WesWorld

1905, San Marco Class

Ships in class; San Marco

Transferred to Turkey in 1926




San Marco, Italian Cruiser laid down 1905

Displacement:
10,162 t light; 10,718 t standard; 11,495 t normal; 12,071 t full load
Loading submergence 592 tons/feet

Dimensions:
462.27 ft x 68.90 ft x 24.02 ft (normal load)
140.90 m x 21.00 m x 7.32 m

Armament:
4 - 10"/45 guns in 2 twin turrets
8 - 190mm/45 guns in 4 turrets
17 - 3" guns in 17 single mounts and casemates
2 - 47mm AA guns in 2 single mounts
Weight of broadside 3,910 lbs / 1,773 kg
3 - 450 mm submerged torpedo tubes
Armour:
Belt 7.87" / 200 mm, end belts 2.36" / 60 mm
Belts cover 108 % of normal area
Main turrets 7.09" / 180 mm, 2nd turrets 6.30" / 160 mm
Armour deck 1.77" / 45 mm, Conning tower 9.84" / 250 mm

Machinery:
Coal fired boilers, steam turbines,
Direct drive, 4 shafts, 30,000 shp / 22,380 Kw = 23.25 kts
Range 3,000nm at 12.00 kts

Complement:
555 - 721

Cost:
£1.116 million / $4.465 million

Distribution of weights at normal displacement:
Armament: 489 tons, 4.3 %
Armour: 3,054 tons, 26.6 %
Belts: 1,242 tons, 10.8 %, Armament: 1,025 tons, 8.9 %, Armour Deck: 679 tons, 5.9 %
Conning Tower: 108 tons, 0.9 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,500 tons, 21.7 %
Hull, fittings & equipment: 4,094 tons, 35.6 %
Fuel, ammunition & stores: 1,333 tons, 11.6 %
Miscellaneous weights: 25 tons, 0.2 %

Metacentric height 3.2

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

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 9,432 lbs / 4,278 Kg = 18.9 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: 71 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.61
Relative quality as seaboat: 1.16

Hull form characteristics:
Block coefficient: 0.526
Sharpness coefficient: 0.39
Hull speed coefficient 'M': 6.26
'Natural speed' for length: 21.50 kts
Power going to wave formation at top speed: 53 %
Trim: 61
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 107.4 %
Relative accommodation and working space: 116.6 %
(Average = 100%)
Displacement factor: 96 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.94
(Structure weight / hull surface area: 128 lbs / square foot or 626 Kg / square metre)
Relative longitudinal hull strength: 1.75
(for 16.40 ft / 5.00 m average freeboard, freeboard adjustment 0.83 ft)
Relative composite hull strength: 1.00

1921, Regina Elena

Ships in class; Regina Elena

[size=3]Sold to Siam in 1932[/size]




Regina Elana , Italian Heavy Cruiser Rebuilt 1921

Displacement:
10,350 t light; 10,874 t standard; 12,522 t normal; 13,790 t full load
Loading submergence 613 tons/feet

Dimensions:
474.41 ft x 73.49 ft x 25.92 ft (normal load)
144.60 m x 22.40 m x 7.90 m

Armament:
12 - 8" / 50 M1921 guns in 6 duple turrets
16 - 3" / 60 guns in 10 casemate mounts and 6 free mounts
Weight of broadside 3,288 lbs / 1,491 kg


Armour:
Belt 9.84" / 250 mm, upper belt 3.15" / 80 mm, ends unarmoured
Belts cover 85 % of normal area
Main turrets 5.91" / 150 mm
Armour deck 1.97" / 50 mm, Conning tower 9.84" / 250 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 66,000 shp / 49,236 Kw = 28.04 kts
Range 4,750nm at 20.00 kts

Complement:
591 - 769

Cost:
£2.611 million / $10.443 million

Distribution of weights at normal displacement:
Armament: 411 tons, 3.3 %
Armour: 3,299 tons, 26.3 %
Belts: 1,436 tons, 11.5 %, Armament: 967 tons, 7.7 %, Armour Deck: 782 tons, 6.2 %
Conning Tower: 114 tons, 0.9 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,273 tons, 18.1 %
Hull, fittings & equipment: 4,317 tons, 34.5 %
Fuel, ammunition & stores: 2,172 tons, 17.3 %
Miscellaneous weights: 50 tons, 0.4 %

