11.81 ft / 3.60 m
Ends: 1.97" / 50 mm 164.04 ft / 50.00 m 11.81 ft / 3.60 m
114.83 ft / 35.00 m Unarmoured ends
Upper: 1.97" / 50 mm 442.91 ft / 135.00 m 8.20 ft / 2.50 m
Main Belt covers 94 % of normal length

- Torpedo Bulkhead and Bulges:
2.76" / 70 mm 442.91 ft / 135.00 m 29.53 ft / 9.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.7" / 400 mm 7.87" / 200 mm 11.8" / 300 mm
3rd: 1.97" / 50 mm 0.79" / 20 mm -
4th: 0.39" / 10 mm 0.39" / 10 mm -

- Armour deck: 5.12" / 130 mm, Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 110,000 shp / 82,060 Kw = 27.83 kts
Range 4,600nm at 24.00 kts
Bunker at max displacement = 7,569 tons

Complement:
1,363 - 1,772

Cost:
£3.987 million / $15.948 million

Distribution of weights at normal displacement:
Armament: 1,844 tons, 4.8 %
Armour: 12,513 tons, 32.8 %
- Belts: 3,584 tons, 9.4 %
- Torpedo bulkhead: 1,334 tons, 3.5 %
- Armament: 2,852 tons, 7.5 %
- Armour Deck: 4,675 tons, 12.3 %
- Conning Tower: 67 tons, 0.2 %
Machinery: 3,289 tons, 8.6 %
Hull, fittings & equipment: 14,136 tons, 37.1 %
Fuel, ammunition & stores: 6,020 tons, 15.8 %
Miscellaneous weights: 300 tons, 0.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
51,806 lbs / 23,499 Kg = 30.7 x 15.0 " / 381 mm shells or 9.1 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 5.8 ft / 1.8 m
Roll period: 18.1 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.62
Seaboat quality (Average = 1.00): 1.09

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.560
Length to Beam Ratio: 6.96 : 1
'Natural speed' for length: 26.87 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 55
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.59 ft / 7.80 m
- Forecastle (20 %): 20.67 ft / 6.30 m
- Mid (50 %): 19.03 ft / 5.80 m
- Quarterdeck (15 %): 19.03 ft / 5.80 m
- Stern: 20.67 ft / 6.30 m
- Average freeboard: 20.12 ft / 6.13 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 83.6 %
- Above water (accommodation/working, high = better): 133.9 %
Waterplane Area: 49,379 Square feet or 4,587 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 199 lbs/sq ft or 970 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.28
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

8xquadruple 37mm mounts = 80tons

1921, Lepanto (Projetto G'' ) Class Battleship

Ships in class;
Lepanto, Laid down 1921



RM Lepanto, Italian Battleship laid down 1921

Displacement:
37,479 t light; 40,159 t standard; 44,593 t normal; 48,141 t full load

Dimensions: Length overall / water x beam x draught
775.70 ft / 765.09 ft x 106.82 ft x 34.28 ft (normal load)
236.43 m / 233.20 m x 32.56 m x 10.45 m

Armament:
16 - 381mm / 40 guns (4x4 guns), 1,951.09lbs / 885.00kg shells, 1921 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
24 - 100mm / 47 guns in single mounts, 30.42lbs / 13.80kg shells, 1921 Model
Quick firing guns in deck mounts
on side, all forward
16 - 37mm / 40 guns (8x2 guns), 1.83lbs / 0.83kg shells, 1921 Model
Anti-aircraft guns in deck mounts
on side, all forward
24 - 13.2mm Machine guns (12x2 guns), 0.07lbs / 0.03kg shells, 1921 Model
Weight of broadside 31,978 lbs / 14,505 kg
Shells per gun, main battery: 100

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.8" / 350 mm 492.13 ft / 150.00 m 11.81 ft / 3.60 m
Ends: Unarmoured
Main Belt covers 99 % of normal length

