Aztec Ship Designs 1929-1934

[TacCovert4]

And yes, that's a full 6 year build ship there.....

The decision for me is, whether to look at having a very few of these extremely powerful battleships.....or working up the smaller ships.....or even doing both.

I just ran the guns through Parallel Ballistics in comparison with my 400/45.

The majority of existing BBs run a belt somewhere around 340mm, some go as high as 380mm, and with angling some will probably give you around 400-410mm of protection.

The 450/45 can punch literally anything at 24,000m.....and can pierce 340mm belts at 30,000m.  Basically if the 450 can hit you, the 450 can penetrate you.

The 400/45 can punch anything at 17,000m.....and can pierce 340mm belt at 21,000m.  Most of the time, if 400 can hit you, 400 can penetrate you.

The 360/45 can punch anything at 12,000m.....and can pierce 340mm belt at 16,000m.  It's still a good shell, but it's really overshadowed by the massive guns for being able to reliably punch through armor and end an enemy vessel in just a few hits.

[The Rock Doctor]

That penetrating power is definitely a consideration for me as well.

I find that requires a really big hull, though - your example wouldn't fit through the Trans-Eryka Canal as it stands, and I have similar problems with my 450mm designs.

[TacCovert4]

That penetrating power is definitely a consideration for me as well.

I find that requires a really big hull, though - your example wouldn't fit through the Trans-Eryka Canal as it stands, and I have similar problems with my 450mm designs.

I really do feel the catch 22 the Japanese felt when they designed Yamato.  Either I build a fully conventional fleet that cam do well against the Mayans but would struggle against anybody else.....or I pursue ships that are budget killers but also capable of taking on the best in the world and winning.   And new concepts like carriers.

[TacCovert4]

Beginning to experiment with 'Aviation Cruisers'.  Basing off of the Lake-class Frigate, this variant loses the rear half of the main armament and brings the forward superfiring turret down to the main deck to clear room for flight ops aft.  The secondary goes to DP guns and on sponsons, along with quite a portion of the AA mounts, giving a 'gallery' all the way around the hangar.  She loses 35mm of her belt, and loses the end belt protection, but maintains the TDS and the deck is changed to a protected deck with a slightly higher belt to ensure the deck slopes are covered and provide maximum protection against AP hits against her citadel spaces. 

In exchange for the deletions.....she gains a full squadron of 12 aircraft, with 4 catapults to facilitate rapid launching and a landing deck aft that can also be used as a flying off deck (but the catapults are there to allow for closer to simultaneous launches).  The anticipated air group would consist of one flight of scouts/bombers with two flights of fighters, and the mission profile would be as air cover for the screening force or independent cruiser squadrons rather than an attack force.  This is a potential alternative to a redux of the Martinique-style 'light' carrier with 3-4 times the air group but no ability to independently behave as a cruiser or self-escort.

AC 1932, Aztec Through-Deck Cruiser laid down 1932

Displacement:
   12,038 t light; 12,531 t standard; 13,866 t normal; 14,934 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (646.33 ft / 639.76 ft) x 70.54 ft x (19.91 / 21.11 ft)
   (197.00 m / 195.00 m) x 21.50 m  x (6.07 / 6.44 m)

