Aztec Ship Designs 1929-1934

[TacCovert4]

D)  Do I increase the ship's size to about 21200 tons, which is ~3550 tons per HY for 6HY, take the 6 months more of build time and potentially take this ship up to 12 x 240mm guns?

2 set of 2T3x240 allows you to engage 2 targets at the same time.

A 6HY ship:

Princess Royal, Aztec Razee laid down 1931

Displacement:
   21,116 t light; 22,244 t standard; 24,167 t normal; 25,706 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (759.51 ft / 754.59 ft) x 88.58 ft x (22.97 / 24.12 ft)
   (231.50 m / 230.00 m) x 27.00 m  x (7.00 / 7.35 m)

Armament:
      12 - 9.45" / 240 mm 50.0 cal guns - 446.53lbs / 202.54kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1931 Model
     4 x 3-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      16 - 4.72" / 120 mm 50.0 cal guns - 55.82lbs / 25.32kg shells, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     8 x Twin mounts on sides, 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, 1931 Model
     4 x 4 row quad mounts on sides, evenly spread
      4 raised mounts
      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
     10 x Single mounts on sides, evenly spread
      Weight of broadside 6,303 lbs / 2,859 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   6.69" / 170 mm   490.49 ft / 149.50 m   13.12 ft / 4.00 m
   Ends:   2.95" / 75 mm   264.07 ft / 80.49 m   13.12 ft / 4.00 m
     Main Belt covers 100 % of normal length
     Main Belt inclined -15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.57" / 40 mm   490.49 ft / 149.50 m   21.10 ft / 6.43 m
   Beam between torpedo bulkheads 68.90 ft / 21.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.87" / 200 mm   3.94" / 100 mm      6.69" / 170 mm
   2nd:   2.76" / 70 mm   1.57" / 40 mm      2.76" / 70 mm
   3rd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm
   4th:   0.79" / 20 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3.35" / 85 mm
   Forecastle: 1.06" / 27 mm  Quarter deck: 1.26" / 32 mm

   - Conning towers: Forward 4.53" / 115 mm, Aft 4.53" / 115 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 108,060 shp / 80,613 Kw = 30.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 3,461 tons

Complement:
   968 - 1,259

Cost:
   £8.073 million / $32.290 million

Distribution of weights at normal displacement:
   Armament: 1,907 tons, 7.9 %
      - Guns: 1,907 tons, 7.9 %
   Armour: 6,727 tons, 27.8 %
      - Belts: 2,182 tons, 9.0 %
      - Torpedo bulkhead: 603 tons, 2.5 %
      - Armament: 1,218 tons, 5.0 %
      - Armour Deck: 2,561 tons, 10.6 %
      - Conning Towers: 163 tons, 0.7 %
   Machinery: 3,231 tons, 13.4 %
   Hull, fittings & equipment: 8,834 tons, 36.6 %
   Fuel, ammunition & stores: 3,051 tons, 12.6 %
   Miscellaneous weights: 416 tons, 1.7 %
      - Hull above water: 96 tons
      - On freeboard deck: 100 tons
      - Above deck: 220 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     38,811 lbs / 17,604 Kg = 92.0 x 9.4 " / 240 mm shells or 6.0 torpedoes
   Stability (Unstable if below 1.00): 1.11
   Metacentric height 5.1 ft / 1.5 m
   Roll period: 16.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.49
   Seaboat quality  (Average = 1.00): 1.14

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.551 / 0.558
   Length to Beam Ratio: 8.52 : 1
   'Natural speed' for length: 27.47 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 61
   Bow angle (Positive = bow angles forward): 10.00 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 %,  27.89 ft / 8.50 m,  24.61 ft / 7.50 m
      - Forward deck:   30.00 %,  24.61 ft / 7.50 m,  19.69 ft / 6.00 m
      - Aft deck:   35.00 %,  19.69 ft / 6.00 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:      21.67 ft / 6.60 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 90.2 %
      - Above water (accommodation/working, high = better): 191.3 %
   Waterplane Area: 46,693 Square feet or 4,338 Square metres
   Displacement factor (Displacement / loading): 122 %
   Structure weight / hull surface area: 153 lbs/sq ft or 747 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.02
      - Longitudinal: 0.99
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

25t - LR Radio
50t - NF Devices x 2
191t - 1918 FC
50t - Squadron Flagship Facilities
40t - 2x5x21in HW TT on sides Aft
60t - 2 x Catapult and Armed Floatplane

[TacCovert4]

Alternately, this is more like the original Uhlan's protection scheme:

Uhlan, Aztec Razee laid down 1931

Displacement:
   17,663 t light; 18,475 t standard; 20,174 t normal; 21,533 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (655.84 ft / 650.92 ft) x 85.30 ft x (22.31 / 23.51 ft)
   (199.90 m / 198.40 m) x 26.00 m  x (6.80 / 7.17 m)