- Torpedo Bulkhead:
1.38" / 35 mm 492.13 ft / 150.00 m 31.63 ft / 9.64 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.7" / 400 mm 9.06" / 230 mm 11.8" / 300 mm

- Armour deck: 4.05" / 103 mm, Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 80,000 shp / 59,680 Kw = 25.15 kts
Range 6,500nm at 20.00 kts
Bunker at max displacement = 7,982 tons

Complement:
1,533 - 1,994

Cost:
£11.740 million / $46.960 million

Distribution of weights at normal displacement:
Armament: 3,470 tons, 7.8 %
Armour: 11,973 tons, 26.9 %
- Belts: 3,460 tons, 7.8 %
- Torpedo bulkhead: 794 tons, 1.8 %
- Armament: 3,340 tons, 7.5 %
- Armour Deck: 4,305 tons, 9.7 %
- Conning Tower: 75 tons, 0.2 %
Machinery: 2,755 tons, 6.2 %
Hull, fittings & equipment: 19,231 tons, 43.1 %
Fuel, ammunition & stores: 7,115 tons, 16.0 %
Miscellaneous weights: 50 tons, 0.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
47,393 lbs / 21,497 Kg = 28.1 x 15.0 " / 381 mm shells or 6.9 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 6.7 ft / 2.0 m
Roll period: 17.4 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.80
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.557
Length to Beam Ratio: 7.16 : 1
'Natural speed' for length: 27.66 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.97 ft / 7.00 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (59 %): 19.69 ft / 6.00 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 16.58 ft / 5.06 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 97.5 %
- Above water (accommodation/working, high = better): 117.0 %
Waterplane Area: 57,414 Square feet or 5,334 Square metres
Displacement factor (Displacement / loading): 98 %
Structure weight / hull surface area: 249 lbs/sq ft or 1,216 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.01
- Longitudinal: 1.17
- Overall: 1.03
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate



Lepanto, Rebuilt 1935

A rebuilding in the mid 1930s in order to keep pace with developments elsewhere. Changes include;
-New bow adding length
-Bulges
-New boilers and turbines for increased speed, funnels reduced in number to two
-New superstructure similar to that on Italia
-New armourscheme with heavier deck armour and internal 150mm belt
-New secondary armament of 100/65 and 47mm AA guns

Lepanto, Italian Battleship laid down 1921 (Engine 1935)

Displacement:
41,440 t light; 44,427 t standard; 49,005 t normal; 52,668 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(828.74 ft / 803.81 ft) x 104.99 ft (Bulges 114.83 ft) x (31.50 / 33.59 ft)
(252.60 m / 245.00 m) x 32.00 m (Bulges 35.00 m) x (9.60 / 10.24 m)

Armament:
16 - 15.00" / 381 mm 40.0 cal guns - 1,951.09lbs / 885.00kg shells, 100 per gun
Breech loading guns in turret on barbette mounts, 1921 Model
4 x 4-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
12 - 3.94" / 100.0 mm 65.0 cal guns - 33.07lbs / 15.00kg shells, 500 per gun
Anti-air guns in deck and hoist mounts, 1935 Model
6 x Twin mounts on sides, evenly spread
36 - 1.85" / 47.0 mm 40.0 cal guns - 3.31lbs / 1.50kg shells, 2,000 per gun
Anti-air guns in deck mounts, 1921 Model
18 x Twin mounts on sides amidships
10 raised mounts
24 - 0.98" / 25.0 mm 70.0 cal guns - 0.55lbs / 0.25kg shells, 4,000 per gun
Machine guns in deck mounts, 1921 Model
24 x Single mounts on sides, evenly spread
Weight of broadside 31,747 lbs / 14,400 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.8" / 350 mm 492.13 ft / 150.00 m 12.30 ft / 3.75 m
Ends: Unarmoured
Main Belt covers 94 % of normal length

