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Aircraft Carriers, Seaplane Carriers, etc

Navarra, Iberia CVX laid down 1921

Navarra
La Mancha

Displacement:
18,465 t light; 18,942 t standard; 21,330 t normal; 23,156 t full load
Loading submergence 1,061 tons/feet

Dimensions:
623.36 ft x 94.82 ft x 25.26 ft (normal load)
190.00 m x 28.90 m x 7.70 m

Armament:
67 Aircraft Carried

8 - 5.12" / 130 mm guns12 - 2.24" / 57 mm AA guns
Weight of broadside 604 lbs / 274 kg

Armour:
Belt 9.02" / 229 mm, upper belt 5.91" / 150 mm, end belts 3.94" / 100 mm
Belts cover 79 % of normal area
Main belt does not fully protect magazines and engineering spaces
AA gun shields 5.91" / 150 mm,
Armour deck 2.36" / 60 mm, Conning tower 9.84" / 250 mm
Torpedo bulkhead 0.79" / 20 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 94,394 shp / 70,418 Kw = 29.00 kts
Range 10,800nm at 15.00 kts

Complement:
882 - 1,147

Cost:
£2.965 million / $11.860 million

Distribution of weights at normal displacement:
Armament: 76 tons, 0.4 %
Armour: 4,585 tons, 21.5 %
Belts: 2,397 tons, 11.2 %, Armament: 103 tons, 0.5 %, Armour Deck: 1,623 tons, 7.6 %
Conning Tower: 164 tons, 0.8 %, Torpedo bulkhead: 298 tons, 1.4 %
Machinery: 3,250 tons, 15.2 %
Hull, fittings & equipment: 6,054 tons, 28.4 %
Fuel, ammunition & stores: 2,865 tons, 13.4 %
Miscellaneous weights: 4,500 tons, 21.1 %

Metacentric height 5.5

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

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.10
Shellfire needed to sink: 22,701 lbs / 10,297 Kg = 53.8 x 6 " / 152 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: 70 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.03
Relative quality as seaboat: 1.06

Hull form characteristics:
Block coefficient: 0.500
Sharpness coefficient: 0.38
Hull speed coefficient 'M': 6.88
'Natural speed' for length: 24.97 kts
Power going to wave formation at top speed: 55 %
Trim: 66
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 96.1 %
Relative accommodation and working space: 154.0 %
(Average = 100%)
Displacement factor: 132 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.98
(Structure weight / hull surface area: 116 lbs / square foot or 564 Kg / square metre)
Relative longitudinal hull strength: 1.16
(for 19.19 ft / 5.85 m average freeboard, freeboard adjustment 1.57 ft)
Relative composite hull strength: 1.00

Toledo, Iberia CV laid down 1928

Toledo
Cordoba

Displacement:
18,264 t light; 18,763 t standard; 20,819 t normal; 22,463 t full load

Dimensions: Length overall / water x beam x draught
759.51 ft / 721.78 ft x 85.30 ft x 23.62 ft (normal load)
231.50 m / 220.00 m x 26.00 m x 7.20 m

Armament:
8 - 5.12" / 130 mm guns (4x2 guns), 67.03lbs / 30.40kg shells, 1925 Model
Breech loading guns in deck mounts with hoists
on side, all amidships, 2 raised mounts - superfiring
24 - 2.24" / 57.0 mm guns (12x2 guns), 5.65lbs / 2.56kg shells, 1926 Model
Breech loading guns in deck mounts with hoists
on side, evenly spread, 10 raised mounts
16 - 0.98" / 25.0 mm guns (8x2 guns), 0.48lbs / 0.22kg shells, 1928 Model
Breech loading guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 680 lbs / 308 kg
Shells per gun, main battery: 200

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 382.68 ft / 116.64 m 11.09 ft / 3.38 m
Ends: Unarmoured
Upper: 1.97" / 50 mm 459.32 ft / 140.00 m 18.70 ft / 5.70 m
Main Belt covers 82 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.97" / 50 mm -
2nd: 0.79" / 20 mm 0.79" / 20 mm -
3rd: 0.79" / 20 mm 0.79" / 20 mm -

- Armour deck: 3.94" / 100 mm, Conning tower: 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Electric motors, 2 shafts, 125,942 shp / 93,953 Kw = 32.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 3,700 tons