Armament:
      9 - 9.45" / 240 mm 50.0 cal guns - 446.53lbs / 202.54kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1931 Model
     3 x 3-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
      14 - 4.72" / 120 mm 55.0 cal guns - 56.91lbs / 25.81kg shells, 200 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     6 x Twin mounts on sides, evenly spread
     1 x Twin mount on centreline, aft deck centre
      1 raised mount
      8 - 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
     2 x 4 row quad mounts on centreline, evenly spread
      2 double raised mounts
      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 Twin mounts on sides, evenly spread
      Weight of broadside 4,850 lbs / 2,200 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   6.89" / 175 mm   423.10 ft / 128.96 m   13.12 ft / 4.00 m
   Ends:   3.15" / 80 mm   227.79 ft / 69.43 m   11.48 ft / 3.50 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.57" / 40 mm   423.10 ft / 128.96 m   20.73 ft / 6.32 m
   Beam between torpedo bulkheads 72.18 ft / 22.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.87" / 200 mm   4.33" / 110 mm      6.89" / 175 mm
   2nd:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   3rd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm
   4th:   0.79" / 20 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 3.54" / 90 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.57" / 40 mm

   - Conning towers: Forward 4.33" / 110 mm, Aft 4.33" / 110 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 104,392 shp / 77,876 Kw = 30.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 3,059 tons

Complement:
   846 - 1,100

Cost:
   £6.852 million / $27.406 million

Distribution of weights at normal displacement:
   Armament: 1,480 tons, 7.3 %
      - Guns: 1,480 tons, 7.3 %
   Armour: 5,836 tons, 28.9 %
      - Belts: 1,931 tons, 9.6 %
      - Torpedo bulkhead: 511 tons, 2.5 %
      - Armament: 929 tons, 4.6 %
      - Armour Deck: 2,327 tons, 11.5 %
      - Conning Towers: 138 tons, 0.7 %
   Machinery: 3,122 tons, 15.5 %
   Hull, fittings & equipment: 6,928 tons, 34.3 %
   Fuel, ammunition & stores: 2,511 tons, 12.4 %
   Miscellaneous weights: 297 tons, 1.5 %
      - Hull above water: 72 tons
      - On freeboard deck: 100 tons
      - Above deck: 125 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     30,782 lbs / 13,963 Kg = 73.0 x 9.4 " / 240 mm shells or 4.9 torpedoes
   Stability (Unstable if below 1.00): 1.11
   Metacentric height 4.8 ft / 1.5 m
   Roll period: 16.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.43
   Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.570 / 0.577
   Length to Beam Ratio: 7.63 : 1
   'Natural speed' for length: 25.51 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 68
   Bow angle (Positive = bow angles forward): 10.00 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 %,  27.89 ft / 8.50 m,  24.61 ft / 7.50 m
      - Forward deck:   30.00 %,  24.61 ft / 7.50 m,  19.69 ft / 6.00 m
      - Aft deck:   35.00 %,  19.69 ft / 6.00 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:      21.67 ft / 6.60 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 88.3 %
      - Above water (accommodation/working, high = better): 185.1 %
   Waterplane Area: 39,484 Square feet or 3,668 Square metres
   Displacement factor (Displacement / loading): 117 %
   Structure weight / hull surface area: 141 lbs/sq ft or 687 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.24
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

25t - LR Radio
25t - NF Devices (1918)
147t - 1918 FC
40t - 2 x 5 x 21in HW TT on sides
60t - 2 x Armed Floatplane and 2 x Catapult

[TacCovert4]

Continuing to work on designs for cruisers, and needing a general purpose corvette to handle most jobs in lieu of the big frigates or Razees, this has come up:

Shark, Aztec Corvette laid down 1931

Displacement:
   7,584 t light; 7,973 t standard; 8,997 t normal; 9,817 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (563.90 ft / 557.74 ft) x 59.06 ft x (18.18 / 19.45 ft)
   (171.88 m / 170.00 m) x 18.00 m  x (5.54 / 5.93 m)

Armament:
      6 - 7.09" / 180 mm 50.0 cal guns - 188.38lbs / 85.45kg shells, 150 per gun
     Quick firing guns in deck and hoist mounts, 1931 Model
     3 x Twin mounts on centreline ends, majority forward
      1 raised mount - superfiring
      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
     4 x Twin mounts on sides, evenly spread
      12 - 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
     2 x 4 row quad mounts on sides, forward deck aft
     1 x 4 row quad mount on centreline, aft deck centre
      1 raised mount
      16 - 1.18" / 30.0 mm 50.0 cal guns - 0.87lbs / 0.40kg shells, 2,000 per gun
     Anti-air guns in deck mounts, 1931 Model
     16 x Single mounts on side ends, evenly spread
      Weight of broadside 1,362 lbs / 618 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.57" / 40 mm   390.42 ft / 119.00 m   9.84 ft / 3.00 m
   Ends:   Unarmoured
     Main Belt covers 108 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   3.94" / 100 mm   1.97" / 50 mm      3.94" / 100 mm
   2nd:   1.97" / 50 mm   1.18" / 30 mm            -
   3rd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm

   - Box over machinery & magazines:
   2.76" / 70 mm

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 82,984 shp / 61,906 Kw = 32.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 1,844 tons

Complement:
   461 - 600

Cost:
   £3.262 million / $13.048 million

Distribution of weights at normal displacement:
   Armament: 320 tons, 3.6 %
      - Guns: 320 tons, 3.6 %
   Armour: 1,697 tons, 18.9 %
      - Belts: 247 tons, 2.7 %
      - Armament: 114 tons, 1.3 %
      - Armour Deck: 1,299 tons, 14.4 %
      - Conning Tower: 37 tons, 0.4 %
   Machinery: 2,482 tons, 27.6 %
   Hull, fittings & equipment: 2,890 tons, 32.1 %
   Fuel, ammunition & stores: 1,413 tons, 15.7 %
   Miscellaneous weights: 197 tons, 2.2 %
      - Hull above water: 46 tons
      - On freeboard deck: 85 tons
      - Above deck: 66 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     9,011 lbs / 4,087 Kg = 50.6 x 7.1 " / 180 mm shells or 1.4 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 2.8 ft / 0.9 m
   Roll period: 14.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.39
   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): 0.526 / 0.536
   Length to Beam Ratio: 9.44 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 68
   Bow angle (Positive = bow angles forward): 15.00 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 %,  22.97 ft / 7.00 m,  21.33 ft / 6.50 m
      - Forward deck:   30.00 %,  21.33 ft / 6.50 m,  18.04 ft / 5.50 m
      - Aft deck:   40.00 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Quarter deck:   10.00 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Average freeboard:      19.32 ft / 5.89 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 105.3 %
      - Above water (accommodation/working, high = better): 174.1 %
   Waterplane Area: 22,477 Square feet or 2,088 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 87 lbs/sq ft or 424 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 1.22
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

40t - 2 x 5 x 21in HW TT on Sides Aft
32t - 1918 FC
25t - LR Radio
25t - NF Devices
30t - 1 x Armed Floatplane and Catapult Amidships betwixt funnels
45t - Additional Powered T&E for Main Battery

[TacCovert4]

And something smaller, lighter, and admittedly less protected.....but capable of bringing 8 x 180mm guns to bear in the Caribbean....cheaply


Town-Class, Aztec Corvette laid down 1931

Displacement:
   5,792 t light; 6,127 t standard; 6,653 t normal; 7,074 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (488.44 ft / 482.28 ft) x 59.06 ft x (15.55 / 16.31 ft)
   (148.88 m / 147.00 m) x 18.00 m  x (4.74 / 4.97 m)

Armament:
      8 - 7.09" / 180 mm 50.0 cal guns - 188.38lbs / 85.45kg shells, 160 per gun
     Quick firing guns in deck and hoist mounts, 1931 Model
     4 x Twin mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      8 - 3.54" / 90.0 mm 55.0 cal guns - 24.01lbs / 10.89kg shells, 400 per gun
     Quick firing guns in deck mounts, 1931 Model
     4 x Twin mounts on sides, evenly spread
      8 - 1.57" / 40.0 mm 55.0 cal guns - 2.11lbs / 0.96kg shells, 1,000 per gun
     Anti-air guns in deck mounts, 1931 Model
     8 x Twin mounts on sides, evenly spread
      8 raised mounts
      16 - 1.18" / 30.0 mm 50.0 cal guns - 0.87lbs / 0.40kg shells, 2,000 per gun
     Anti-air guns in deck mounts, 1931 Model
     16 x Single mounts on side ends, evenly spread
      Weight of broadside 1,730 lbs / 785 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   3.15" / 80 mm   1.97" / 50 mm      3.15" / 80 mm
   2nd:   1.97" / 50 mm         -               -

   - Box over machinery & magazines:
   3.15" / 80 mm

   - Conning towers: Forward 3.15" / 80 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 50,355 shp / 37,565 Kw = 29.00 kts
   Range 6,000nm at 14.00 kts
   Bunker at max displacement = 947 tons

Complement:
   367 - 478

Cost:
   £2.553 million / $10.211 million

Distribution of weights at normal displacement:
   Armament: 398 tons, 6.0 %
      - Guns: 398 tons, 6.0 %
   Armour: 1,198 tons, 18.0 %
      - Armament: 102 tons, 1.5 %
      - Armour Deck: 1,073 tons, 16.1 %
      - Conning Tower: 24 tons, 0.4 %
   Machinery: 1,506 tons, 22.6 %
   Hull, fittings & equipment: 2,500 tons, 37.6 %
   Fuel, ammunition & stores: 861 tons, 12.9 %
   Miscellaneous weights: 189 tons, 2.8 %
      - Hull above water: 60 tons
      - On freeboard deck: 60 tons
      - Above deck: 69 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,484 lbs / 3,848 Kg = 47.7 x 7.1 " / 180 mm shells or 1.4 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 2.8 ft / 0.9 m
   Roll period: 14.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.64
   Seaboat quality  (Average = 1.00): 1.15

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.526 / 0.533
   Length to Beam Ratio: 8.17 : 1
   'Natural speed' for length: 21.96 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 61
   Bow angle (Positive = bow angles forward): 15.00 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 %,  22.97 ft / 7.00 m,  21.33 ft / 6.50 m
      - Forward deck:   30.00 %,  21.33 ft / 6.50 m,  19.69 ft / 6.00 m
      - Aft deck:   38.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Quarter deck:   14.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Average freeboard:      20.34 ft / 6.20 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 99.4 %
      - Above water (accommodation/working, high = better): 202.2 %
   Waterplane Area: 19,431 Square feet or 1,805 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 90 lbs/sq ft or 437 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.83
      - Longitudinal: 1.78
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

25t - LR Radio
25t - NF Devices
39t - 1918 FC
40t - 2 x 5 x 21in HW TT on sides aft
60t - Electric T&E for Main Battery

[The Rock Doctor]

It's a lot of firepower for its size, but the speed would concern me.  But you probably figured that already.

[Jefgte]

A compact and powerful vessel with reduced displacement => Excellent

;)

[TacCovert4]

It's a lot of firepower for its size, but the speed would concern me.  But you probably figured that already.

Speed is a little low.  But there's a lot of the fleet with speeds down there, so as a screen/escort vessel it has utility.  I've trended towards 29-31kt cruisers anyway, the tonnage being burned to get 32kts is killing everything else.

[TacCovert4]

And a quick note.  The Constellation-class Carriers, laid down in 1929, will have their mid-construction automatic refit in early 1931 before they complete in the yards......pulling the deck-mounted 130mm LA-QF guns and 70mm AA guns in favor of deck-mounted 90mm DP guns and 40mm AA guns (not rotary, single guns).  This installation is non-invasive and meets the rules for a mid-construction modification.

Constellation, Aztec Aircraft Carrier laid down 1929

Displacement:
   22,767 t light; 23,373 t standard; 25,368 t normal; 26,964 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (762.51 ft / 754.59 ft) x 82.02 ft x (26.08 / 27.38 ft)
   (232.41 m / 230.00 m) x 25.00 m  x (7.95 / 8.34 m)

Armament:
      16 - 3.54" / 90.0 mm 55.0 cal guns - 24.01lbs / 10.89kg shells, 340 per gun
     Dual purpose guns in deck mounts, 1929 Model
     8 x Twin mounts on sides, evenly spread
      10 - 1.57" / 40.0 mm 55.0 cal guns - 2.12lbs / 0.96kg shells, 1,000 per gun
     Anti-air guns in deck mounts, 1929 Model
     10 x Single mounts on side ends, majority forward
      20 - 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, 1929 Model
     10 x Twin mounts on sides, evenly spread
      Weight of broadside 422 lbs / 192 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.15" / 80 mm   603.67 ft / 184.00 m   13.12 ft / 4.00 m
   Ends:   1.97" / 50 mm   150.89 ft / 45.99 m   11.48 ft / 3.50 m
     Main Belt covers 123 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.57" / 40 mm   603.67 ft / 184.00 m   24.08 ft / 7.34 m
   Beam between torpedo bulkheads 59.06 ft / 18.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.76" / 70 mm   1.97" / 50 mm            -
   2nd:   0.98" / 25 mm   0.98" / 25 mm            -
   3rd:   0.98" / 25 mm         -         0.98" / 25 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 2.76" / 70 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 3.15" / 80 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 140,996 shp / 105,183 Kw = 32.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 3,591 tons

Complement:
   1,004 - 1,306

Cost:
   £5.723 million / $22.891 million

Distribution of weights at normal displacement:
   Armament: 90 tons, 0.4 %
      - Guns: 90 tons, 0.4 %
   Armour: 4,307 tons, 17.0 %
      - Belts: 1,124 tons, 4.4 %
      - Torpedo bulkhead: 847 tons, 3.3 %
      - Armament: 161 tons, 0.6 %
      - Armour Deck: 2,116 tons, 8.3 %
      - Conning Tower: 59 tons, 0.2 %
   Machinery: 4,330 tons, 17.1 %
   Hull, fittings & equipment: 8,067 tons, 31.8 %
   Fuel, ammunition & stores: 2,601 tons, 10.3 %
   Miscellaneous weights: 5,973 tons, 23.5 %
      - Hull below water: 2,900 tons
      - Hull above water: 2,948 tons
      - On freeboard deck: 50 tons
      - Above deck: 75 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     43,920 lbs / 19,922 Kg = 1,974.5 x 3.5 " / 90 mm shells or 5.3 torpedoes
   Stability (Unstable if below 1.00): 1.37
   Metacentric height 6.5 ft / 2.0 m
   Roll period: 13.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.02
   Seaboat quality  (Average = 1.00): 1.80

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.550 / 0.557
   Length to Beam Ratio: 9.20 : 1
   'Natural speed' for length: 27.47 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 39
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   12.00 %,  29.53 ft / 9.00 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:   40.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Quarter deck:   8.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Average freeboard:      29.53 ft / 9.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 114.5 %
      - Above water (accommodation/working, high = better): 242.0 %
   Waterplane Area: 43,194 Square feet or 4,013 Square metres
   Displacement factor (Displacement / loading): 132 %
   Structure weight / hull surface area: 115 lbs/sq ft or 559 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.58
      - 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

13t - 1918 FC
25t - NF Devices
25t - LR Radio
10t - Additional SR Radio

5700t - 60 x Aircraft (Provision for heavier tech expansion)

50t BW - Additional Pumps
50t - On Deck Firefighting Equipment
100t AW - Hangar Firefighting Equipment

[TacCovert4]

And looking at 1932 when the Constellation and Pleides complete, the third ship in the class, tentatively named Hydra.  Notes are that the 30mm AA guns have been stripped in favor of no fewer than 6 of the 'new and hot' Rotary 40mm AA guns (that will prove to be less than the amazing shell hoses they're advertised as) and 5 twin 90mm DP guns on each 'gallery sponson'.  Some of the notable things that are coming out with Aztec carrier design are a 5 squadron airgroup, a 'clean' deck unencumbered by guns with everything above deck being on the single island (this will prove a two edged sword.....nothing on deck to interfere with flight ops, but the entire armament split between two galleries means that against low-level attacks half the AA is completely useless at a time and fore and aft coverage is not amazing).

Constellation Mk2, Aztec Aircraft Carrier laid down 1932

Displacement:
   22,661 t light; 23,428 t standard; 25,368 t normal; 26,920 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (762.51 ft / 754.59 ft) x 82.02 ft x (26.08 / 27.34 ft)
   (232.41 m / 230.00 m) x 25.00 m  x (7.95 / 8.33 m)

Armament:
      20 - 3.54" / 90.0 mm 55.0 cal guns - 24.01lbs / 10.89kg shells, 340 per gun
     Dual purpose guns in deck mounts, 1932 Model
     10 x Twin mounts on sides, evenly spread
      36 - 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
     12 x 4 row quad mounts on sides, evenly spread
      Weight of broadside 556 lbs / 252 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.15" / 80 mm   603.67 ft / 184.00 m   13.12 ft / 4.00 m
   Ends:   1.97" / 50 mm   150.89 ft / 45.99 m   11.48 ft / 3.50 m
     Main Belt covers 123 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.57" / 40 mm   603.67 ft / 184.00 m   24.08 ft / 7.34 m
   Beam between torpedo bulkheads 59.06 ft / 18.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.76" / 70 mm   1.97" / 50 mm            -
   2nd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 2.76" / 70 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 3.15" / 80 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 140,996 shp / 105,183 Kw = 32.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 3,493 tons

Complement:
   1,004 - 1,306

Cost:
   £6.437 million / $25.748 million

Distribution of weights at normal displacement:
   Armament: 130 tons, 0.5 %
      - Guns: 130 tons, 0.5 %
   Armour: 4,342 tons, 17.1 %
      - Belts: 1,124 tons, 4.4 %
      - Torpedo bulkhead: 847 tons, 3.3 %
      - Armament: 197 tons, 0.8 %
      - Armour Deck: 2,116 tons, 8.3 %
      - Conning Tower: 59 tons, 0.2 %
   Machinery: 4,162 tons, 16.4 %
   Hull, fittings & equipment: 8,054 tons, 31.8 %
   Fuel, ammunition & stores: 2,707 tons, 10.7 %
   Miscellaneous weights: 5,973 tons, 23.5 %
      - Hull below water: 2,900 tons
      - Hull above water: 2,948 tons
      - On freeboard deck: 50 tons
      - Above deck: 75 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     44,190 lbs / 20,044 Kg = 1,986.7 x 3.5 " / 90 mm shells or 5.4 torpedoes
   Stability (Unstable if below 1.00): 1.36
   Metacentric height 6.4 ft / 2.0 m
   Roll period: 13.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.04
   Seaboat quality  (Average = 1.00): 1.79

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.550 / 0.557
   Length to Beam Ratio: 9.20 : 1
   'Natural speed' for length: 27.47 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 39
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   12.00 %,  29.53 ft / 9.00 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:   40.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Quarter deck:   8.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Average freeboard:      29.53 ft / 9.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 113.0 %
      - Above water (accommodation/working, high = better): 242.0 %
   Waterplane Area: 43,194 Square feet or 4,013 Square metres
   Displacement factor (Displacement / loading): 133 %
   Structure weight / hull surface area: 115 lbs/sq ft or 560 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.57
      - 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

13t - 1918 FC
25t - NF Devices
25t - LR Radio
10t - Additional SR Radio

5700t - 60 x Aircraft (Provision for heavier tech expansion)

50t BW - Additional Pumps
50t - On Deck Firefighting Equipment
100t AW - Hangar Firefighting Equipment

[TacCovert4]

And finally, this is the 'Through-Deck Cruiser' design, the Condor Class.  Laid down in 1930 and designed originally with 100mm QF Secondaries with 200 RPG.....well before she even launches this will change to the final armament already in development of 90mm DP Secondaries, the 274 rounds per gun is the precise amount per gun to fill the same magazine space without going over.

Condor-Class, Aztec Through-Deck Cruiser laid down 1930

Displacement:
   12,500 t light; 13,003 t standard; 14,391 t normal; 15,501 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (646.33 ft / 639.76 ft) x 70.54 ft x (20.67 / 21.91 ft)
   (197.00 m / 195.00 m) x 21.50 m  x (6.30 / 6.68 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, 1930 Model
     2 x 3-gun mounts on centreline, forward evenly spread
      12 - 3.54" / 90.0 mm 55.0 cal guns - 24.01lbs / 10.89kg shells, 265 per gun
     Dual purpose guns in deck mounts, 1930 Model
     6 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, 1930 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, 1930 Model
     10 x Single mounts on sides, evenly spread
      Weight of broadside 1,453 lbs / 659 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   435.04 ft / 132.60 m   11.48 ft / 3.50 m
   Ends:   Unarmoured
     Main Belt covers 105 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.18" / 30 mm   435.04 ft / 132.60 m   18.83 ft / 5.74 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

   - Armoured deck - single deck:
   For and Aft decks: 2.17" / 55 mm

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 81,864 shp / 61,070 Kw = 30.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 2,498 tons

Complement:
   656 - 854

Cost:
   £3.871 million / $15.485 million

Distribution of weights at normal displacement:
   Armament: 428 tons, 3.0 %
      - Guns: 428 tons, 3.0 %
   Armour: 2,526 tons, 17.5 %
      - Belts: 809 tons, 5.6 %
      - Torpedo bulkhead: 358 tons, 2.5 %
      - Armament: 256 tons, 1.8 %
      - Armour Deck: 1,053 tons, 7.3 %
      - Conning Tower: 50 tons, 0.3 %
   Machinery: 2,481 tons, 17.2 %
   Hull, fittings & equipment: 5,302 tons, 36.8 %
   Fuel, ammunition & stores: 1,891 tons, 13.1 %
   Miscellaneous weights: 1,764 tons, 12.3 %
      - Hull below water: 790 tons
      - Hull above water: 790 tons
      - On freeboard deck: 40 tons
      - Above deck: 144 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     27,856 lbs / 12,635 Kg = 156.5 x 7.1 " / 180 mm shells or 3.7 torpedoes
   Stability (Unstable if below 1.00): 1.29
   Metacentric height 4.7 ft / 1.4 m
   Roll period: 13.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.24
   Seaboat quality  (Average = 1.00): 1.84

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): 38
   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): 99.1 %
      - Above water (accommodation/working, high = better): 246.5 %
   Waterplane Area: 31,201 Square feet or 2,899 Square metres
   Displacement factor (Displacement / loading): 136 %
   Structure weight / hull surface area: 107 lbs/sq ft or 522 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


AW
25t - LR Wireless
25t - NF Devices
44t - 1918 FC
50t - Command Facilities

OD
20t - 4 x Catapult (On Sides of Deck)
20t - Additional Firefighting Equipment on the Flight Deck

AW
30t - Additional Firefighting Equipment in Hangar
760t - Aviation (Total Flight Group 16 Aircraft, 1933 Tech Compatible)

BW
30t - Additional DC Equipment and Pumps
760t - Aviation Support

[The Rock Doctor]

Yeah, I've gone with the clean deck approach so far.  Not surw if that will last or not.

[TacCovert4]

And for something entirely different, another 'small ice-capable cruiser' for my more extreme-environment territories.  I've only got one ship, the Penguin, capable of operating all-weather off Terra del Fuego.  With the Toucans being scrapped, and my Salado-class not really being designed to deal with ice or other conditions down towards Antarctica, I need another small icebreaker.  Super compact, and a generally functional if light armament, this is a patrol/customs/rescue ship, not a first-line warship.

Sea Lion, Aztec Icebreaker Cruiser laid down 1930

Displacement:
   2,787 t light; 2,936 t standard; 3,236 t normal; 3,477 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (307.11 ft / 295.28 ft) x 39.37 ft x (14.76 / 15.70 ft)
   (93.61 m / 90.00 m) x 12.00 m  x (4.50 / 4.79 m)

Armament:
      4 - 4.72" / 120 mm 55.0 cal guns - 56.91lbs / 25.81kg shells, 500 per gun
     Dual purpose guns in deck and hoist mounts, 1930 Model
     2 x Single mounts on centreline ends, evenly spread
      12 - 1.57" / 40.0 mm 55.0 cal guns - 2.11lbs / 0.96kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1930 Model
     4 x Twin mounts on sides, evenly spread
      Weight of broadside 253 lbs / 115 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.97" / 50 mm   191.93 ft / 58.50 m   13.12 ft / 4.00 m
   Ends:   1.97" / 50 mm   103.31 ft / 31.49 m   13.12 ft / 4.00 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.18" / 30 mm   191.93 ft / 58.50 m   16.40 ft / 5.00 m
   Beam between torpedo bulkheads 39.37 ft / 12.00 m

   - Hull void:
      0.00" / 0 mm     0.00 ft / 0.00 m   0.00 ft / 0.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.36" / 60 mm   1.57" / 40 mm      2.36" / 60 mm
   2nd:   0.79" / 20 mm   0.79" / 20 mm            -

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

   - Conning towers: Forward 3.15" / 80 mm, Aft 0.00" / 0 mm

Machinery:
   Diesel Internal combustion motors,
   Geared drive, 2 shafts, 19,999 shp / 14,919 Kw = 24.00 kts
   Range 5,000nm at 14.00 kts
   Bunker at max displacement = 541 tons

Complement:
   213 - 278

Cost:
   £0.882 million / $3.528 million

Distribution of weights at normal displacement:
   Armament: 87 tons, 2.7 %
      - Guns: 87 tons, 2.7 %
   Armour: 750 tons, 23.2 %
      - Belts: 312 tons, 9.6 %
      - Torpedo bulkhead: 138 tons, 4.3 %
      - Armament: 40 tons, 1.2 %
      - Armour Deck: 245 tons, 7.6 %
      - Conning Tower: 15 tons, 0.5 %
   Machinery: 606 tons, 18.7 %
   Hull, fittings & equipment: 940 tons, 29.1 %
   Fuel, ammunition & stores: 450 tons, 13.9 %
   Miscellaneous weights: 404 tons, 12.5 %
      - Hull below water: 206 tons
      - Hull void weights: 10 tons
      - Hull above water: 70 tons
      - On freeboard deck: 60 tons
      - Above deck: 58 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5,075 lbs / 2,302 Kg = 96.2 x 4.7 " / 120 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.18
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 12.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - Recoil effect (Restricted arc if above 1.00): 0.24
   Seaboat quality  (Average = 1.00): 1.15

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.660 / 0.667
   Length to Beam Ratio: 7.50 : 1
   'Natural speed' for length: 17.18 kts
   Power going to wave formation at top speed: 67 %
   Trim (Max stability = 0, Max steadiness = 100): 52
   Bow angle (Positive = bow angles forward): 15.00 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 %,  19.69 ft / 6.00 m,  18.04 ft / 5.50 m
      - Forward deck:   30.00 %,  18.04 ft / 5.50 m,  16.40 ft / 5.00 m
      - Aft deck:   35.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      17.11 ft / 5.22 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 80.9 %
      - Above water (accommodation/working, high = better): 134.9 %
   Waterplane Area: 8,987 Square feet or 835 Square metres
   Displacement factor (Displacement / loading): 123 %
   Structure weight / hull surface area: 60 lbs/sq ft or 292 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.87
      - Longitudinal: 3.67
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Warning: Beam between bulkheads too wide

206t - Diesel Engines
(Range - 8750nm)

8t - 1918 FC
25t - LR Radio
25t - NF Devices

16t - 2x2x21in HW TT on Sides
4t - Additional Searchlights
40t - 2 x 10t Motor-Launch


20t - Berthing for 10 Additional Men (rescues/Seal Warriors)
30t - Enhanced Ship's Surgical Suite
20t - Additional DC/Firefighting Equipment

10t - Void - Crash Void Forward

Note:  Ship is 10% stronger than required for increased bracing beyond normal cruisers of same size

[The Rock Doctor]

I like it and endorse its construction.

[TacCovert4]

Unfortunately, I don't have the huge yards and large BP/IC counts to push a lot of classes at once.  So I'm already looking out at 1932 when the Constellations come out of the yards.  I'm considering the option of running singleton classes of Constellation-type 'Strike Carriers'......but also looking at running classes of a Martinique variant that's smaller, more rapidly produced, etc. 

For consideration, an updated Martinique.  Benefit, it can be produced in 4HY, is cheaper per HY, and therefore gives me the potential of more hulls in the water.  Downside, the air group is only 36 aircraft, which means a single Attack Squadron if I'm running a defensive fighter heavy airgroup as I expect I'll need to run.

Martinique Mk2, Aztec Aircraft Carrier laid down 1932

Displacement:
   14,812 t light; 15,300 t standard; 16,780 t normal; 17,964 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (634.11 ft / 623.36 ft) x 72.18 ft x (23.95 / 25.28 ft)
   (193.28 m / 190.00 m) x 22.00 m  x (7.30 / 7.70 m)

Armament:
      16 - 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
     8 x Twin mounts on sides, evenly spread
      24 - 1.57" / 40.0 mm 50.0 cal guns - 2.07lbs / 0.94kg shells, 2,000 per gun
     Anti-air guns in deck and hoist mounts, 1932 Model
     6 x 4 row quad mounts on sides, 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
     16 x Single mounts on side ends, evenly spread
      Weight of broadside 448 lbs / 203 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.76" / 70 mm   430.12 ft / 131.10 m   11.48 ft / 3.50 m
   Ends:   1.57" / 40 mm   193.21 ft / 58.89 m   9.84 ft / 3.00 m
     Main Belt covers 106 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.18" / 30 mm   430.12 ft / 131.10 m   21.92 ft / 6.68 m
   Beam between torpedo bulkheads 55.77 ft / 17.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.57" / 40 mm         -               -
   2nd:   0.79" / 20 mm   0.79" / 20 mm      0.79" / 20 mm

   - Armoured deck - single deck:
   For and Aft decks: 2.76" / 70 mm
   Forecastle: 1.57" / 40 mm  Quarter deck: 1.57" / 40 mm

   - Conning towers: Forward 3.15" / 80 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 91,351 shp / 68,148 Kw = 30.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 2,664 tons