- Torpedo Bulkhead:
2.20" / 56 mm 492.13 ft / 150.00 m 32.81 ft / 10.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.7" / 400 mm 5.91" / 150 mm 11.8" / 300 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm -
3rd: 0.39" / 10 mm 0.39" / 10 mm -

- Armoured deck - single deck: 5.91" / 150 mm For and Aft decks
Forecastle: 1.57" / 40 mm Quarter deck: 3.94" / 100 mm

- Conning towers: Forward 2.76" / 70 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 120,000 shp / 89,520 Kw = 27.48 kts
Range 4,000nm at 25.00 kts
Bunker at max displacement = 8,242 tons

Complement:
1,646 - 2,140

Cost:
£10.529 million / $42.116 million

Distribution of weights at normal displacement:
Armament: 4,818 tons, 9.8 %
Armour: 14,359 tons, 29.3 %
- Belts: 3,594 tons, 7.3 %
- Torpedo bulkhead: 1,317 tons, 2.7 %
- Armament: 3,291 tons, 6.7 %
- Armour Deck: 6,078 tons, 12.4 %
- Conning Tower: 80 tons, 0.2 %
Machinery: 3,409 tons, 7.0 %
Hull, fittings & equipment: 18,755 tons, 38.3 %
Fuel, ammunition & stores: 7,565 tons, 15.4 %
Miscellaneous weights: 100 tons, 0.2 %
- Hull above water: 50 tons
- Above deck: 50 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
67,937 lbs / 30,816 Kg = 40.3 x 15.0 " / 381 mm shells or 11.8 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 7.6 ft / 2.3 m
Roll period: 17.5 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.70
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.590 / 0.595
Length to Beam Ratio: 7.00 : 1
'Natural speed' for length: 28.35 kts
Power going to wave formation at top speed: 48 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 31.82 ft / 9.70 m, 20.34 ft / 6.20 m
- Forward deck: 50.00 %, 20.34 ft / 6.20 m, 20.34 ft / 6.20 m
- Aft deck: 15.00 %, 11.81 ft / 3.60 m, 11.81 ft / 3.60 m
- Quarter deck: 15.00 %, 11.81 ft / 3.60 m, 11.81 ft / 3.60 m
- Average freeboard: 18.70 ft / 5.70 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 80.7 %
- Above water (accommodation/working, high = better): 130.0 %
Waterplane Area: 61,146 Square feet or 5,681 Square metres
Displacement factor (Displacement / loading): 116 %
Structure weight / hull surface area: 249 lbs/sq ft or 1,214 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.09
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent

Lower belt 150mm thick 1m deep = 352tons

1928 Vittorio Emanuele II Class

Ships in class;

Principe Eugenio di Savoia Laid down 1928, Cancelled 1928






RM Principe Eugenio di Savoia, Italian Battleship laid down 1928

Displacement:
38,787 t light; 40,947 t standard; 47,192 t normal; 52,188 t full load

Dimensions: Length overall / water x beam x draught
807.35 ft / 787.40 ft x 104.99 ft x 34.45 ft (normal load)
246.08 m / 240.00 m x 32.00 m x 10.50 m

Armament:
9 - 15.00" / 381 mm guns (3x3 guns), 1,951.09lbs / 885.00kg shells, 1928 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
18 - 5.12" / 130 mm guns (6x3 guns), 70.55lbs / 32.00kg shells, 1928 Model
Breech loading guns in deck mounts with hoists
on side ends, evenly spread, 2 raised mounts - superfiring
16 - 3.94" / 100 mm guns (8x2 guns), 33.07lbs / 15.00kg shells, 1928 Model
Anti-aircraft guns in deck mounts with hoists
on side, all amidships, 4 raised mounts - superfiring
18 - 1.85" / 47.0 mm guns (6x3 guns), 3.86lbs / 1.75kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
16 - 1.46" / 37.0 mm guns (4x4 guns), 1.55lbs / 0.70kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread
Weight of broadside 19,453 lbs / 8,824 kg
Shells per gun, main battery: 110