Complement:
866 - 1,126

Cost:
£4.809 million / $19.236 million

Distribution of weights at normal displacement:
Armament: 85 tons, 0.4 %
Armour: 4,601 tons, 22.1 %
- Belts: 1,451 tons, 7.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 95 tons, 0.5 %
- Armour Deck: 2,991 tons, 14.4 %
- Conning Tower: 64 tons, 0.3 %
Machinery: 3,921 tons, 18.8 %
Hull, fittings & equipment: 6,507 tons, 31.3 %
Fuel, ammunition & stores: 2,555 tons, 12.3 %
Miscellaneous weights: 3,150 tons, 15.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
28,265 lbs / 12,821 Kg = 421.7 x 5.1 " / 130 mm shells or 3.0 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 5.3 ft / 1.6 m
Roll period: 15.6 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.05
Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.501
Length to Beam Ratio: 8.46 : 1
'Natural speed' for length: 26.87 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 45.00 degrees
Stern overhang: 9.84 ft / 3.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.89 ft / 8.50 m
- Forecastle (30 %): 27.89 ft / 8.50 m (18.70 ft / 5.70 m aft of break)
- Mid (50 %): 18.70 ft / 5.70 m
- Quarterdeck (15 %): 18.70 ft / 5.70 m
- Stern: 18.70 ft / 5.70 m
- Average freeboard: 21.46 ft / 6.54 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.5 %
- Above water (accommodation/working, high = better): 168.9 %
Waterplane Area: 41,060 Square feet or 3,815 Square metres
Displacement factor (Displacement / loading): 128 %
Structure weight / hull surface area: 111 lbs/sq ft or 540 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.02
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

48 aircraft carried, 24 attack & 24 fighters, type undecided.
2 Autogyros to be carried, plus sufficient spares for 4 full aircraft

Bilbao Class, Iberia CV laid down 1936

Bilbao
Barcelona

Displacement:
33,626 t light; 34,594 t standard; 37,261 t normal; 39,394 t full load

Dimensions: Length overall / water x beam x draught
932.41 ft / 885.83 ft x 98.43 ft x 29.86 ft (normal load)
284.20 m / 270.00 m x 30.00 m x 9.10 m

Armament:
16 - 5.12" / 130 mm guns (8x2 guns), 67.03lbs / 30.40kg shells, 1936 Model
Breech loading guns in turrets (on barbettes)
on side ends, evenly spread, 4 raised mounts - superfiring
28 - 2.24" / 57.0 mm guns (14x2 guns), 5.65lbs / 2.56kg shells, 1936 Model
Breech loading guns in deck mounts
on side, evenly spread, 10 raised mounts
36 - 0.98" / 25.0 mm guns (8 mounts), 0.48lbs / 0.22kg shells, 1936 Model
Breech loading guns in deck mounts
on side, evenly spread, 7 raised mounts
Weight of broadside 1,248 lbs / 566 kg
Shells per gun, main battery: 300

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 557.74 ft / 170.00 m 16.40 ft / 5.00 m
Ends: Unarmoured
Upper: 1.97" / 50 mm 623.36 ft / 190.00 m 19.69 ft / 6.00 m
Main Belt covers 97 % of normal length

- Torpedo Bulkhead:
1.97" / 50 mm 557.74 ft / 170.00 m 26.25 ft / 8.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 0.79" / 20 mm 0.79" / 20 mm -
3rd: 0.79" / 20 mm 0.79" / 20 mm -

- Armour deck: 4.92" / 125 mm, Conning tower: 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 164,789 shp / 122,932 Kw = 33.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 4,801 tons

Complement:
1,340 - 1,743

Cost:
£10.310 million / $41.238 million

Distribution of weights at normal displacement:
Armament: 156 tons, 0.4 %
Armour: 9,581 tons, 25.7 %
- Belts: 2,523 tons, 6.8 %
- Torpedo bulkhead: 1,066 tons, 2.9 %
- Armament: 392 tons, 1.1 %
- Armour Deck: 5,505 tons, 14.8 %
- Conning Tower: 95 tons, 0.3 %
Machinery: 4,624 tons, 12.4 %
Hull, fittings & equipment: 11,365 tons, 30.5 %
Fuel, ammunition & stores: 3,635 tons, 9.8 %
Miscellaneous weights: 7,900 tons, 21.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
56,450 lbs / 25,605 Kg = 842.1 x 5.1 " / 130 mm shells or 8.6 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 6.0 ft / 1.8 m
Roll period: 16.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.06
Seaboat quality (Average = 1.00): 1.47