Armament:
      6 - 7.09" / 180 mm 50.0 cal guns - 188.39lbs / 85.45kg shells, 200 per gun
     Quick firing guns in turret on barbette mounts, 1932 Model
     2 x 3-gun mounts on centreline, forward evenly spread
      16 - 3.54" / 90.0 mm 55.0 cal guns - 24.01lbs / 10.89kg shells, 200 per gun
     Dual purpose guns in deck mounts, 1932 Model
     8 x Twin mounts on sides, aft evenly spread
      8 - 1.57" / 40.0 mm 55.0 cal guns - 2.12lbs / 0.96kg shells, 4,000 per gun
     Anti-air guns in deck and hoist mounts, 1932 Model
     2 x Single mounts on sides, aft deck forward
      4 raised mounts
      20 - 1.18" / 30.0 mm 50.0 cal guns - 0.86lbs / 0.39kg shells, 1,000 per gun
     Anti-air guns in deck and hoist mounts, 1932 Model
     10 x Single mounts on sides, evenly spread
      Weight of broadside 1,549 lbs / 702 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.15" / 80 mm   439.50 ft / 133.96 m   14.76 ft / 4.50 m
   Ends:   Unarmoured
     Main Belt covers 106 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.18" / 30 mm   439.50 ft / 133.96 m   19.69 ft / 6.00 m
   Beam between torpedo bulkheads 55.77 ft / 17.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   3.54" / 90 mm   2.99" / 76 mm      3.54" / 90 mm
   2nd:   2.36" / 60 mm   1.38" / 35 mm            -
   3rd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm
   4th:   0.98" / 25 mm         -         0.98" / 25 mm

   - Protected deck - single deck:
   For and Aft decks: 2.36" / 60 mm

   - Conning towers: Forward 3.15" / 80 mm, Aft 3.15" / 80 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 80,128 shp / 59,775 Kw = 30.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 2,403 tons

Complement:
   638 - 830

Cost:
   £4.087 million / $16.348 million

Distribution of weights at normal displacement:
   Armament: 447 tons, 3.2 %
      - Guns: 447 tons, 3.2 %
   Armour: 2,717 tons, 19.6 %
      - Belts: 839 tons, 6.0 %
      - Torpedo bulkhead: 378 tons, 2.7 %
      - Armament: 273 tons, 2.0 %
      - Armour Deck: 1,149 tons, 8.3 %
      - Conning Towers: 78 tons, 0.6 %
   Machinery: 2,365 tons, 17.1 %
   Hull, fittings & equipment: 5,256 tons, 37.9 %
   Fuel, ammunition & stores: 1,828 tons, 13.2 %
   Miscellaneous weights: 1,252 tons, 9.0 %
      - Hull below water: 570 tons
      - Hull above water: 570 tons
      - On freeboard deck: 20 tons
      - Above deck: 92 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     26,018 lbs / 11,802 Kg = 146.2 x 7.1 " / 180 mm shells or 3.8 torpedoes
   Stability (Unstable if below 1.00): 1.07
   Metacentric height 3.4 ft / 1.0 m
   Roll period: 16.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.40
   Seaboat quality  (Average = 1.00): 1.82

Hull form characteristics:
   Hull has rise aft of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.540 / 0.549
   Length to Beam Ratio: 9.07 : 1
   'Natural speed' for length: 25.29 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 65
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   18.00 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Forward deck:   30.00 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Aft deck:   38.00 %,  34.45 ft / 10.50 m,  34.45 ft / 10.50 m
      - Quarter deck:   14.00 %,  34.45 ft / 10.50 m,  34.45 ft / 10.50 m
      - Average freeboard:      26.57 ft / 8.10 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 95.5 %
      - Above water (accommodation/working, high = better): 253.5 %
   Waterplane Area: 31,201 Square feet or 2,899 Square metres
   Displacement factor (Displacement / loading): 137 %
   Structure weight / hull surface area: 107 lbs/sq ft or 523 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 1.98
      - Overall: 1.00
   Adequate 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


20t - 4 x Catapult

25t - LR Wireless
25t - NF Devices
44t - 1918 FC

950t - 12 x Aircraft (Expansion Space for 1933+ Aircraft allowed)

[The Rock Doctor]

So far I've had trouble making flight-deck cruisers work for me, but it's interesting to see others try it.

I take it you envision a couple of waist catapults in addition to the bow-launchers?

[TacCovert4]

So far I've had trouble making flight-deck cruisers work for me, but it's interesting to see others try it.

I take it you envision a couple of waist catapults in addition to the bow-launchers?

The idea is actually 4 side cats at deck level.   Launch overtop the AA installations.  To rapidly deploy maximum fighter coverage.

I'm still ambivalent.   This ship is self escorting.   But a martinique is so much more efficient on the tonnage with almost 4 times the flight group.

I'm going to have to review my cruisers to decide if I can afford to just mk2 martinique for the screen carrier role.

[TacCovert4]

An alternate design.  Only 8 aircraft, and they will have to be catapult launched floatplanes, though I've worked the freeboard to give them an actual hangar and hangar access.  Upside.....there are now 9 x 180mm guns in the familiar ABC layout forward, and the top of the hangar is where a significant chunk of the AA battery sits, which gives it almost a 360 degree field of fire.  So the previous one is more of a carrier-cruiser.  This is more of a cruiser with the ability to deploy an airgroup that is at least functional with the full ability to maintain and sortie aircraft unlike ships that only have armed scouts/spotters.

Lake-class, Aztec Frigate laid down 1932

Displacement:
   11,884 t light; 12,531 t standard; 13,866 t normal; 14,934 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (646.93 ft / 639.76 ft) x 70.54 ft x (19.91 / 21.11 ft)
   (197.18 m / 195.00 m) x 21.50 m  x (6.07 / 6.44 m)

Armament:
      9 - 7.09" / 180 mm 50.0 cal guns - 188.38lbs / 85.45kg shells, 200 per gun
     Quick firing guns in turret on barbette mounts, 1932 Model
     3 x 3-gun mounts on centreline, forward evenly spread
      1 raised mount
      18 - 3.54" / 90.0 mm 55.0 cal guns - 24.01lbs / 10.89kg shells, 400 per gun
     Dual purpose guns in deck mounts, 1932 Model
     3 x Twin mounts on centreline, forward deck aft
      1 raised mount - superfiring
     6 x Twin mounts on sides, aft evenly spread
      16 - 1.57" / 40.0 mm 55.0 cal guns - 2.11lbs / 0.96kg shells, 4,000 per gun
     Anti-air guns in deck and hoist mounts, 1932 Model
     4 x 4 row quad mounts on sides, aft evenly spread
      4 raised mounts
      20 - 1.18" / 30.0 mm 50.0 cal guns - 0.87lbs / 0.40kg shells, 1,000 per gun
     Anti-air guns in deck mounts, 1932 Model
     20 x Single mounts on sides, evenly spread
      Weight of broadside 2,179 lbs / 988 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   439.50 ft / 133.96 m   13.12 ft / 4.00 m
   Ends:   Unarmoured
     Main Belt covers 106 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      0.79" / 20 mm   439.50 ft / 133.96 m   19.69 ft / 6.00 m
   Beam between torpedo bulkheads 55.77 ft / 17.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.12" / 130 mm   2.99" / 76 mm      4.53" / 115 mm
   2nd:   2.36" / 60 mm   1.38" / 35 mm            -
   3rd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm

   - Armoured deck - single deck:
   For and Aft decks: 2.36" / 60 mm

   - Conning towers: Forward 3.94" / 100 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 80,128 shp / 59,775 Kw = 30.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 2,403 tons

Complement:
   638 - 830

Cost:
   £4.349 million / $17.395 million

Distribution of weights at normal displacement:
   Armament: 639 tons, 4.6 %
      - Guns: 639 tons, 4.6 %
   Armour: 2,818 tons, 20.3 %
      - Belts: 934 tons, 6.7 %
      - Torpedo bulkhead: 252 tons, 1.8 %
      - Armament: 433 tons, 3.1 %
      - Armour Deck: 1,149 tons, 8.3 %
      - Conning Tower: 49 tons, 0.4 %
   Machinery: 2,365 tons, 17.1 %
   Hull, fittings & equipment: 5,137 tons, 37.0 %
   Fuel, ammunition & stores: 1,982 tons, 14.3 %
   Miscellaneous weights: 926 tons, 6.7 %
      - Hull below water: 380 tons
      - Hull above water: 412 tons
      - On freeboard deck: 52 tons
      - Above deck: 82 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     25,610 lbs / 11,616 Kg = 143.9 x 7.1 " / 180 mm shells or 3.5 torpedoes
   Stability (Unstable if below 1.00): 1.19
   Metacentric height 4.1 ft / 1.2 m
   Roll period: 14.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.43
   Seaboat quality  (Average = 1.00): 1.34

Hull form characteristics:
   Hull has rise aft of midbreak, low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.540 / 0.549
   Length to Beam Ratio: 9.07 : 1
   'Natural speed' for length: 25.29 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 52
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   18.00 %,  19.69 ft / 6.00 m,  16.40 ft / 5.00 m
      - Forward deck:   30.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   38.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Quarter deck:   14.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Average freeboard:      22.41 ft / 6.83 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 98.3 %
      - Above water (accommodation/working, high = better): 238.2 %
   Waterplane Area: 31,201 Square feet or 2,899 Square metres
   Displacement factor (Displacement / loading): 132 %
   Structure weight / hull surface area: 117 lbs/sq ft or 571 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.37
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily


32t - 2 x 4 x 21in HW TT on sides aft (Notched into sides)

25t - LR Wireless
25t - NF Devices
64t - 1918 FC

760t - 8 x Floatplane Fighters/Bombers
10t - 2 x Catapult Quarterdeck
10t - Floatplane Recovery Crane Aft

[TacCovert4]

And finally, in the trifecta of options for a carrier to put with the cruiser forces......I go directly away from something with cruiser armament, or even cruiser armor for the most part.....and go for a pure aircraft carrier with three squadrons (generally doctrine is to have 2 squadrons of fighters and 1 of bombers).  Upside, 3 squadrons of aircraft and full handling facilities.  Downside, requires an escorting cruiser.

Martinique, Aztec Aircraft Carrier laid down 1932

Displacement:
   14,553 t light; 15,043 t standard; 16,355 t normal; 17,404 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (599.21 ft / 587.27 ft) x 68.90 ft x (25.26 / 26.55 ft)
   (182.64 m / 179.00 m) x 21.00 m  x (7.70 / 8.09 m)

Armament:
      8 - 4.72" / 120 mm 55.0 cal guns - 56.91lbs / 25.81kg shells, 300 per gun
     Dual purpose guns in deck and hoist mounts, 1932 Model
     2 x Twin mounts on sides amidships
      2 raised mounts
     2 x Twin mounts on sides amidships
      2 double raised mounts
      16 - 1.57" / 40.0 mm 55.0 cal guns - 2.11lbs / 0.96kg shells, 4,000 per gun
     Anti-air guns in deck and hoist mounts, 1932 Model
     4 x 4 row quad mounts on side ends, evenly spread
      16 - 1.18" / 30.0 mm 50.0 cal guns - 0.87lbs / 0.40kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1932 Model
     20 x Single mounts on sides, evenly spread
      Weight of broadside 503 lbs / 228 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.15" / 80 mm   405.22 ft / 123.51 m   10.83 ft / 3.30 m
   Ends:   Unarmoured
     Main Belt covers 106 % of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      0.79" / 20 mm   405.22 ft / 123.51 m   21.98 ft / 6.70 m
   Beam between torpedo bulkheads 52.49 ft / 16.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   1.18" / 30 mm      1.18" / 30 mm
   2nd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm

   - Armoured deck - single deck:
   For and Aft decks: 2.36" / 60 mm

   - Conning towers: Forward 1.97" / 50 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 106,177 shp / 79,208 Kw = 31.00 kts
   Range 9,000nm at 14.00 kts
   Bunker at max displacement = 2,361 tons

Complement:
   723 - 940

Cost:
   £4.580 million / $18.321 million

Distribution of weights at normal displacement:
   Armament: 149 tons, 0.9 %
      - Guns: 149 tons, 0.9 %
   Armour: 1,983 tons, 12.1 %
      - Belts: 573 tons, 3.5 %
      - Torpedo bulkhead: 260 tons, 1.6 %
      - Armament: 61 tons, 0.4 %
      - Armour Deck: 1,063 tons, 6.5 %
      - Conning Tower: 27 tons, 0.2 %
   Machinery: 3,134 tons, 19.2 %
   Hull, fittings & equipment: 5,782 tons, 35.4 %
   Fuel, ammunition & stores: 1,801 tons, 11.0 %
   Miscellaneous weights: 3,505 tons, 21.4 %
      - Hull below water: 1,710 tons
      - Hull above water: 1,710 tons
      - On freeboard deck: 10 tons
      - Above deck: 75 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     26,750 lbs / 12,134 Kg = 507.4 x 4.7 " / 120 mm shells or 3.0 torpedoes
   Stability (Unstable if below 1.00): 1.24
   Metacentric height 4.2 ft / 1.3 m
   Roll period: 14.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.15
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.560 / 0.567
   Length to Beam Ratio: 8.52 : 1
   'Natural speed' for length: 24.23 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   25.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Forward deck:   30.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Aft deck:   39.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Quarter deck:   6.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Average freeboard:      32.81 ft / 10.00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 117.5 %
      - Above water (accommodation/working, high = better): 246.4 %
   Waterplane Area: 28,504 Square feet or 2,648 Square metres
   Displacement factor (Displacement / loading): 133 %
   Structure weight / hull surface area: 100 lbs/sq ft or 488 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.85
      - Longitudinal: 4.49
      - 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

3420t - 36 Aircraft (1933 Tech)
25t - LR Radio
10t - Additional SR Radio (for air group control)
15t - 1918 FC
25t - NF Devices
10t - 2 x Deck Catapult Forward Port and Starboard

Main Battery is in ABXY Arrangement on Starboard Side with the Island. 

AA Battery is in Sponson Galleries with 40mm mounts fore and aft on each sponson and 30mm pintles in the intervening gallery.

[TacCovert4]

And since I'm working on this program of laying down a single BB every 2 years, I need something in between the 1928 HMS Conqueror....and the HMS Royal Sovereign monster in 1932.  So a revision of the Conqueror, the engineering improvements allow for a belt that's 25mm thicker (though tapered), and a slightly thicker TDS.  Otherwise they're basically as close to twins as we're likely to see in this new method of building battleships for the RAN:

Vanguard (As Built), Aztec Fast Battleship laid down 1930

Displacement:
   46,140 t light; 48,331 t standard; 51,421 t normal; 53,894 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (865.16 ft / 853.02 ft) x 121.39 ft x (31.04 / 32.22 ft)
   (263.70 m / 260.00 m) x 37.00 m  x (9.46 / 9.82 m)

Armament:
      8 - 15.75" / 400 mm 45.0 cal guns - 1,969.41lbs / 893.31kg shells, 110 per gun
     Breech loading guns in turret on barbette mounts, 1930 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      20 - 5.12" / 130 mm 50.0 cal guns - 70.97lbs / 32.19kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1930 Model
     10 x Twin mounts on sides, evenly spread
      4 raised mounts
      10 - 2.76" / 70.0 mm 50.0 cal guns - 11.09lbs / 5.03kg shells, 300 per gun
     Anti-air guns in deck mounts, 1930 Model
     10 x Single mounts on sides, evenly spread
      6 raised mounts
      32 - 1.18" / 30.0 mm 50.0 cal guns - 0.86lbs / 0.39kg shells, 1,500 per gun
     Anti-air guns in deck and hoist mounts, 1930 Model
     16 x Twin mounts on sides, evenly spread
      Weight of broadside 17,313 lbs / 7,853 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   14.5" / 370 mm   554.46 ft / 169.00 m   16.40 ft / 5.00 m
   Ends:   3.15" / 80 mm   298.52 ft / 90.99 m   11.48 ft / 3.50 m
     Main Belt covers 100 % of normal length
     Main Belt inclined -10.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.22" / 31 mm   554.46 ft / 169.00 m   28.28 ft / 8.62 m
   Beam between torpedo bulkheads 95.14 ft / 29.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.7" / 400 mm   9.84" / 250 mm      14.2" / 360 mm
   2nd:   3.15" / 80 mm   1.97" / 50 mm      2.76" / 70 mm
   3rd:   0.79" / 20 mm         -               -
   4th:   0.79" / 20 mm         -         0.79" / 20 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 5.91" / 150 mm
   Forecastle: 1.57" / 40 mm  Quarter deck: 3.15" / 80 mm

   - Conning towers: Forward 5.91" / 150 mm, Aft 5.91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 168,927 shp / 126,019 Kw = 30.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 5,563 tons

Complement:
   1,706 - 2,219

Cost:
   £16.565 million / $66.261 million

Distribution of weights at normal displacement:
   Armament: 3,512 tons, 6.8 %
      - Guns: 3,512 tons, 6.8 %
   Armour: 18,160 tons, 35.3 %
      - Belts: 6,065 tons, 11.8 %
      - Torpedo bulkhead: 708 tons, 1.4 %
      - Armament: 3,889 tons, 7.6 %
      - Armour Deck: 7,147 tons, 13.9 %
      - Conning Towers: 352 tons, 0.7 %
   Machinery: 5,119 tons, 10.0 %
   Hull, fittings & equipment: 18,465 tons, 35.9 %
   Fuel, ammunition & stores: 5,281 tons, 10.3 %
   Miscellaneous weights: 885 tons, 1.7 %
      - Hull below water: 100 tons
      - Hull above water: 375 tons
      - On freeboard deck: 110 tons
      - Above deck: 300 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     80,702 lbs / 36,606 Kg = 41.3 x 15.7 " / 400 mm shells or 12.8 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 8.0 ft / 2.4 m
   Roll period: 18.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.46
   Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.560 / 0.565
   Length to Beam Ratio: 7.03 : 1
   'Natural speed' for length: 29.21 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: 6.56 ft / 2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  26.25 ft / 8.00 m,  22.97 ft / 7.00 m
      - Forward deck:   30.00 %,  22.97 ft / 7.00 m,  22.97 ft / 7.00 m
      - Aft deck:   35.00 %,  22.97 ft / 7.00 m,  19.69 ft / 6.00 m
      - Quarter deck:   15.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Average freeboard:      22.16 ft / 6.76 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 80.3 %
      - Above water (accommodation/working, high = better): 179.9 %
   Waterplane Area: 72,947 Square feet or 6,777 Square metres
   Displacement factor (Displacement / loading): 115 %
   Structure weight / hull surface area: 210 lbs/sq ft or 1,025 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.00
      - Longitudinal: 1.00
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform


100t - DC Pumps and Equipment

100t - Additional DC Equipment
100t - Flag Accommodations

110t - 4 x Armed Floatplane and 2 x Catapult Aft

25t - LR Radio
10t - Additional SR Radio
50t - NF Devices x 2
350t - FC 1918
40t - Flag Bridge

Forecastle and Quarterdecks Monolithic.  Main deck 120mm with a 30mm Splinter Deck
Belt is 385mm in upper half, tapering in lower half to 325mm on bottom edge.

[TacCovert4]

And sorry about the ship spam....I got inspired, and had the time for once to put hours into just designing.

[The Rock Doctor]

No need to apologize, ships are why we're here.

[TacCovert4]

No need to apologize, ships are why we're here.

No worries.  I look forward to having them picked apart and all of their flaws noted.

[TacCovert4]

Looking at Rocky's 'rapid build carrier', I fiddled one up that meets my standards.  It's not a gunfighter, and doesn't have any armor to speak of.  But 30kts, 20 aircraft, 3 HY Completion Time......and under 150m length so she can be built in any of my DD-CL docks instead of in my capital ship docks.

Escort Carrier, Aztec Escort Carrier laid down 1931

Displacement:
   7,938 t light; 8,255 t standard; 9,285 t normal; 10,108 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (490.94 ft / 479.00 ft) x 57.22 ft x (22.80 / 24.35 ft)
   (149.64 m / 146.00 m) x 17.44 m  x (6.95 / 7.42 m)

Armament:
      8 - 3.54" / 90.0 mm 55.0 cal guns - 24.01lbs / 10.89kg shells, 400 per gun
     Dual purpose guns in deck mounts, 1931 Model
     2 x Twin mounts on sides, forward deck aft
      2 raised mounts
     2 x Twin mounts on sides, forward deck aft
      2 double raised mounts
      16 - 1.57" / 40.0 mm 55.0 cal guns - 2.11lbs / 0.96kg shells, 4,000 per gun
     Anti-air guns in deck and hoist mounts, 1931 Model
     4 x 4 row quad mounts on side ends, evenly spread
      20 - 1.18" / 30.0 mm 50.0 cal guns - 0.87lbs / 0.40kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1931 Model
     20 x Single mounts on sides, evenly spread
      Weight of broadside 243 lbs / 110 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.18" / 30 mm   0.98" / 25 mm            -
   2nd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 70,548 shp / 52,629 Kw = 30.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 1,853 tons

Complement:
   472 - 614

Cost:
   £2.580 million / $10.322 million

Distribution of weights at normal displacement:
   Armament: 60 tons, 0.6 %
      - Guns: 60 tons, 0.6 %
   Armour: 47 tons, 0.5 %
      - Armament: 47 tons, 0.5 %
   Machinery: 2,110 tons, 22.7 %
   Hull, fittings & equipment: 3,746 tons, 40.3 %
   Fuel, ammunition & stores: 1,347 tons, 14.5 %
   Miscellaneous weights: 1,976 tons, 21.3 %
      - Hull below water: 950 tons
      - Hull above water: 950 tons
      - On freeboard deck: 10 tons
      - Above deck: 66 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     14,457 lbs / 6,557 Kg = 649.9 x 3.5 " / 90 mm shells or 1.5 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 2.9 ft / 0.9 m
   Roll period: 14.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.10
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.520 / 0.530
   Length to Beam Ratio: 8.37 : 1
   'Natural speed' for length: 21.89 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Forward deck:   30.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Aft deck:   35.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Quarter deck:   15.00 %,  32.81 ft / 10.00 m,  32.81 ft / 10.00 m
      - Average freeboard:      32.81 ft / 10.00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 99.5 %
      - Above water (accommodation/working, high = better): 246.3 %
   Waterplane Area: 18,600 Square feet or 1,728 Square metres
   Displacement factor (Displacement / loading): 145 %
   Structure weight / hull surface area: 80 lbs/sq ft or 392 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.78
      - Longitudinal: 9.39
      - Overall: 1.00
   Adequate 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

6t - 1918 FC
25t - NF Devices
25t - LR Radio
10t - Additional SR Radio

10t - 2 x Foredeck Catapult

1900t - 20 x Aircraft (1933 Tech Compatible)

[Jefgte]

Looking at Rocky's 'rapid build carrier', I fiddled one up that meets my standards.  It's not a gunfighter, and doesn't have any armor to speak of.  But 30kts, 20 aircraft, 3 HY Completion Time......and under 150m length so she can be built in any of my DD-CL docks instead of in my capital ship docks.

These small aircraft carriers are an interesting solution because they multiply the number of flat decks and only require a few BP.

[TacCovert4]

Looking at Rocky's 'rapid build carrier', I fiddled one up that meets my standards.  It's not a gunfighter, and doesn't have any armor to speak of.  But 30kts, 20 aircraft, 3 HY Completion Time......and under 150m length so she can be built in any of my DD-CL docks instead of in my capital ship docks.

These small aircraft carriers are an interesting solution because they multiply the number of flat decks and only require a few BP.

They are interesting.   Mostly for the speed of construction.   The problem is doctrine,  and the question is whether to just spend the extra hy to build a somewhat larger carrier with double the flight group.