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.6" / 370 mm 439.63 ft / 134.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Upper: 2.76" / 70 mm 439.63 ft / 134.00 m 8.20 ft / 2.50 m
Main Belt covers 86 % of normal length

- Torpedo Bulkhead:
1.57" / 40 mm 439.63 ft / 134.00 m 34.45 ft / 10.50 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16.0" / 406 mm 9.84" / 250 mm 13.0" / 330 mm
2nd: 2.76" / 70 mm 1.97" / 50 mm -
3rd: 1.18" / 30 mm 0.79" / 20 mm -
4th: 0.39" / 10 mm - -
5th: 0.39" / 10 mm - -

- Armour deck: 5.54" / 141 mm, Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 160,000 shp / 119,360 Kw = 29.85 kts
Range 6,000nm at 24.00 kts
Bunker at max displacement = 11,241 tons

Complement:
1,600 - 2,081

Cost:
£14.647 million / $58.589 million

Distribution of weights at normal displacement:
Armament: 2,121 tons, 4.5 %
Armour: 14,423 tons, 30.6 %
- Belts: 4,165 tons, 8.8 %
- Torpedo bulkhead: 882 tons, 1.9 %
- Armament: 3,214 tons, 6.8 %
- Armour Deck: 6,083 tons, 12.9 %
- Conning Tower: 78 tons, 0.2 %
Machinery: 4,981 tons, 10.6 %
Hull, fittings & equipment: 17,163 tons, 36.4 %
Fuel, ammunition & stores: 8,404 tons, 17.8 %
Miscellaneous weights: 100 tons, 0.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
66,155 lbs / 30,007 Kg = 39.2 x 15.0 " / 381 mm shells or 9.3 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 7.2 ft / 2.2 m
Roll period: 16.4 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.62
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.580
Length to Beam Ratio: 7.50 : 1
'Natural speed' for length: 28.06 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.87 ft / 8.80 m
- Forecastle (20 %): 22.31 ft / 6.80 m
- Mid (50 %): 22.31 ft / 6.80 m
- Quarterdeck (20 %): 12.47 ft / 3.80 m (22.31 ft / 6.80 m before break)
- Stern: 12.47 ft / 3.80 m
- Average freeboard: 20.87 ft / 6.36 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 85.7 %
- Above water (accommodation/working, high = better): 157.6 %
Waterplane Area: 59,339 Square feet or 5,513 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 206 lbs/sq ft or 1,008 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.24
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Main belt is 300mm thick inclined at 15º with 70mm decapping plate

Deck armour;
25mm deck armour forward
25mm burster deck over citadel
130mm over machinery
150mm over magazines
150mm over steering gear
=140.75mm average thickness

1934, Littorio Class

Two vessels to be laid down as replacements for Conte di Cavour and Andrea Doria. Provisional names are Littorio and Vittorio Veneto. It is likely that a further two ships will be laid down over the next 5 years, probably to a slightly modified design.

The design builds on the cancelled VEIII class from 1928. The overall layout is similar but there are subtle design differences.

Hull: Slightly beamier for a wider TDS. No quarterdeck aft and generally higher freeboard to give better seakeeping.

Machinery: Same with 160,000shp on 4 shafts. Improvements to the hull form have allowed the maximum speed to be increased to around 31knts. Less bunkerage as the range of the previous ship was thought to be excessive. Triple rudders used instead of the old single rudder.

Superstructure: Generally larger. Moves away from the previous tower superstructure. Fitted with newer San Giorgio AA directors and a larger main rangefinder. (Electronics fit pictured as fitted 1937 with EC.2 and Lince)

Main Armament: Similar main armament with 9x381/50 guns in 3 triple turrets fore and aft.

Secondary Armament: New Dual-Purpose 152mm/53 guns fitted in twin mountings on the beam. They are thought to be generally superior for AA and ASuW use to the 135/45 triples.

AA armament: Increased since 1928 with newer 47mm guns and more of them. Will probably be fitted with some 20mm FFL guns in service in unpowered mountings.

Belt Armour: Main belt is thinner but improvements in quality mean that it's effectiveness is about the same. 70mm external decapping plate with 280mm outer hull plate inclined at 15°. Internal 36mm and 24mm splinter plates. 70mm upper belt armour and 60mm splinter armour forwards

Deck Armour: A 36mm plate runs over the weather deck with the main armoured deck two below. It is 135mm thick over the machinery and 155mm over the magazines. The steering gear has a 100mm thick armoured box.

Other armour: The main turrets have 380mm faces, 200mm roofs and 350mm rears. They are mounted on 350mm thick barbettes. Conning tower armour is just 70mm splinter plate so as not to detonate large calibre rounds.

Other notes: Quarterdeck is strengthened allowing for vertiplane landings.



Littorio Laid down 1934
Vittorio Veneto Laid down 1934
Roma Laid down 1935


Displacement:
40,026 t light; 42,125 t standard; 46,053 t normal; 49,196 t full load

Dimensions: Length overall / water x beam x draught
813.85 ft / 787.40 ft x 104.99 ft (Bulges 108.27 ft) x 33.46 ft (normal load)
248.06 m / 240.00 m x 32.00 m (Bulges 33.00 m) x 10.20 m

Armament:
9 - 15.00" / 381 mm guns (3x3 guns), 1,951.09lbs / 885.00kg shells, 1934 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
12 - 5.98" / 152 mm guns (6x2 guns), 99.21lbs / 45.00kg shells, 1934 Model
Dual purpose guns in turrets (on barbettes)
on side, all amidships
56 - 1.85" / 47.0 mm guns (14x4 guns), 3.86lbs / 1.75kg shells, 1934 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 18,966 lbs / 8,603 kg
Shells per gun, main battery: 110

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 16.1" / 410 mm 436.35 ft / 133.00 m 13.12 ft / 4.00 m
Ends: 2.36" / 60 mm 88.58 ft / 27.00 m 13.12 ft / 4.00 m
262.47 ft / 80.00 m Unarmoured ends
Upper: 2.76" / 70 mm 436.35 ft / 133.00 m 11.48 ft / 3.50 m
Main Belt covers 85 % of normal length

- Torpedo Bulkhead and Bulges:
1.97" / 50 mm 436.35 ft / 133.00 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 (350-280mm)
3rd: 5.31" / 135 mm 2.76" / 70 mm 2.76" / 70 mm
4th: 0.39" / 10 mm 0.39" / 10 mm -

- Armour deck: 5.75" / 146 mm, Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 160,000 shp / 119,360 Kw = 31.14 kts
Range 4,000nm at 25.00 kts
Bunker at max displacement = 7,070 tons

Complement:
1,571 - 2,043

Cost:
£18.623 million / $74.493 million

Distribution of weights at normal displacement:
Armament: 2,081 tons, 4.5 %
Armour: 15,500 tons, 33.7 %
- Belts: 4,814 tons, 10.5 %
- Torpedo bulkhead: 959 tons, 2.1 %
- Armament: 3,170 tons, 6.9 %
- Armour Deck: 6,480 tons, 14.1 %
- Conning Tower: 76 tons, 0.2 %
Machinery: 4,603 tons, 10.0 %
Hull, fittings & equipment: 17,342 tons, 37.7 %
Fuel, ammunition & stores: 6,027 tons, 13.1 %
Miscellaneous weights: 500 tons, 1.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
65,608 lbs / 29,760 Kg = 38.9 x 15.0 " / 381 mm shells or 9.8 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 7.1 ft / 2.2 m
Roll period: 17.1 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.53
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.565
Length to Beam Ratio: 7.27 : 1
'Natural speed' for length: 32.62 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 49
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: 34.45 ft / 10.50 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: 22.82 ft / 6.96 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 84.8 %
- Above water (accommodation/working, high = better): 160.3 %
Waterplane Area: 60,934 Square feet or 5,661 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 205 lbs/sq ft or 999 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.33
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Deck
70mm forwards, 36+135 machinery, 36+155 magazines, 100mm box aft

Belt
70+280@15 + 36 + 24
60 splinter proofing forwards

10t RaS.3 Surface Warning Radar
10t RaA.1 Air Warning Radar
40t GDR1 FCS Systems x4
100t CIC
100t Extra diesel emergency generators

1937
Tripolitania Laid down 1937
Cirenaica Laid down 1937

Lengthened Littorio Class to accommodate four triple turrets.



Displacement:
44,885 t light; 47,675 t standard; 51,780 t normal; 55,065 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(847.61 ft / 820.21 ft) x 108.27 ft (Bulges 111.55 ft) x (34.45 / 36.19 ft)
(258.35 m / 250.00 m) x 33.00 m (Bulges 34.00 m) x (10.50 / 11.03 m)

Armament:
12 - 15.00" / 381 mm 50.0 cal guns - 1,951.09lbs / 885.00kg shells, 110 per gun
Breech loading guns in turret on barbette mounts, 1937 Model
4 x 3-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
12 - 5.98" / 152 mm 53.0 cal guns - 99.21lbs / 45.00kg shells, 300 per gun
Dual purpose guns in turret on barbette mounts, 1937 Model
6 x 2-gun mounts on sides, evenly spread
56 - 1.46" / 37.0 mm 54.0 cal guns - 1.66lbs / 0.75kg shells, 2,000 per gun
Anti-air guns in deck mounts, 1937 Model
14 x Quad mounts on sides, evenly spread
14 raised mounts
18 - 0.98" / 25.0 mm 77.0 cal guns - 0.54lbs / 0.24kg shells, 4,000 per gun
Anti-air guns in deck mounts, 1937 Model
18 x Single mounts on side ends, majority aft
Weight of broadside 24,706 lbs / 11,207 kg

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:
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 -

- Armoured deck - multiple decks: 6.26" / 159 mm For and Aft decks

- Conning towers: Forward 2.76" / 70 mm, Aft 0.00" / 0 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:
£24.953 million / $99.814 million

Distribution of weights at normal displacement:
Armament: 5,354 tons, 10.3 %
Armour: 16,637 tons, 32.1 %
- Belts: 5,086 tons, 9.8 %
- Torpedo bulkhead: 1,024 tons, 2.0 %
- Armament: 4,171 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: 18,140 tons, 35.0 %
Fuel, ammunition & stores: 6,895 tons, 13.3 %
Miscellaneous weights: 320 tons, 0.6 %
- Hull below water: 100 tons
- Hull above water: 100 tons
- Above deck: 120 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
69,222 lbs / 31,399 Kg = 41.0 x 15.0 " / 381 mm shells or 10.1 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 6.9 ft / 2.1 m
Roll period: 17.8 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.69
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has a flush deck,
a normal bow and large transom stern
Block coefficient (normal/deep): 0.575 / 0.582
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): 49
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 36.09 ft / 11.00 m, 22.97 ft / 7.00 m
- Forward deck: 30.00 %, 22.97 ft / 7.00 m, 21.33 ft / 6.50 m
- Aft deck: 35.00 %, 21.33 ft / 6.50 m, 21.33 ft / 6.50 m
- Quarter deck: 15.00 %, 21.33 ft / 6.50 m, 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): 86.8 %
- Above water (accommodation/working, high = better): 159.2 %
Waterplane Area: 66,089 Square feet or 6,140 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 226 lbs/sq ft or 1,105 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.25
- Overall: 1.00
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

Information on ships that have not be payed of from the Marina Militare has been relocated.