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.501
Length to Beam Ratio: 9.00 : 1
'Natural speed' for length: 34.25 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 45.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 40.03 ft / 12.20 m
- Forecastle (30 %): 40.03 ft / 12.20 m
- Mid (40 %): 40.03 ft / 12.20 m (16.08 ft / 4.90 m aft of break)
- Quarterdeck (15 %): 16.08 ft / 4.90 m
- Stern: 16.08 ft / 4.90 m
- Average freeboard: 25.66 ft / 7.82 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 85.1 %
- Above water (accommodation/working, high = better): 175.6 %
Waterplane Area: 60,466 Square feet or 5,618 Square metres
Displacement factor (Displacement / loading): 133 %
Structure weight / hull surface area: 131 lbs/sq ft or 639 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.02
- Longitudinal: 0.99
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

82 aircraft (48 attack, 32 fighters & 2 Autogyros) carried, type undecided, plus spares for 6 full aircraft.

Seville Class, Iberia CV laid down 1936

Seville
Porto

Displacement:
20,671 t light; 21,240 t standard; 23,178 t normal; 24,728 t full load

Dimensions: Length overall / water x beam x draught
759.51 ft / 721.78 ft x 85.30 ft x 26.25 ft (normal load)
231.50 m / 220.00 m x 26.00 m x 8.00 m

Armament:
8 - 5.12" / 130 mm guns (4x2 guns), 67.03lbs / 30.40kg shells, 1936 Model
Dual purpose guns in turrets (on barbettes)
on side, all amidships, 2 raised mounts - superfiring
24 - 2.24" / 57.0 mm guns (12x2 guns), 5.65lbs / 2.56kg shells, 1936 Model
Dual purpose guns in deck mounts
on side, evenly spread, 8 raised mounts
32 - 0.98" / 25.0 mm guns (16x2 guns), 0.48lbs / 0.22kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 8 raised mounts
Weight of broadside 687 lbs / 312 kg
Shells per gun, main battery: 250

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 505.25 ft / 154.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Upper: 1.97" / 50 mm 393.70 ft / 120.00 m 18.70 ft / 5.70 m
Main Belt covers 108 % of normal length

- Torpedo Bulkhead:
1.97" / 50 mm 505.25 ft / 154.00 m 19.69 ft / 6.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 0.79" / 20 mm 0.79" / 20 mm -
3rd: 0.79" / 20 mm 0.79" / 20 mm -

- Armour deck: 3.94" / 100 mm, Conning tower: 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 130,694 shp / 97,498 Kw = 33.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 3,488 tons

Complement:
939 - 1,221

Cost:
£6.902 million / $27.608 million

Distribution of weights at normal displacement:
Armament: 86 tons, 0.4 %
Armour: 5,821 tons, 25.1 %
- Belts: 1,721 tons, 7.4 %
- Torpedo bulkhead: 724 tons, 3.1 %
- Armament: 194 tons, 0.8 %
- Armour Deck: 3,113 tons, 13.4 %
- Conning Tower: 69 tons, 0.3 %
Machinery: 3,667 tons, 15.8 %
Hull, fittings & equipment: 7,097 tons, 30.6 %
Fuel, ammunition & stores: 2,507 tons, 10.8 %
Miscellaneous weights: 4,000 tons, 17.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
34,675 lbs / 15,728 Kg = 517.3 x 5.1 " / 130 mm shells or 5.3 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 4.7 ft / 1.4 m
Roll period: 16.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.06
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.502
Length to Beam Ratio: 8.46 : 1
'Natural speed' for length: 31.07 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 45.00 degrees
Stern overhang: 9.84 ft / 3.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.89 ft / 8.50 m
- Forecastle (30 %): 27.89 ft / 8.50 m
- Mid (46 %): 27.89 ft / 8.50 m (18.70 ft / 5.70 m aft of break)
- Quarterdeck (15 %): 18.70 ft / 5.70 m
- Stern: 18.70 ft / 5.70 m
- Average freeboard: 22.93 ft / 6.99 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 96.7 %
- Above water (accommodation/working, high = better): 185.3 %
Waterplane Area: 42,740 Square feet or 3,971 Square metres
Displacement factor (Displacement / loading): 130 %
Structure weight / hull surface area: 114 lbs/sq ft or 559 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.18
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

