Aircraft Carriers

[The Rock Doctor]

Time to split the naval aviation thread.

[The Rock Doctor]

Labedz Class Aircraft Carrier

Per the 23 Feb 22 news item, the experimental aircraft carrier Labedz would embark up to six fighters in a local air-defence role.  Based on the Rybolow class korsarz, also pictured in the illustration below, the ship would be relatively easily refurbished to take on a new role as a korsarz or other light, faster combatant once it becomes obsolete as an aircraft carrier.

Which might be sooner than expected once the Union tries to land aircraft on the landing deck, but who knows?  Maybe they'll instead raze the superstructure and put in a full-length flight deck once they have the next carrier tech figure out.  The world is their oyster.

The assumption is that the hanger can handle two fighters with folded wings aft of the lift, and two pairs of fighters forward of the lift, where the ship's beam nears its widest.  Naturally, I've costed the airgroup with the logic that this is a conversion, more or less.

Update:  Trials quickly established that the ship's layout created considerable turbulence and led to a high crash rate amongst landing aviators.  A refurbishment in 1925 covered off this and a couple other things:

-The main thing is clearing the flight deck off.  The above-decks superstructure will be scaled down and shifted to port; the funnels also.  The funnels and adjacent superstructure will also have some plating covering up gaps between them in order to reduce turbulence. Some below-flight deck working space will be created to offset the loss of working space in the actual island.  Why port?  Because Union engines torque clockwise and pilots are used to veering to starboard when landings need to be aborted.

-The armament will also be adjusted.  The forward 130mm 2-gun mount (that is actually a twin mount because I didn't get the research done in time) has awful firing arcs and will be yanked.  From what's known about the recent Costa Rican war, a heavier AA battery is warranted so four 100mm guns will be added in sponsons adjacent to the hanger deck.  Existing 50mm guns will be relocated as well - on the port side, to fore and aft of the island.  On the starboard side, in a sponson opposite the island.  Some 15mm machine guns will also be added.

Labedz, LT-5, laid down 1922


As Refurbished 1925

Enter ship name, Enter country Enter ship type laid down 1922

Displacement:
   4,411 t light; 4,549 t standard; 4,880 t normal; 5,145 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (491.08 ft / 482.28 ft) x 45.93 ft x (15.42 / 16.05 ft)
   (149.68 m / 147.00 m) x 14.00 m  x (4.70 / 4.89 m)

Armament:
      2 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1922 Model
     2 x Single mounts on sides, aft deck aft
      4 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
     Anti-air guns in deck mounts, 1922 Model
     4 x Single mounts on sides, aft deck forward
      4 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.75kg shells, 250 per gun
     Anti-air guns in deck mounts, 1922 Model
     2 x Single mounts on sides, forward deck centre
     2 x Single mounts on sides, forward deck centre
      2 raised mounts
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1922 Model
     4 x Twin mounts on sides, evenly spread
      Weight of broadside 275 lbs / 125 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.79" / 20 mm      1.97" / 50 mm
   2nd:   0.79" / 20 mm   0.79" / 20 mm            -
   3rd:   0.79" / 20 mm   0.39" / 10 mm            -
   4th:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 45,577 shp / 34,000 Kw = 30.07 kts
   Range 8,500nm at 10.00 kts
   Bunker at max displacement = 596 tons

Complement:
   291 - 379

Cost:
   £1.066 million / $4.264 million

Distribution of weights at normal displacement:
   Armament: 63 tons, 1.3 %
   Armour: 44 tons, 0.9 %
      - Armament: 44 tons, 0.9 %
   Machinery: 1,546 tons, 31.7 %
   Hull, fittings & equipment: 1,943 tons, 39.8 %
   Fuel, ammunition & stores: 469 tons, 9.6 %
   Miscellaneous weights: 815 tons, 16.7 %
      - Hull below water: 360 tons
      - Hull above water: 360 tons
      - On freeboard deck: 50 tons
      - Above deck: 45 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4,841 lbs / 2,196 Kg = 72.2 x 5.1 " / 130 mm shells or 0.9 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 2.1 ft / 0.6 m
   Roll period: 13.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 80 %
         - Recoil effect (Restricted arc if above 1.00): 0.20
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has rise aft of midbreak, low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.507
   Length to Beam Ratio: 10.50 : 1
   'Natural speed' for length: 21.96 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 40
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 4.92 ft / 1.50 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   15.00 %,  21.98 ft / 6.70 m,  17.06 ft / 5.20 m
      - Forward deck:   40.00 %,  17.06 ft / 5.20 m,  17.06 ft / 5.20 m
      - Aft deck:   30.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Quarter deck:   15.00 %,  17.06 ft / 5.20 m,  17.06 ft / 5.20 m
      - Average freeboard:      22.08 ft / 6.73 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 123.1 %
      - Above water (accommodation/working, high = better): 230.0 %
   Waterplane Area: 14,759 Square feet or 1,371 Square metres
   Displacement factor (Displacement / loading): 118 %
   Structure weight / hull surface area: 64 lbs/sq ft or 313 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.79
      - Longitudinal: 3.25
      - Overall: 0.91
   Caution: Hull subject to strain in open-sea
   Hull space for machinery, storage, compartmentation is cramped
   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

As Built 1922

Enter ship name, Enter country Enter ship type laid down 1922

Displacement:
   4,411 t light; 4,549 t standard; 4,880 t normal; 5,145 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (491.08 ft / 482.28 ft) x 45.93 ft x (15.42 / 16.05 ft)
   (149.68 m / 147.00 m) x 14.00 m  x (4.70 / 4.89 m)

Armament:
      4 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1922 Model
     1 x 2-gun mount on centreline, forward deck forward
     2 x Single mounts on sides, aft deck aft
      4 - 0.39" / 10.0 mm 45.0 cal guns - 0.03lbs / 0.01kg shells, 4,000 per gun
     Machine guns in deck mounts, 1922 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      4 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.74kg shells, 250 per gun
     Anti-air guns in deck mounts, 1922 Model
     4 x Single mounts on sides, evenly spread
      Weight of broadside 286 lbs / 130 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.79" / 20 mm      1.97" / 50 mm
   2nd:   0.39" / 10 mm         -               -
   3rd:   0.79" / 20 mm   0.39" / 10 mm            -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 45,577 shp / 34,000 Kw = 30.07 kts
   Range 8,500nm at 10.00 kts
   Bunker at max displacement = 596 tons

Complement:
   291 - 379

Cost:
   £1.084 million / $4.336 million

Distribution of weights at normal displacement:
   Armament: 76 tons, 1.6 %
      - Guns: 76 tons, 1.6 %
   Armour: 35 tons, 0.7 %
      - Armament: 35 tons, 0.7 %
   Machinery: 1,546 tons, 31.7 %
   Hull, fittings & equipment: 1,939 tons, 39.7 %
   Fuel, ammunition & stores: 469 tons, 9.6 %
   Miscellaneous weights: 815 tons, 16.7 %
      - Hull below water: 360 tons
      - Hull above water: 360 tons
      - On freeboard deck: 50 tons
      - Above deck: 45 tons

Fittings:
-720 t:  6 wheeled, single-seat aircraft (costed as conversion):  BW/AW
-8 t:  1918 fire control (AD)
-25 t:  L/R wireless (AD)
-10 t:  Secondary S/R wireless (AD)
-20 t:  Air operations centre (FD)
-32 t:  Weight reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4,462 lbs / 2,024 Kg = 66.6 x 5.1 " / 130 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.06
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 14.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.35
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has rise aft of midbreak, low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.507
   Length to Beam Ratio: 10.50 : 1
   'Natural speed' for length: 21.96 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 4.92 ft / 1.50 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   15.00 %,  21.98 ft / 6.70 m,  17.06 ft / 5.20 m
      - Forward deck:   40.00 %,  17.06 ft / 5.20 m,  17.06 ft / 5.20 m
      - Aft deck:   30.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Quarter deck:   15.00 %,  17.06 ft / 5.20 m,  17.06 ft / 5.20 m
      - Average freeboard:      22.08 ft / 6.73 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 124.2 %
      - Above water (accommodation/working, high = better): 230.0 %
   Waterplane Area: 14,759 Square feet or 1,371 Square metres
   Displacement factor (Displacement / loading): 116 %
   Structure weight / hull surface area: 64 lbs/sq ft or 314 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.78
      - Longitudinal: 3.24
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Carrier Notes:

-Waterplane area 1,371 m2 allows 21 A/C, halved if using flight-deck cruiser rules to 10.  This only carries 6.

[The Rock Doctor]

Wrona Class Aircraft Carrier

Small carriers that'll work out some conceptual ideas in the Caribbean and Atlantic with a small, mixed airgroup of fighters and torpedo-bombers.

Wrona, LT-06, laid down 1925
Golab, LT-07, laid down 1926

Enter ship name, Enter country Enter ship type laid down 1925

Displacement:
   10,997 t light; 11,322 t standard; 12,452 t normal; 13,355 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (545.08 ft / 529.20 ft) x 75.79 ft x (22.64 / 23.84 ft)
   (166.14 m / 161.30 m) x 23.10 m  x (6.90 / 7.27 m)

Armament:
      6 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1925 Model
     1 x 2-gun mount on centreline, aft deck aft
     2 x 2-gun mounts on sides, aft deck centre
      4 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
     Anti-air guns in deck mounts, 1925 Model
     4 x Single mounts on sides, evenly spread
      12 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1925 Model
     4 x Single mounts on sides, evenly spread
     4 x Twin mounts on sides, evenly spread
      Weight of broadside 530 lbs / 240 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.95" / 75 mm   371.72 ft / 113.30 m   11.81 ft / 3.60 m
   Ends:   1.18" / 30 mm     78.74 ft / 24.00 m   11.81 ft / 3.60 m
     78.74 ft / 24.00 m Unarmoured ends
     Main Belt covers 108 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   2nd:   0.79" / 20 mm   0.79" / 20 mm            -

   - Armoured deck - single deck: 0.98" / 25 mm For and Aft decks
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 107,238 shp / 80,000 Kw = 32.04 kts
   Range 18,000nm at 10.00 kts
   Bunker at max displacement = 2,033 tons

Complement:
   589 - 766

Cost:
   £3.003 million / $12.010 million

Distribution of weights at normal displacement:
   Armament: 133 tons, 1.1 %
   Armour: 1,118 tons, 9.0 %
      - Belts: 585 tons, 4.7 %
      - Armament: 51 tons, 0.4 %
      - Armour Deck: 482 tons, 3.9 %
   Machinery: 3,482 tons, 28.0 %
   Hull, fittings & equipment: 4,550 tons, 36.5 %
   Fuel, ammunition & stores: 1,455 tons, 11.7 %
   Miscellaneous weights: 1,714 tons, 13.8 %
      - Hull below water: 732 tons
      - Hull above water: 720 tons
      - On freeboard deck: 112 tons
      - Above deck: 150 tons

Fittings:
-12 t:  4x lightweight 530mm torpedo tubes, fixed astern (BW)
-1440 t:  18 or 15 aircraft, depending on the vintage (BW/AW)
-25 t:  Hydraulic catapult, starboard bow (FD)
-100 t:  Command and flight operations facilities (FD/AD)
-35 t:  L/R and extra S/R wireless (AD)
-25 t:  Nightfighting doodads (AD)
-14 t:  1918 fire control (AD)
-63 t:  Weight reserve (FD/AD)


Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     16,784 lbs / 7,613 Kg = 250.4 x 5.1 " / 130 mm shells or 1.8 torpedoes
   Stability (Unstable if below 1.00): 1.26
   Metacentric height 5.0 ft / 1.5 m
   Roll period: 14.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 90 %
         - Recoil effect (Restricted arc if above 1.00): 0.09
   Seaboat quality  (Average = 1.00): 1.49

Hull form characteristics:
   Hull has low forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.480 / 0.489
   Length to Beam Ratio: 6.98 : 1
   'Natural speed' for length: 23.00 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 6.56 ft / 2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   10.00 %,  25.59 ft / 7.80 m,  19.69 ft / 6.00 m
      - Forward deck:   40.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Aft deck:   40.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Quarter deck:   10.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Average freeboard:      28.78 ft / 8.77 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 107.4 %
      - Above water (accommodation/working, high = better): 250.6 %
   Waterplane Area: 26,247 Square feet or 2,438 Square metres
   Displacement factor (Displacement / loading): 122 %
   Structure weight / hull surface area: 103 lbs/sq ft or 503 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.87
      - Longitudinal: 3.39
      - 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

[The Rock Doctor]

Centaury Class Aircraft Carrier

An enlarged version of the preceding Wrona class, really - a lot of similar parameters like armor and speed.  Big difference is the size of the airgroup.  Two units are anticipated.

Centaury, LT-11, laid down 1928
Smok, LT-12, laid down 1929

Enter ship name, Enter country Enter ship type laid down 1928

Displacement:
   14,994 t light; 15,507 t standard; 16,881 t normal; 17,980 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (668.41 ft / 645.01 ft) x 75.46 ft x (24.28 / 25.46 ft)
   (203.73 m / 196.60 m) x 23.00 m  x (7.40 / 7.76 m)

Armament:
      6 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 400 per gun
     Quick firing guns in deck and hoist mounts, 1928 Model
     2 x 2-gun mounts on sides, aft deck centre
     1 x 2-gun mount on centreline, aft deck aft
      8 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 400 per gun
     Breech loading guns in deck mounts, 1928 Model
     8 x Single mounts on sides, evenly spread
      12 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.75kg shells, 1,000 per gun
     Anti-air guns in deck mounts, 1928 Model
     6 x Twin mounts on sides, evenly spread
      16 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1928 Model
     8 x Twin mounts on sides, evenly spread
      Weight of broadside 700 lbs / 317 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.54" / 90 mm   419.26 ft / 127.79 m   16.37 ft / 4.99 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   2nd:   0.79" / 20 mm   0.59" / 15 mm            -
   3rd:   0.79" / 20 mm   0.59" / 15 mm            -
   4th:   0.59" / 15 mm         -               -

   - Armoured deck - single deck: 1.57" / 40 mm For and Aft decks
   Forecastle: 0.98" / 25 mm  Quarter deck: 1.57" / 40 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 115,281 shp / 86,000 Kw = 32.01 kts
   Range 18,000nm at 10.00 kts
   Bunker at max displacement = 2,473 tons

Complement:
   739 - 962

Cost:
   £4.128 million / $16.512 million

Distribution of weights at normal displacement:
   Armament: 158 tons, 0.9 %
   Armour: 2,023 tons, 12.0 %
      - Belts: 1,014 tons, 6.0 %
      - Armament: 88 tons, 0.5 %
      - Armour Deck: 921 tons, 5.5 %
   Machinery: 3,589 tons, 21.3 %
   Hull, fittings & equipment: 5,865 tons, 34.7 %
   Fuel, ammunition & stores: 1,887 tons, 11.2 %
   Miscellaneous weights: 3,359 tons, 19.9 %
      - Hull below water: 1,441 tons
      - Hull above water: 1,425 tons
      - On freeboard deck: 193 tons
      - Above deck: 300 tons

Fittings:
-2,850 t:  Airgroup (35/30 A/C), BW/AW
-16 t:  4x1 530mm torpedoes, fixed astern, no reloads, BW
-16 t:  Fire control (AD)
-50 t:  L/R radio x 2 (AD)
-10 t:  Nightfighting doodads (AD)
-10 t:  Extra S/R radio (AD)
-100 t:  Flight operations facilities (AD)
-100 Flag facilities (FD)
-50 t:  2 steam catapults (FD)
-55 + 114 t:  Weight reserve (FD/AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     27,479 lbs / 12,464 Kg = 409.9 x 5.1 " / 130 mm shells or 2.4 torpedoes
   Stability (Unstable if below 1.00): 1.31
   Metacentric height 5.3 ft / 1.6 m
   Roll period: 13.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.08
   Seaboat quality  (Average = 1.00): 1.76

Hull form characteristics:
   Hull has low forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.508
   Length to Beam Ratio: 8.55 : 1
   'Natural speed' for length: 25.40 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 40
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 13.12 ft / 4.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  28.22 ft / 8.60 m,  21.65 ft / 6.60 m
      - Forward deck:   40.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Aft deck:   25.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Quarter deck:   15.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Average freeboard:      28.48 ft / 8.68 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 91.7 %
      - Above water (accommodation/working, high = better): 246.8 %
   Waterplane Area: 32,429 Square feet or 3,013 Square metres
   Displacement factor (Displacement / loading): 129 %
   Structure weight / hull surface area: 107 lbs/sq ft or 521 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.28
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

WP Area allows:  46 planes
2660 t allows:  35 or 30 planes

[The Rock Doctor]

Hydry Class Aircraft Carrier

The Hydrys are heavier and better protected than the Centaury class, with a larger airgroup.  The sternchaser gun has been deleted in favor of a heavier flank battery, the space being used for a substantial overhang of the flight deck instead.

Hydry, LT-13, laid down 1932
Pegaza, LT-14, laid down 1933

Enter ship name, Enter country Enter ship type laid down 1932

Displacement:
   18,836 t light; 19,545 t standard; 21,155 t normal; 22,444 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (760.60 ft / 705.38 ft) x 75.46 ft x (26.25 / 27.48 ft)
   (231.83 m / 215.00 m) x 23.00 m  x (8.00 / 8.38 m)

Armament:
      12 - 5.12" / 130 mm 45.0 cal guns - 67.62lbs / 30.67kg shells, 500 per gun
     Dual purpose guns in deck and hoist mounts, 1932 Model
     6 x 2-gun mounts on side ends, majority aft
      16 - 1.97" / 50.0 mm 60.0 cal guns - 4.19lbs / 1.90kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1932 Model
     6 x Twin mounts on sides, evenly spread
     2 x Twin mounts on sides, forward deck aft
      2 raised mounts
      16 - 0.59" / 15.0 mm 90.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1932 Model
     8 x Twin mounts on sides, evenly spread
      Weight of broadside 880 lbs / 399 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   521.98 ft / 159.10 m   16.37 ft / 4.99 m
   Ends:   Unarmoured
     Main Belt covers 114% of normal length
     Main Belt inclined 16.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.57" / 40 mm   521.98 ft / 159.10 m   23.75 ft / 7.24 m
   Beam between torpedo bulkheads 55.77 ft / 17.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   3rd:   0.79" / 20 mm   0.59" / 15 mm            -
   4th:   0.59" / 15 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1.97" / 50 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 1.97" / 50 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 128,016 shp / 95,500 Kw = 32.02 kts
   Range 8,000nm at 15.00 kts
   Bunker at max displacement = 2,899 tons

Complement:
   876 - 1,140

Cost:
   £5.778 million / $23.113 million

Distribution of weights at normal displacement:
   Armament: 251 tons, 1.2%
      - Guns: 251 tons, 1.2%
   Armour: 3,499 tons, 16.5%
      - Belts: 1,363 tons, 6.4%
      - Torpedo bulkhead: 722 tons, 3.4%
      - Armament: 98 tons, 0.5%
      - Armour Deck: 1,315 tons, 6.2%
   Machinery: 3,779 tons, 17.9%
   Hull, fittings & equipment: 6,949 tons, 32.8%
   Fuel, ammunition & stores: 2,320 tons, 11.0%
   Miscellaneous weights: 4,359 tons, 20.6%
      - Hull below water: 1,936 tons
      - Hull above water: 1,920 tons
      - On freeboard deck: 153 tons
      - Above deck: 350 tons

Fittings:
-1,920 + 1,920 t:  Airgroup (BW/AW)
-16 t:  4x1 530mm heavyweight torpedoes, fixed astern, no reloads (BW)
-50 t:  2 steam catapults (FD)
-50 + 50 t:  Flag facilities (FD/AD)
-100 t:  Flight operations (AD)
-26 t:  Fire control (AD)
-25 t:  Huelsmeyer device (AD)
-10 t:  Nightfighting doodads (AD)
-60 t:  Redundant  L/R + extra S/R wireless (AD)
-53 + 79 t:  Weight reserve (FD/AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     34,098 lbs / 15,466 Kg = 508.7 x 5.1 " / 130 mm shells or 4.2 torpedoes
   Stability (Unstable if below 1.00): 1.20
   Metacentric height 4.6 ft / 1.4 m
   Roll period: 14.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 90 %
         - Recoil effect (Restricted arc if above 1.00): 0.15
   Seaboat quality  (Average = 1.00): 1.95

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.530 / 0.537
   Length to Beam Ratio: 9.35 : 1
   'Natural speed' for length: 26.56 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 46
   Bow angle (Positive = bow angles forward): 21.00 degrees
   Stern overhang: 41.99 ft / 12.80 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   11.00%,  34.45 ft / 10.50 m,  29.53 ft / 9.00 m
      - Forward deck:   40.00%,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Aft deck:   34.00%,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Quarter deck:   15.00%,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Average freeboard:      29.74 ft / 9.07 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 112.5%
      - Above water (accommodation/working, high = better): 234.1%
   Waterplane Area: 36,459 Square feet or 3,387 Square metres
   Displacement factor (Displacement / loading): 131%
   Structure weight / hull surface area: 109 lbs/sq ft or 533 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.12
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

WP Area allows:  52 planes
48 or 40 planes