Metacentric height 4.0

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: 1.14
Shellfire needed to sink: 15,526 lbs / 7,042 Kg = 60.6 x 8.0 " / 203 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 2.2
(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: 0.40
Relative quality as seaboat: 1.01

Hull form characteristics:
Block coefficient: 0.485
Sharpness coefficient: 0.38
Hull speed coefficient 'M': 6.25
'Natural speed' for length: 21.78 kts
Power going to wave formation at top speed: 61 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 85.2 %
Relative accommodation and working space: 138.5 %
(Average = 100%)
Displacement factor: 112 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.91
(Structure weight / hull surface area: 124 lbs / square foot or 603 Kg / square metre)
Relative longitudinal hull strength: 2.31
(for 20.01 ft / 6.10 m average freeboard, freeboard adjustment 4.17 ft)
Relative composite hull strength: 1.00

Ships in class;

Zara Laid down 1927
Fiume Laid down 1927
Pola Laid down 1927





- Replacements for old armoured cruisers scrapped because of CT

- New 203mm/53 weapon in duple turrets firing a 125.3kg shell at 900m/s

- 100mm/47 gun with 13.8kg shells as powerful secondary armament

- Normal AA fit of 47mm and 20mm guns

- Poweful 600mm torpedo armament

- One catapult mounted forward with 2 aircraft

- Armoured against 152mm guns and partially against 203mm weapons

- Armour belt thins to 100mm thick at lower edge

- No deck armour forward. Single 90mm lamina over citadel on top of main belt armour. 50mm Lamina over steering gear. Average 70mm thickness

- Looks damn good

RM Zara, Italian Cruiser laid down 1927

Displacement:
11,249 t light; 11,752 t standard; 13,065 t normal; 14,115 t full load

Dimensions: Length overall / water x beam x draught
603.39 ft / 590.55 ft x 67.59 ft x 23.62 ft (normal load)
183.91 m / 180.00 m x 20.60 m x 7.20 m

Armament:
8 - 7.99" / 203 mm guns (4x2 guns), 276.24lbs / 125.30kg shells, 1927 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 3.94" / 100 mm guns (8x2 guns), 30.42lbs / 13.80kg shells, 1927 Model
Quick firing guns in deck mounts with hoists
on side ends, evenly spread
12 - 1.85" / 47.0 mm guns (4x3 guns), 3.86lbs / 1.75kg shells, 1927 Model
Anti-aircraft guns in deck mounts
on side, all aft
12 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1927 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 2,746 lbs / 1,245 kg
Shells per gun, main battery: 150
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.91" / 150 mm 366.96 ft / 111.85 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 96 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5.91" / 150 mm 3.94" / 100 mm 3.94" / 100 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm -
3rd: 0.39" / 10 mm - -

- Armour deck: 2.76" / 70 mm, Conning tower: 5.91" / 150 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 96,400 shp / 71,914 Kw = 31.65 kts
Range 4,235nm at 20.00 kts
Bunker at max displacement = 2,364 tons

Complement:
610 - 794

Cost:
£3.962 million / $15.850 million

Distribution of weights at normal displacement:
Armament: 321 tons, 2.5 %
Armour: 2,818 tons, 21.6 %
- Belts: 905 tons, 6.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 505 tons, 3.9 %
- Armour Deck: 1,338 tons, 10.2 %
- Conning Tower: 71 tons, 0.5 %
Machinery: 3,043 tons, 23.3 %
Hull, fittings & equipment: 5,016 tons, 38.4 %
Fuel, ammunition & stores: 1,816 tons, 13.9 %
Miscellaneous weights: 50 tons, 0.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
16,030 lbs / 7,271 Kg = 62.8 x 8.0 " / 203 mm shells or 1.9 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 3.7 ft / 1.1 m
Roll period: 14.8 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.48
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.485
Length to Beam Ratio: 8.74 : 1
'Natural speed' for length: 24.30 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 53
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.25 ft / 8.00 m
- Forecastle (19 %): 22.97 ft / 7.00 m
- Mid (65 %): 22.97 ft / 7.00 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (19 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 19.77 ft / 6.03 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 95.6 %
- Above water (accommodation/working, high = better): 145.4 %
Waterplane Area: 26,236 Square feet or 2,437 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 121 lbs/sq ft or 592 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.53
- Overall: 1.01
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

32.31knts light
33.07 knts achieved on trials with 10% overload
33.78knts with 20% overload

3 Ships laid down in 1931;
San Pietro, San Sylvestro, San Gregorio Magno

Original Design as laid down 1931

Displacement:
13,874 t light; 14,550 t standard; 16,585 t normal; 18,213 t full load

Dimensions: Length overall / water x beam x draught
637.63 ft / 623.36 ft x 65.62 ft (Bulges 75.69 ft) x 24.61 ft (normal load)
194.35 m / 190.00 m x 20.00 m (Bulges 23.07 m) x 7.50 m

Armament:
12 - 7.99" / 203 mm guns (4x3 guns), 291.01lbs / 132.00kg shells, 1931 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
14 - 3.94" / 100 mm guns (7x2 guns), 33.07lbs / 15.00kg shells, 1931 Model
Anti-aircraft guns in deck mounts with hoists
on side, all forward, 3 raised mounts - superfiring
16 - 1.46" / 37.0 mm guns (4x4 guns), 1.83lbs / 0.83kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, all forward, 2 raised mounts - superfiring
8 - 1.00" / 25.4 mm guns in single mounts, 0.52lbs / 0.24kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 3,989 lbs / 1,809 kg
Shells per gun, main battery: 150
16 - 23.6" / 600 mm above water torpedoes

Armour:
Currently secret
- Belts: Width (max) Length (avg) Height (avg)
Main: 7.29" / 185 mm 433.07 ft / 132.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Upper: 0.79" / 20 mm 65.62 ft / 20.00 m 8.20 ft / 2.50 m
Main Belt covers 107 % of normal length

- Torpedo Bulkhead and Bulges:
1.57" / 40 mm 305.12 ft / 93.00 m 32.81 ft / 10.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 7.48" / 190 mm 4.92" / 125 mm 5.91" / 150 mm
2nd: 0.79" / 20 mm 0.79" / 20 mm -
3rd: 0.39" / 10 mm 0.39" / 10 mm -

- Armour deck: 2.97" / 75 mm, Conning tower: 7.48" / 190 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 86,000 shp / 64,156 Kw = 30.87 kts
Range 6,540nm at 20.00 kts
Bunker at max displacement = 3,663 tons

Complement:
729 - 949

Cost:
£5.302 million / $21.210 million

Distribution of weights at normal displacement:
Armament: 440 tons, 2.7 %
Armour: 4,397 tons, 26.5 %
- Belts: 1,317 tons, 7.9 %
- Torpedo bulkhead: 583 tons, 3.5 %
- Armament: 836 tons, 5.0 %
- Armour Deck: 1,555 tons, 9.4 %
- Conning Tower: 105 tons, 0.6 %
Machinery: 2,572 tons, 15.5 %
Hull, fittings & equipment: 6,166 tons, 37.2 %
Fuel, ammunition & stores: 2,711 tons, 16.3 %
Miscellaneous weights: 300 tons, 1.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
24,591 lbs / 11,154 Kg = 96.3 x 8.0 " / 203 mm shells or 4.0 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 3.7 ft / 1.1 m
Roll period: 16.6 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.45
Seaboat quality (Average = 1.00): 1.05

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.500
Length to Beam Ratio: 8.24 : 1
'Natural speed' for length: 28.95 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.18 ft / 9.20 m
- Forecastle (20 %): 21.98 ft / 6.70 m
- Mid (70 %): 21.98 ft / 6.70 m (13.78 ft / 4.20 m aft of break)
- Quarterdeck (20 %): 13.78 ft / 4.20 m
- Stern: 13.78 ft / 4.20 m
- Average freeboard: 20.18 ft / 6.15 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 106.2 %
- Above water (accommodation/working, high = better): 100.6 %
Waterplane Area: 28,340 Square feet or 2,633 Square metres
Displacement factor (Displacement / loading): 124 %
Structure weight / hull surface area: 134 lbs/sq ft or 654 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.35
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate

Belt; 30+150@15°+40
0 forward 80 machinery 100 magazines 50 aft = 75.35 average
40tons for 25mm deck over torpedoes
40tons for 4x37mm quadruple mounts
48tons for 16x600mm torpedoes
75tons for 2 aircraft
50tons for CIC
50tons for diesel generators
=300tons

30.87knts sea speed in state 4.
30.43knts at deep load
31.71knts at light load

Included for completeness
Immunity zone vs. 8"/55 APC 260lb 30° TA
Magazines
5,000 - Infinty yds
Machinery
5,000 - 30,000yds

150mm/60 100lb 30° TA
Magazines
Proof, else 3000yds @ 0° TA
Machinery
Proof, else 3000yds @ 0° TA



Final Design, 1933

Displacement:
13,005 t light; 13,667 t standard; 16,585 t normal; 18,920 t full load

Dimensions: Length overall / water x beam x draught
637.63 ft / 623.36 ft x 65.62 ft (Bulges 75.69 ft) x 24.61 ft (normal load)
194.35 m / 190.00 m x 20.00 m (Bulges 23.07 m) x 7.50 m

Armament:
12 - 7.99" / 203 mm guns (4x3 guns), 291.01lbs / 132.00kg shells, 1931 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 3.94" / 100 mm guns (6 mounts), 33.07lbs / 15.00kg shells, 1931 Model
Anti-aircraft guns in deck mounts with hoists
on side, all forward
28 - 1.85" / 47.0 mm guns (7x4 guns), 3.17lbs / 1.44kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 3,845 lbs / 1,744 kg
Shells per gun, main battery: 150

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.12" / 130 mm 419.95 ft / 128.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 104 % of normal length

- Torpedo Bulkhead and Bulges:
1.57" / 40 mm 305.12 ft / 93.00 m 32.81 ft / 10.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 7.48" / 190 mm 4.92" / 125 mm 5.91" / 150 mm
2nd: 0.79" / 20 mm 0.79" / 20 mm -
3rd: 0.39" / 10 mm 0.39" / 10 mm -

- Armour deck: 2.97" / 75 mm, Conning tower: 5.91" / 150 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 86,000 shp / 64,156 Kw = 30.87 kts
Range 9,500nm at 20.00 kts
Bunker at max displacement = 5,253 tons

Complement:
729 - 949

Cost:
£5.113 million / $20.453 million

Distribution of weights at normal displacement:
Armament: 424 tons, 2.6 %
Armour: 3,932 tons, 23.7 %
- Belts: 879 tons, 5.3 %
- Torpedo bulkhead: 583 tons, 3.5 %
- Armament: 831 tons, 5.0 %
- Armour Deck: 1,555 tons, 9.4 %
- Conning Tower: 83 tons, 0.5 %
Machinery: 2,572 tons, 15.5 %
Hull, fittings & equipment: 5,977 tons, 36.0 %
Fuel, ammunition & stores: 3,580 tons, 21.6 %
Miscellaneous weights: 100 tons, 0.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
24,915 lbs / 11,301 Kg = 97.6 x 8.0 " / 203 mm shells or 4.2 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 3.9 ft / 1.2 m
Roll period: 16.0 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.39
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.500
Length to Beam Ratio: 8.24 : 1
'Natural speed' for length: 28.95 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.18 ft / 9.20 m
- Forecastle (20 %): 21.98 ft / 6.70 m
- Mid (60 %): 21.98 ft / 6.70 m (13.78 ft / 4.20 m aft of break)
- Quarterdeck (20 %): 13.78 ft / 4.20 m
- Stern: 13.78 ft / 4.20 m
- Average freeboard: 19.36 ft / 5.90 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 103.3 %
- Above water (accommodation/working, high = better): 142.5 %
Waterplane Area: 28,340 Square feet or 2,633 Square metres
Displacement factor (Displacement / loading): 132 %
Structure weight / hull surface area: 131 lbs/sq ft or 640 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.27
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Agusto Laid down 1932
Tiberio Laid down 1932
Caligola Laid down 1932

Caesar I, Italian ACR laid down 1932

Displacement:
17,142 t light; 18,129 t standard; 20,577 t normal; 22,535 t full load

Dimensions: Length overall / water x beam x draught
692.90 ft / 672.57 ft x 70.77 ft (Bulges 81.59 ft) x 26.25 ft (normal load)
211.20 m / 205.00 m x 21.57 m (Bulges 24.87 m) x 8.00 m

Armament:
6 - 12.01" / 305 mm guns (2x3 guns), 996.49lbs / 452.00kg shells, 1932 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
16 - 3.94" / 100 mm guns (8x2 guns), 33.07lbs / 15.00kg shells, 1932 Model
Anti-aircraft guns in deck mounts with hoists
on side, all amidships, 2 raised mounts - superfiring
44 - 1.85" / 47.0 mm guns (11x4 guns), 3.86lbs / 1.75kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 7 raised mounts
Weight of broadside 6,678 lbs / 3,029 kg
Shells per gun, main battery: 150
16 - 23.6" / 600 mm above water torpedoes

Armour:
Classified
- Belts: Width (max) Length (avg) Height (avg)
Main: 9.33" / 237 mm 426.51 ft / 130.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Upper: 0.79" / 20 mm 65.62 ft / 20.00 m 8.20 ft / 2.50 m
Main Belt covers 98 % of normal length

- Torpedo Bulkhead and Bulges:
1.57" / 40 mm 426.51 ft / 130.00 m 26.25 ft / 8.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.6" / 270 mm 7.48" / 190 mm 8.27" / 210 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm -
3rd: 0.39" / 10 mm 0.39" / 10 mm -

- Armour deck: 4.00" / 102 mm, Conning tower: 7.48" / 190 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 86,000 shp / 64,156 Kw = 30.01 kts
Range 7,000nm at 20.00 kts
Bunker at max displacement = 4,406 tons

Complement:
858 - 1,116

Cost:
£7.121 million / $28.484 million

Distribution of weights at normal displacement:
Armament: 728 tons, 3.5 %
Armour: 5,862 tons, 28.5 %
- Belts: 1,676 tons, 8.1 %
- Torpedo bulkhead: 652 tons, 3.2 %
- Armament: 971 tons, 4.7 %
- Armour Deck: 2,442 tons, 11.9 %
- Conning Tower: 121 tons, 0.6 %
Machinery: 2,538 tons, 12.3 %
Hull, fittings & equipment: 7,814 tons, 38.0 %
Fuel, ammunition & stores: 3,434 tons, 16.7 %
Miscellaneous weights: 200 tons, 1.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
28,864 lbs / 13,092 Kg = 33.3 x 12.0 " / 305 mm shells or 4.9 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 4.3 ft / 1.3 m
Roll period: 16.5 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.43
Seaboat quality (Average = 1.00): 1.04

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.500
Length to Beam Ratio: 8.24 : 1
'Natural speed' for length: 30.06 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 47
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: 29.53 ft / 9.00 m
- Forecastle (22 %): 18.04 ft / 5.50 m
- Mid (40 %): 16.40 ft / 5.00 m
- Quarterdeck (10 %): 16.40 ft / 5.00 m
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 18.01 ft / 5.49 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 97.0 %
- Above water (accommodation/working, high = better): 121.7 %
Waterplane Area: 32,978 Square feet or 3,064 Square metres
Displacement factor (Displacement / loading): 121 %
Structure weight / hull surface area: 153 lbs/sq ft or 745 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.22
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Belt 30+200@15° 237average
Deck
0 forwards 150 magazines 100 machinery 70 aft 101.67 average

New shells for 305mm guns. Range c. 340hm

40t = 25mm deck over torpedoes
48t = 16x600mm TT

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