58 aircraft carried, 32 attack, 24 fighters & 2 Autogyros to be carried, type undecided, plus sufficient spares for 5 full aircraft

Lisbon Class Carrier

A class of carriers to replace the old La Manchas in service. Lisbon will be followed by at least one sister in 1946.

Lisbon, laid down 1945
Cadiz, laid down 1946

Enter ship name, Enter country Enter ship type laid down 1945

Displacement:
36,087 t light; 37,178 t standard; 39,745 t normal; 41,798 t full load

Dimensions: Length overall / water x beam x draught
921.68 ft / 885.83 ft x 104.99 ft x 29.86 ft (normal load)
280.93 m / 270.00 m x 32.00 m x 9.10 m

Armament:
16 - 5.12" / 130 mm guns (8x2 guns), 67.03lbs / 30.41kg shells, 1945 Model
Dual purpose guns in turrets (on barbettes)
on side, evenly spread, 2 raised mounts
28 - 2.24" / 57.0 mm guns (14x2 guns), 5.65lbs / 2.56kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, all amidships
36 - 0.98" / 25.0 mm guns (9x4 guns), 0.48lbs / 0.22kg shells, 1945 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 1,248 lbs / 566 kg
Shells per gun, main battery: 400

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 575.79 ft / 175.50 m 16.40 ft / 5.00 m
Ends: Unarmoured
Upper: 1.97" / 50 mm 623.36 ft / 190.00 m 19.69 ft / 6.00 m
Main Belt covers 100 % of normal length

- Torpedo Bulkhead:
1.97" / 50 mm 575.79 ft / 175.50 m 26.31 ft / 8.02 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 0.79" / 20 mm 0.79" / 20 mm -
3rd: 0.79" / 20 mm - -

- Armour deck: 3.94" / 100 mm, Conning tower: 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 171,582 shp / 128,000 Kw = 32.99 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 4,619 tons

Complement:
1,406 - 1,829

Cost:
£13.823 million / $55.291 million

Distribution of weights at normal displacement:
Armament: 156 tons, 0.4 %
Armour: 8,934 tons, 22.5 %
- Belts: 2,578 tons, 6.5 %
- Torpedo bulkhead: 1,103 tons, 2.8 %
- Armament: 456 tons, 1.1 %
- Armour Deck: 4,698 tons, 11.8 %
- Conning Tower: 99 tons, 0.2 %
Machinery: 4,333 tons, 10.9 %
Hull, fittings & equipment: 14,751 tons, 37.1 %
Fuel, ammunition & stores: 3,658 tons, 9.2 %
Miscellaneous weights: 7,913 tons, 19.9 %
-6,724 t: Air group of 82 a/c
-200 t: Eight disassembled spares
-200 t: Electronics, fire control, comms
-200 t: CIC
-200 t: Flight operations facilities
-200 t: Enhanced damage control equipment
-189 t: Weight reserve

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
97,187 lbs / 44,083 Kg = 1,449.8 x 5.1 " / 130 mm shells or 14.0 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 7.0 ft / 2.1 m
Roll period: 16.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.08
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.501
Length to Beam Ratio: 8.44 : 1
'Natural speed' for length: 34.43 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 13.12 ft / 4.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 39.37 ft / 12.00 m
- Forecastle (20 %): 39.37 ft / 12.00 m
- Mid (50 %): 39.37 ft / 12.00 m
- Quarterdeck (15 %): 39.37 ft / 12.00 m
- Stern: 39.37 ft / 12.00 m
- Average freeboard: 39.37 ft / 12.00 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 76.1 %
- Above water (accommodation/working, high = better): 344.0 %
Waterplane Area: 64,497 Square feet or 5,992 Square metres
Displacement factor (Displacement / loading): 149 %
Structure weight / hull surface area: 141 lbs/sq ft or 688 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.16
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather