Well as far as i can make out with my limited resources this is what the Italian fleet comprises of.
Battleships and cruisers are historic but the destroyers and smaller vessels are made up due to a lack of data.
Part 1 Battleships
1.1 Existing battleships
4 Predreadnoughts
1 Dante Aligheiri class
2 Conte de Cavour class
2 Caio Duilio class
Dante Alighieri, Italian Battleship laid down 1909
Displacement:
20,278 t light; 21,694 t standard; 22,636 t normal; 23,299 t full load
Loading submergence 904 tons/feet
Dimensions:
541.00 ft x 87.30 ft x 30.50 ft (normal load)
164.90 m x 26.61 m x 9.30 m
Armament:
12 - 12.00" / 305 mm guns (4 Main turrets x 3 guns)
20 - 4.70" / 119 mm guns
12 - 3.00" / 76 mm QF guns
Weight of broadside 11,568 lbs / 5,247 kg
Armour:
Belt 9.80" / 249 mm, upper belt 6.70" / 170 mm, end belts 4.00" / 102 mm
Belts cover 103 % of normal area
Main turrets 9.80" / 249 mm, 2nd turrets 4.00" / 102 mm
Armour deck 3.60" / 91 mm, Conning tower 11.00" / 279 mm
Torpedo bulkhead 2.00" / 51 mm
Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 2 shafts, 41,992 shp / 31,326 Kw = 23.00 kts
Range 5,000nm at 10.00 kts
Complement:
922 - 1,199
Cost:
£2.210 million / $8.839 million
Distribution of weights at normal displacement:
Armament: 1,446 tons, 6.4 %
Armour: 8,676 tons, 38.3 %
Belts: 2,895 tons, 12.8 %, Armament: 2,690 tons, 11.9 %, Armour Deck: 2,107 tons, 9.3 %
Conning Tower: 190 tons, 0.8 %, Torpedo bulkhead: 794 tons, 3.5 %
Machinery: 2,038 tons, 9.0 %
Hull, fittings & equipment: 8,117 tons, 35.9 %
Fuel, ammunition & stores: 2,359 tons, 10.4 %
Miscellaneous weights: 0 tons, 0.0 %
Metacentric height 4.5
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: 18,975 lbs / 8,607 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: 55 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.69
Relative quality as seaboat: 1.17
Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.41
Hull speed coefficient 'M': 5.85
'Natural speed' for length: 23.26 kts
Power going to wave formation at top speed: 50 %
Trim: 47
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 102.3 %
Relative accommodation and working space: 117.7 %
(Average = 100%)
Displacement factor: 93 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.94
(Structure weight / hull surface area: 173 lbs / square foot or 844 Kg / square metre)
Relative longitudinal hull strength: 1.73
(for 18.00 ft / 5.49 m average freeboard, freeboard adjustment 0.17 ft)
Relative composite hull strength: 1.00
Conte De Cavour, Italian Battleship laid down 1911
Displacement:
20,217 t light; 21,737 t standard; 24,565 t normal; 26,729 t full load
Loading submergence 1,025 tons/feet
Dimensions:
554.50 ft x 91.90 ft x 28.50 ft (normal load)
169.01 m x 28.01 m x 8.69 m
Armament:
13 - 12.00" / 305 mm guns (5 Main turrets, 2 superfiring turrets)
18 - 4.70" / 119 mm guns
13 - 3.00" / 76 mm QF guns
Weight of broadside 12,342 lbs / 5,598 kg
Armour:
Belt 9.80" / 249 mm, upper belt 5.10" / 130 mm, end belts 3.00" / 76 mm
Belts cover 89 % of normal area
Main turrets 11.00" / 279 mm, 2nd gun shields 4.00" / 102 mm
Armour deck 2.50" / 64 mm, Conning tower 11.00" / 279 mm
Torpedo bulkhead 2.00" / 51 mm
Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 2 shafts, 34,469 shp / 25,714 Kw = 21.50 kts
Range 3,100nm at 20.00 kts
Complement:
981 - 1,275
Cost:
£2.211 million / $8.843 million
Distribution of weights at normal displacement:
Armament: 1,543 tons, 6.3 %
Armour: 8,251 tons, 33.6 %
Belts: 2,368 tons, 9.6 %, Armament: 3,263 tons, 13.3 %, Armour Deck: 1,659 tons, 6.8 %
Conning Tower: 201 tons, 0.8 %, Torpedo bulkhead: 760 tons, 3.1 %
Machinery: 1,480 tons, 6.0 %
Hull, fittings & equipment: 8,944 tons, 36.4 %
Fuel, ammunition & stores: 4,348 tons, 17.7 %
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: 23,960 lbs / 10,868 Kg = 27.7 x 12.0 " / 305 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 4.0
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 55 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.54
Relative quality as seaboat: 1.14
Hull form characteristics:
Block coefficient: 0.592
Sharpness coefficient: 0.43
Hull speed coefficient 'M': 5.84
'Natural speed' for length: 23.55 kts
Power going to wave formation at top speed: 47 %
Trim: 48
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 87.6 %
Relative accommodation and working space: 111.4 %
(Average = 100%)
Displacement factor: 104 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.97
(Structure weight / hull surface area: 181 lbs / square foot or 884 Kg / square metre)
Relative longitudinal hull strength: 1.38
(for 16.00 ft / 4.88 m average freeboard, freeboard adjustment -2.12 ft)
Relative composite hull strength: 1.00
Caio Duilio, Italian Battleship laid down 1912
Displacement:
20,585 t light; 22,141 t standard; 23,036 t normal; 23,660 t full load
Loading submergence 988 tons/feet
Dimensions:
554.50 ft x 91.10 ft x 28.10 ft (normal load)
169.01 m x 27.77 m x 8.56 m
Armament:
13 - 12.00" / 305 mm guns (5 Main turrets, 2 superfiring turrets)
16 - 6.00" / 152 mm guns
13 - 3.00" / 76 mm QF guns
Weight of broadside 13,136 lbs / 5,958 kg
Armour:
Belt 9.80" / 249 mm, upper belt 5.10" / 130 mm, end belts 3.00" / 76 mm
Belts cover 98 % of normal area
Main turrets 11.00" / 279 mm, 2nd gun shields 4.00" / 102 mm
Armour deck 2.60" / 66 mm, Conning tower 11.00" / 279 mm
Torpedo bulkhead 2.00" / 51 mm
Machinery:
Coal fired boilers, steam turbines,
Geared drive, 2 shafts, 32,835 shp / 24,495 Kw = 21.50 kts
Range 4,800nm at 10.00 kts
Complement:
934 - 1,215
Cost:
£2.301 million / $9.205 million
Distribution of weights at normal displacement:
Armament: 1,642 tons, 7.1 %
Armour: 8,488 tons, 36.8 %
Belts: 2,596 tons, 11.3 %, Armament: 3,287 tons, 14.3 %, Armour Deck: 1,663 tons, 7.2 %
Conning Tower: 192 tons, 0.8 %, Torpedo bulkhead: 749 tons, 3.3 %
Machinery: 1,440 tons, 6.3 %
Hull, fittings & equipment: 9,015 tons, 39.1 %
Fuel, ammunition & stores: 2,451 tons, 10.6 %
Miscellaneous weights: 0 tons, 0.0 %
Metacentric height 4.8
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: 20,463 lbs / 9,282 Kg = 23.7 x 12.0 " / 305 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 3.4
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 47 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.58
Relative quality as seaboat: 1.07
Hull form characteristics:
Block coefficient: 0.568
Sharpness coefficient: 0.42
Hull speed coefficient 'M': 5.96
'Natural speed' for length: 23.55 kts
Power going to wave formation at top speed: 46 %
Trim: 42
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 96.9 %
Relative accommodation and working space: 112.8 %
(Average = 100%)
Displacement factor: 94 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.96
(Structure weight / hull surface area: 188 lbs / square foot or 917 Kg / square metre)
Relative longitudinal hull strength: 1.36
(for 16.00 ft / 4.88 m average freeboard, freeboard adjustment -1.89 ft)
Relative composite hull strength: 1.00
1.2 Battleships building
2 Francesco Caracciolo class Building (2 launched)
Francesco Caracciolo, laid down 1916
Displacement:
30,621 t light; 32,507 t standard; 34,755 t normal; 36,415 t full load
Loading submergence 1,344 tons/feet
Dimensions:
715.00 ft x 98.20 ft x 31.50 ft (normal load)
217.93 m x 29.93 m x 9.60 m
Armament:
8 - 15.00" / 381 mm guns (4 Main turrets x 2 guns, 2 superfiring turrets)
Aft turrets separated by engine room
12 - 4.70" / 119 mm guns
12 - 3.00" / 76 mm AA guns
32 - 0.52" / 13 mm guns
Weight of broadside 14,287 lbs / 6,481 kg
Armour:
Belt 11.80" / 300 mm, ends unarmoured
Belts cover 98 % of normal area
Main turrets 15.60" / 396 mm, 2nd gun shields 2.00" / 51 mm
Armour deck 3.00" / 76 mm, Conning tower 3.00" / 76 mm
Torpedo bulkhead 1.80" / 46 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 105,762 shp / 78,898 Kw = 28.00 kts
Range 7,500nm at 14.00 kts
Complement:
1,272 - 1,654
Cost:
£5.111 million / $20.445 million
Distribution of weights at normal displacement:
Armament: 1,786 tons, 5.1 %
Armour: 10,854 tons, 31.2 %
Belts: 2,714 tons, 7.8 %, Armament: 4,485 tons, 12.9 %, Armour Deck: 2,611 tons, 7.5 %
Conning Tower: 69 tons, 0.2 %, Torpedo bulkhead: 975 tons, 2.8 %
Machinery: 3,940 tons, 11.3 %
Hull, fittings & equipment: 14,041 tons, 40.4 %
Fuel, ammunition & stores: 4,135 tons, 11.9 %
Miscellaneous weights: 0 tons, 0.0 %
Metacentric height 5.4
Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 34,863 lbs / 15,813 Kg = 20.7 x 15.0 " / 381 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 4.7
(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: 0.64
Relative quality as seaboat: 1.18
Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.39
Hull speed coefficient 'M': 6.70
'Natural speed' for length: 26.74 kts
Power going to wave formation at top speed: 51 %
Trim: 43
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 96.6 %
Relative accommodation and working space: 162.0 %
(Average = 100%)
Displacement factor: 105 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.96
(Structure weight / hull surface area: 201 lbs / square foot or 979 Kg / square metre)
Relative longitudinal hull strength: 1.42
(for 23.00 ft / 7.01 m average freeboard, freeboard adjustment 3.57 ft)
Relative composite hull strength: 1.00
1.3 Proposed Battleships
2 Sicilia Class Treaty Battleships
Sicilia, Italian Battleship laid down 1922
Displacement:
37,675 t light; 39,906 t standard; 42,471 t normal; 44,353 t full load
Loading submergence 1,642 tons/feet
Dimensions:
780.00 ft x 110.00 ft x 31.50 ft (normal load)
237.74 m x 33.53 m x 9.60 m
Armament:
9 - 15.00" / 381 mm guns (3 Main turrets x 3 guns, 1 superfiring turret)
Main turrets are grouped together
16 - 5.51" / 140 mm guns
24 - 1.59" / 41 mm AA guns
Weight of broadside 16,576 lbs / 7,519 kg
Armour:
Belt 16.00" / 406 mm, upper belt 4.00" / 102 mm, ends unarmoured
Belts cover 79 % of normal area
Main belt does not fully protect magazines and engineering spaces
Main turrets 15.00" / 381 mm, 2nd turrets 2.00" / 51 mm
Armour deck 7.20" / 183 mm, Conning tower 3.00" / 76 mm
Torpedo bulkhead 2.00" / 51 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 101,647 shp / 75,828 Kw = 27.00 kts
Range 6,500nm at 16.00 kts
Complement:
1,479 - 1,923
Cost:
£9.659 million / $38.638 million
Distribution of weights at normal displacement:
Armament: 2,072 tons, 4.9 %
Armour: 16,510 tons, 38.9 %
Belts: 3,984 tons, 9.4 %, Armament: 3,609 tons, 8.5 %, Armour Deck: 7,657 tons, 18.0 %
Conning Tower: 79 tons, 0.2 %, Torpedo bulkhead: 1,182 tons, 2.8 %
Machinery: 3,448 tons, 8.1 %
Hull, fittings & equipment: 15,525 tons, 36.6 %
Fuel, ammunition & stores: 4,796 tons, 11.3 %
Miscellaneous weights: 120 tons, 0.3 %
Metacentric height 6.3
Remarks:
Hull space for machinery, storage & compartmentation is excellent
Room for accommodation & workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 46,294 lbs / 20,999 Kg = 27.4 x 15.0 " / 381 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 7.4
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 76 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.47
Relative quality as seaboat: 1.13
Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.39
Hull speed coefficient 'M': 6.84
'Natural speed' for length: 27.93 kts
Power going to wave formation at top speed: 47 %
Trim: 67
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 79.5 %
Relative accommodation and working space: 133.3 %
(Average = 100%)
Displacement factor: 106 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.99
(Structure weight / hull surface area: 199 lbs / square foot or 973 Kg / square metre)
Relative longitudinal hull strength: 1.06
(for 18.00 ft / 5.49 m average freeboard, freeboard adjustment -2.22 ft)
Relative composite hull strength: 1.00
2 Aircraft carriers
1.1 Existing Aircraft Carriers
There are no aircraft carriers currently serving with the Italian fleet.
1.2 Aircraft carriers building
1 Francesco Caracciolo class vessel is being converted
Francesco Morosini, Italian Aircraft Carrier laid down 1917
Displacement:
26,275 t light; 26,971 t standard; 28,908 t normal; 30,341 t full load
Loading submergence 1,344 tons/feet
Dimensions:
715.00 ft x 98.20 ft x 26.20 ft (normal load)
217.93 m x 29.93 m x 7.99 m
Armament: Airgroup of 36: 3 squadrons of 12
24 - 4.70" / 119 mm guns
12 - 3.00" / 76 mm AA guns
32 - 0.52" / 13 mm guns
Weight of broadside 1,410 lbs / 640 kg
Armour:
Belt 6.00" / 152 mm, ends unarmoured
Belts cover 90 % of normal area
Main gun shields 2.00" / 51 mm
Armour deck 6.00" / 152 mm, Conning tower 3.00" / 76 mm
Torpedo bulkhead 2.00" / 51 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 95,193 shp / 71,014 Kw = 28.00 kts
Range 7,500nm at 14.00 kts
Complement:
1,108 - 1,441
Cost:
£2.830 million / $11.318 million
Distribution of weights at normal displacement:
Armament: 176 tons, 0.6 %
Armour: 7,540 tons, 26.1 %
Belts: 1,268 tons, 4.4 %, Armament: 89 tons, 0.3 %, Armour Deck: 5,221 tons, 18.1 %
Conning Tower: 61 tons, 0.2 %, Torpedo bulkhead: 901 tons, 3.1 %
Machinery: 3,489 tons, 12.1 %
Hull, fittings & equipment: 8,069 tons, 27.9 %
Fuel, ammunition & stores: 2,632 tons, 9.1 %
Miscellaneous weights: 7,000 tons, 24.2 %
Metacentric height 5.4
Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 32,706 lbs / 14,835 Kg = 630.0 x 4.7 " / 119 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 5.0
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 90 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.04
Relative quality as seaboat: 1.34
Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.39
Hull speed coefficient 'M': 7.13
'Natural speed' for length: 26.74 kts
Power going to wave formation at top speed: 50 %
Trim: 67
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 89.2 %
Relative accommodation and working space: 169.8 %
(Average = 100%)
Displacement factor: 126 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.99
(Structure weight / hull surface area: 123 lbs / square foot or 598 Kg / square metre)
Relative longitudinal hull strength: 1.02
(for 21.00 ft / 6.40 m average freeboard, freeboard adjustment 2.28 ft)
Relative composite hull strength: 1.00
3 Cruisers
3.1 Armoured Cruisers
2 San Marco Class will be scrapped in 1921
San Marco, Italian Cruiser laid down 1905
Displacement:
10,509 t light; 11,080 t standard; 12,110 t normal; 12,886 t full load
Loading submergence 597 tons/feet
Dimensions:
426.50 ft x 68.90 ft x 24.00 ft (normal load)
130.00 m x 21.00 m x 7.32 m
Armament:
4 - 10.00" / 254 mm guns (2 Main turrets x 2 guns)
8 - 7.48" / 190 mm guns (4 2nd turrets x 2 guns)
20 - 3.00" / 76 mm QF guns
2 - 1.85" / 47 mm guns
Weight of broadside 3,950 lbs / 1,792 kg
3 - 17.7" / 449.58 mm submerged torpedo tubes
Armour:
Belt 7.90" / 201 mm, end belts 3.16" / 80 mm
Belts cover 111 % of normal area
Main turrets 7.00" / 178 mm, 2nd turrets 6.69" / 170 mm
Armour deck 1.97" / 50 mm, Conning tower 9.84" / 250 mm
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 2 shafts, 33,142 shp / 24,724 Kw = 23.20 kts
Range 4,700nm at 11.00 kts
Complement:
577 - 750
Cost:
£1.169 million / $4.677 million
Distribution of weights at normal displacement:
Armament: 494 tons, 4.1 %
Armour: 3,225 tons, 26.6 %
Belts: 1,245 tons, 10.3 %, Armament: 1,107 tons, 9.1 %, Armour Deck: 761 tons, 6.3 %
Conning Tower: 112 tons, 0.9 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,762 tons, 22.8 %
Hull, fittings & equipment: 4,028 tons, 33.3 %
Fuel, ammunition & stores: 1,601 tons, 13.2 %
Miscellaneous weights: 0 tons, 0.0 %
Metacentric height 3.2
Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 9,723 lbs / 4,410 Kg = 19.4 x 10.0 " / 254 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1.4
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 64 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.63
Relative quality as seaboat: 1.05
Hull form characteristics:
Block coefficient: 0.601
Sharpness coefficient: 0.43
Hull speed coefficient 'M': 5.68
'Natural speed' for length: 20.65 kts
Power going to wave formation at top speed: 58 %
Trim: 61
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 109.5 %
Relative accommodation and working space: 124.1 %
(Average = 100%)
Displacement factor: 95 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.92
(Structure weight / hull surface area: 127 lbs / square foot or 618 Kg / square metre)
Relative longitudinal hull strength: 2.05
(for 18.00 ft / 5.49 m average freeboard, freeboard adjustment 2.27 ft)
Relative composite hull strength: 1.00
3.2 Captured/War reparations Cruisers
3 Light cruisers.
Bari, Italian Cruiser laid down 1913
Displacement:
4,223 t light; 4,390 t standard; 4,728 t normal; 4,979 t full load
Loading submergence 317 tons/feet
Dimensions:
439.00 ft x 44.60 ft x 19.70 ft (normal load)
133.81 m x 13.59 m x 6.00 m
Armament:
8 - 5.90" / 150 mm guns
2 - 3.46" / 88 mm guns
6 - 0.30" / 8 mm guns
Weight of broadside 863 lbs / 392 kg
2 - 19.7" / 500.38 mm above water torpedoes
Armour:
Armour deck 3.00" / 76 mm, Conning tower 3.00" / 76 mm
Machinery:
Coal and oil fired boilers, steam turbines,
Geared drive, 2 shafts, 31,764 shp / 23,696 Kw = 27.50 kts
Range 4,300nm at 12.00 kts
Complement:
285 - 370
Cost:
£0.454 million / $1.815 million
Distribution of weights at normal displacement:
Armament: 108 tons, 2.3 %
Armour: 635 tons, 13.4 %
Belts: 0 tons, 0.0 %, Armament: 0 tons, 0.0 %, Armour Deck: 616 tons, 13.0 %
Conning Tower: 18 tons, 0.4 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 1,268 tons, 26.8 %
Hull, fittings & equipment: 1,973 tons, 41.7 %
Fuel, ammunition & stores: 505 tons, 10.7 %
Miscellaneous weights: 240 tons, 5.1 %
Metacentric height 1.8
Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is adequate
Good seaboat, rides out heavy weather easily
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.12
Shellfire needed to sink: 4,268 lbs / 1,936 Kg = 41.6 x 5.9 " / 150 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.9
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 68 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.30
Relative quality as seaboat: 1.37
Hull form characteristics:
Block coefficient: 0.429
Sharpness coefficient: 0.31
Hull speed coefficient 'M': 8.00
'Natural speed' for length: 20.95 kts
Power going to wave formation at top speed: 53 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 110.3 %
Relative accommodation and working space: 111.4 %
(Average = 100%)
Displacement factor: 111 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.10
(Structure weight / hull surface area: 92 lbs / square foot or 447 Kg / square metre)
Relative longitudinal hull strength: 2.23
(for 16.00 ft / 4.88 m average freeboard, freeboard adjustment 2.96 ft)
Relative composite hull strength: 1.18
Acona, Italian Cruiser laid down 1912
Displacement:
4,739 t light; 4,910 t standard; 5,359 t normal; 5,697 t full load
Loading submergence 348 tons/feet
Dimensions:
457.00 ft x 45.30 ft x 20.00 ft (normal load)
139.29 m x 13.81 m x 6.10 m
Armament:
7 - 5.90" / 150 mm guns
2 - 3.46" / 88 mm guns
6 - 0.30" / 8 mm guns
Weight of broadside 760 lbs / 345 kg
2 - 19.7" / 500.38 mm above water torpedoes, 2 - 19.7" / 500.38 mm submerged torpedo tubes
Armour:
Belt 2.40" / 61 mm, upper belt 2.40" / 61 mm, end belts 2.40" / 61 mm
Belts cover 100 % of normal area
Main gun shields 3.00" / 76 mm, 2nd gun shields 2.00" / 51 mm
Armour deck 2.40" / 61 mm, Conning tower 3.90" / 99 mm
Machinery:
Coal and oil fired boilers, steam turbines,
Geared drive, 2 shafts, 36,555 shp / 27,270 Kw = 28.00 kts
Range 4,500nm at 12.00 kts
Complement:
313 - 407
Cost:
£0.462 million / $1.846 million
Distribution of weights at normal displacement:
Armament: 95 tons, 1.8 %
Armour: 1,198 tons, 22.4 %
Belts: 584 tons, 10.9 %, Armament: 48 tons, 0.9 %, Armour Deck: 541 tons, 10.1 %
Conning Tower: 26 tons, 0.5 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 1,542 tons, 28.8 %
Hull, fittings & equipment: 1,784 tons, 33.3 %
Fuel, ammunition & stores: 620 tons, 11.6 %
Miscellaneous weights: 120 tons, 2.2 %
Metacentric height 1.7
Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 4,240 lbs / 1,923 Kg = 41.3 x 5.9 " / 150 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.9
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 75 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.26
Relative quality as seaboat: 1.16
Hull form characteristics:
Block coefficient: 0.453
Sharpness coefficient: 0.31
Hull speed coefficient 'M': 7.98
'Natural speed' for length: 21.38 kts
Power going to wave formation at top speed: 54 %
Trim: 64
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 114.0 %
Relative accommodation and working space: 108.8 %
(Average = 100%)
Displacement factor: 104 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.95
(Structure weight / hull surface area: 78 lbs / square foot or 380 Kg / square metre)
Relative longitudinal hull strength: 1.53
(for 15.60 ft / 4.75 m average freeboard, freeboard adjustment 2.23 ft)
Relative composite hull strength: 1.00
Strassburg, Italian Cruiser laid down 1910
Displacement:
4,405 t light; 4,573 t standard; 5,213 t normal; 5,704 t full load
Loading submergence 339 tons/feet
Dimensions:
445.00 ft x 44.00 ft x 19.70 ft (normal load)
135.64 m x 13.41 m x 6.00 m
Armament:
7 - 5.90" / 150 mm guns
2 - 3.46" / 88 mm guns
6 - 0.30" / 8 mm guns
Weight of broadside 760 lbs / 345 kg
2 - 19.7" / 500.38 mm above water torpedoes
Armour:
Belt 2.40" / 61 mm, upper belt 1.40" / 36 mm, end belts 2.40" / 61 mm
Belts cover 105 % of normal area
Main gun shields 2.00" / 51 mm, 2nd gun shields 1.00" / 25 mm
Armour deck 2.40" / 61 mm, Conning tower 3.90" / 99 mm
Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 2 shafts, 31,655 shp / 23,615 Kw = 27.00 kts
Range 5,820nm at 12.00 kts
Complement:
306 - 398
Cost:
£0.430 million / $1.718 million
Distribution of weights at normal displacement:
Armament: 95 tons, 1.8 %
Armour: 1,075 tons, 20.6 %
Belts: 492 tons, 9.4 %, Armament: 31 tons, 0.6 %, Armour Deck: 526 tons, 10.1 %
Conning Tower: 25 tons, 0.5 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 1,397 tons, 26.8 %
Hull, fittings & equipment: 1,718 tons, 32.9 %
Fuel, ammunition & stores: 808 tons, 15.5 %
Miscellaneous weights: 120 tons, 2.3 %
Metacentric height 1.6
Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 5,065 lbs / 2,298 Kg = 49.3 x 5.9 " / 150 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1.0
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 85 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.33
Relative quality as seaboat: 1.31
Hull form characteristics:
Block coefficient: 0.473
Sharpness coefficient: 0.32
Hull speed coefficient 'M': 7.85
'Natural speed' for length: 21.10 kts
Power going to wave formation at top speed: 53 %
Trim: 65
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 103.8 %
Relative accommodation and working space: 110.8 %
(Average = 100%)
Displacement factor: 110 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.95
(Structure weight / hull surface area: 77 lbs / square foot or 374 Kg / square metre)
Relative longitudinal hull strength: 1.61
(for 16.00 ft / 4.88 m average freeboard, freeboard adjustment 2.71 ft)
Relative composite hull strength: 1.00
4 Destroyers
4.1 Existing destroyers
20 Napoli Class destroyers
Napoli Class, Italian Destroyer laid down 1918
Displacement:
1,431 t light; 1,477 t standard; 1,539 t normal; 1,582 t full load
Loading submergence 200 tons/feet
Dimensions:
342.00 ft x 35.00 ft x 10.00 ft (normal load)
104.24 m x 10.67 m x 3.05 m
Armament:
6 - 4.00" / 102 mm guns
6 - 0.30" / 8 mm AA guns
Weight of broadside 192 lbs / 87 kg
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 43,594 shp / 32,521 Kw = 34.00 kts
Range 3,000nm at 10.00 kts
Complement:
122 - 159
Cost:
£0.397 million / $1.586 million
Distribution of weights at normal displacement:
Armament: 24 tons, 1.6 %
Machinery: 915 tons, 59.4 %
Hull, fittings & equipment: 462 tons, 30.0 %
Fuel, ammunition & stores: 108 tons, 7.0 %
Miscellaneous weights: 30 tons, 1.9 %
Metacentric height 1.4
Remarks:
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage & compartmentation is extremely poor
Room for accommodation & workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.20
Shellfire needed to sink: 342 lbs / 155 Kg = 10.7 x 4.0 " / 102 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.2
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 76 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.21
Relative quality as seaboat: 1.03
Hull form characteristics:
Block coefficient: 0.450
Sharpness coefficient: 0.32
Hull speed coefficient 'M': 9.05
'Natural speed' for length: 18.49 kts
Power going to wave formation at top speed: 70 %
Trim: 74
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 205.6 %
Relative accommodation and working space: 180.6 %
(Average = 100%)
Displacement factor: 46 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.49
(Structure weight / hull surface area: 35 lbs / square foot or 171 Kg / square metre)
Relative longitudinal hull strength: 1.44
(for 16.50 ft / 5.03 m average freeboard, freeboard adjustment 6.09 ft)
Relative composite hull strength: 0.55
4.2 Building Destroyers
5 Trieste Class All completed
Trieste Class, Italian Destroyer laid down 1920
Displacement:
1,515 t light; 1,561 t standard; 1,683 t normal; 1,774 t full load
Loading submergence 228 tons/feet
Dimensions:
398.00 ft x 37.00 ft x 10.00 ft (normal load)
121.31 m x 11.28 m x 3.05 m
Armament:
4 - 4.00" / 102 mm guns
6 - 1.57" / 40 mm AA guns
Weight of broadside 140 lbs / 63 kg
6 - 21.0" / 533.4 mm above water torpedoes
Armour:
Main gun shields 1.00" / 25 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 40,215 shp / 30,000 Kw = 34.00 kts
Range 4,000nm at 12.00 kts
Complement:
131 - 170
Cost:
£0.480 million / $1.921 million
Distribution of weights at normal displacement:
Armament: 17 tons, 1.0 %
Armour: 5 tons, 0.3 %
Belts: 0 tons, 0.0 %, Armament: 5 tons, 0.3 %, Armour Deck: 0 tons, 0.0 %
Conning Tower: 0 tons, 0.0 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 967 tons, 57.5 %
Hull, fittings & equipment: 525 tons, 31.2 %
Fuel, ammunition & stores: 168 tons, 10.0 %
Miscellaneous weights: 0 tons, 0.0 %
Metacentric height 1.8
Remarks:
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.30
Shellfire needed to sink: 448 lbs / 203 Kg = 14.0 x 4.0 " / 102 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.3
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 84 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.11
Relative quality as seaboat: 1.15
Hull form characteristics:
Block coefficient: 0.400
Sharpness coefficient: 0.29
Hull speed coefficient 'M': 10.23
'Natural speed' for length: 19.95 kts
Power going to wave formation at top speed: 63 %
Trim: 73
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 193.4 %
Relative accommodation and working space: 129.2 %
(Average = 100%)
Displacement factor: 57 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.53
(Structure weight / hull surface area: 36 lbs / square foot or 174 Kg / square metre)
Relative longitudinal hull strength: 1.04
(for 15.50 ft / 4.72 m average freeboard, freeboard adjustment 4.90 ft)
Relative composite hull strength: 0.56
5 Smaller vessels.
5.1 Frigates
15 Guardino class vessels
Guardino, Italian Frigate laid down 1917
Displacement:
1,020 t light; 1,051 t standard; 1,192 t normal; 1,301 t full load
Loading submergence 157 tons/feet
Dimensions:
280.00 ft x 27.60 ft x 9.00 ft (normal load)
85.34 m x 8.41 m x 2.74 m
Armament:
6 - 3.00" / 76 mm guns
2 - 1.59" / 41 mm AA guns
Weight of broadside 85 lbs / 39 kg
Armour:
Main gun shields 1.00" / 25 mm
Conning tower 1.00" / 25 mm
Machinery:
Diesel Internal combustion motors,
Electric cruising motors plus geared drives, 1 shaft, 4,850 shp / 3,618 Kw = 20.00 kts
Range 3,000nm at 15.00 kts
Complement:
101 - 131
Cost:
£0.126 million / $0.506 million
Distribution of weights at normal displacement:
Armament: 11 tons, 0.9 %
Armour: 7 tons, 0.6 %
Belts: 0 tons, 0.0 %, Armament: 4 tons, 0.4 %, Armour Deck: 0 tons, 0.0 %
Conning Tower: 2 tons, 0.2 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 178 tons, 14.9 %
Hull, fittings & equipment: 724 tons, 60.8 %
Fuel, ammunition & stores: 173 tons, 14.5 %
Miscellaneous weights: 100 tons, 8.4 %
Metacentric height 0.8
Remarks:
Hull space for machinery, storage & compartmentation is excellent
Room for accommodation & workspaces is adequate
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 2,043 lbs / 927 Kg = 151.4 x 3.0 " / 76 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1.0
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 61 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.11
Relative quality as seaboat: 1.03
Hull form characteristics:
Block coefficient: 0.600
Sharpness coefficient: 0.36
Hull speed coefficient 'M': 8.07
'Natural speed' for length: 16.73 kts
Power going to wave formation at top speed: 52 %
Trim: 59
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 65.3 %
Relative accommodation and working space: 93.2 %
(Average = 100%)
Displacement factor: 218 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 2.01
(Structure weight / hull surface area: 83 lbs / square foot or 407 Kg / square metre)
Relative longitudinal hull strength: 2.10
(for 9.00 ft / 2.74 m average freeboard, freeboard adjustment -0.90 ft)
Relative composite hull strength: 2.02
5.2 Patrol vessels
5 Calabria class patrol vessels
Calabria, Italian Patrol vessel laid down 1921
Displacement:
547 t light; 559 t standard; 588 t normal; 609 t full load
Loading submergence 116 tons/feet
Dimensions:
260.00 ft x 22.00 ft x 6.00 ft (normal load)
79.25 m x 6.71 m x 1.83 m
Armament:
4 - 1.59" / 41 mm guns
Weight of broadside 8 lbs / 4 kg
Machinery:
Diesel Internal combustion generators,
Electric motors, 1 shaft, 3,201 shp / 2,388 Kw = 20.00 kts
Range 1,000nm at 15.00 kts
Complement:
59 - 77
Cost:
£0.090 million / $0.361 million
Distribution of weights at normal displacement:
Armament: 1 tons, 0.2 %
Machinery: 110 tons, 18.7 %
Hull, fittings & equipment: 426 tons, 72.3 %
Fuel, ammunition & stores: 42 tons, 7.1 %
Miscellaneous weights: 10 tons, 1.7 %
Metacentric height 0.6
Remarks:
Hull space for machinery, storage & compartmentation is excellent
Room for accommodation & workspaces is adequate
Good seaboat, rides out heavy weather easily
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 1,277 lbs / 579 Kg = 629.9 x 1.6 " / 41 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.8
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 66 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.03
Relative quality as seaboat: 1.31
Hull form characteristics:
Block coefficient: 0.600
Sharpness coefficient: 0.34
Hull speed coefficient 'M': 9.48
'Natural speed' for length: 16.12 kts
Power going to wave formation at top speed: 50 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 65.0 %
Relative accommodation and working space: 116.7 %
(Average = 100%)
Displacement factor: 247 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 2.00
(Structure weight / hull surface area: 65 lbs / square foot or 315 Kg / square metre)
Relative longitudinal hull strength: 2.01
(for 8.90 ft / 2.71 m average freeboard, freeboard adjustment 0.31 ft)
Relative composite hull strength: 2.00
Monday, April 29th 2024, 8:50am
Go to the top of the page