Complement:
   736 - 958

Cost:
   £4.214 million / $16.855 million

Distribution of weights at normal displacement:
   Armament: 102 tons, 0.6 %
      - Guns: 102 tons, 0.6 %
   Armour: 2,687 tons, 16.0 %
      - Belts: 674 tons, 4.0 %
      - Torpedo bulkhead: 412 tons, 2.5 %
      - Armament: 56 tons, 0.3 %
      - Armour Deck: 1,501 tons, 8.9 %
      - Conning Tower: 44 tons, 0.3 %
   Machinery: 2,696 tons, 16.1 %
   Hull, fittings & equipment: 5,577 tons, 33.2 %
   Fuel, ammunition & stores: 1,968 tons, 11.7 %
   Miscellaneous weights: 3,750 tons, 22.3 %
      - Hull below water: 1,810 tons
      - Hull above water: 1,810 tons
      - On freeboard deck: 60 tons
      - Above deck: 70 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     31,675 lbs / 14,367 Kg = 1,424.0 x 3.5 " / 90 mm shells or 4.0 torpedoes
   Stability (Unstable if below 1.00): 1.34
   Metacentric height 5.2 ft / 1.6 m
   Roll period: 13.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.05
   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): 0.545 / 0.553
   Length to Beam Ratio: 8.64 : 1
   'Natural speed' for length: 24.97 kts
   Power going to wave formation at top speed: 55 %
   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 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Forward deck:   30.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Aft deck:   39.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Quarter deck:   6.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Average freeboard:      29.53 ft / 9.00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102.0 %
      - Above water (accommodation/working, high = better): 238.8 %
   Waterplane Area: 31,254 Square feet or 2,904 Square metres
   Displacement factor (Displacement / loading): 138 %
   Structure weight / hull surface area: 100 lbs/sq ft or 488 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.90
      - Longitudinal: 2.60
      - 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

3420t - 36 Aircraft (1930+)

25t - LR Radio
10t - Additional SR Radio (for air group control)
10t - 1918 FC
25t - NF Devices

10t - 2 x Catapult In Deck
50t - On Deck Firefighting Equipment
100t - In Hangar Firefighting Equipment
100t - Additional DC Pumps and Equipment

[TacCovert4]

And the Updated Constellation.  Basically 3700t for 4HY or 3780t for 6HY is the choice here.

Constellation Mk2, Aztec Aircraft Carrier laid down 1932

Displacement:
   22,660 t light; 23,428 t standard; 25,368 t normal; 26,920 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (762.51 ft / 754.59 ft) x 82.02 ft x (26.08 / 27.34 ft)
   (232.41 m / 230.00 m) x 25.00 m  x (7.95 / 8.33 m)

Armament:
      20 - 3.54" / 90.0 mm 55.0 cal guns - 24.01lbs / 10.89kg shells, 340 per gun
     Dual purpose guns in deck mounts, 1932 Model
     10 x Twin mounts on sides, evenly spread
      36 - 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
     12 x 4 row quad mounts on sides, evenly spread
      Weight of broadside 556 lbs / 252 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.15" / 80 mm   603.67 ft / 184.00 m   13.12 ft / 4.00 m
   Ends:   1.97" / 50 mm   150.89 ft / 45.99 m   9.84 ft / 3.00 m
     Main Belt covers 123 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.57" / 40 mm   603.67 ft / 184.00 m   23.95 ft / 7.30 m
   Beam between torpedo bulkheads 59.06 ft / 18.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.76" / 70 mm   1.97" / 50 mm            -
   2nd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 2.76" / 70 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.18" / 30 mm

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 140,996 shp / 105,183 Kw = 32.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 3,493 tons

Complement:
   1,004 - 1,306

Cost:
   £6.437 million / $25.747 million

Distribution of weights at normal displacement:
   Armament: 130 tons, 0.5 %
      - Guns: 130 tons, 0.5 %
   Armour: 4,300 tons, 17.0 %
      - Belts: 1,109 tons, 4.4 %
      - Torpedo bulkhead: 842 tons, 3.3 %
      - Armament: 197 tons, 0.8 %
      - Armour Deck: 2,116 tons, 8.3 %
      - Conning Tower: 37 tons, 0.1 %
   Machinery: 4,162 tons, 16.4 %
   Hull, fittings & equipment: 8,036 tons, 31.7 %
   Fuel, ammunition & stores: 2,708 tons, 10.7 %
   Miscellaneous weights: 6,033 tons, 23.8 %
      - Hull below water: 2,900 tons
      - Hull above water: 2,950 tons
      - On freeboard deck: 70 tons
      - Above deck: 113 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     44,083 lbs / 19,996 Kg = 1,981.9 x 3.5 " / 90 mm shells or 5.3 torpedoes
   Stability (Unstable if below 1.00): 1.36
   Metacentric height 6.4 ft / 1.9 m
   Roll period: 13.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.04
   Seaboat quality  (Average = 1.00): 1.79

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.550 / 0.557
   Length to Beam Ratio: 9.20 : 1
   'Natural speed' for length: 27.47 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 39
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   12.00 %,  29.53 ft / 9.00 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:   40.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Quarter deck:   8.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Average freeboard:      29.53 ft / 9.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 113.1 %
      - Above water (accommodation/working, high = better): 242.0 %
   Waterplane Area: 43,194 Square feet or 4,013 Square metres
   Displacement factor (Displacement / loading): 133 %
   Structure weight / hull surface area: 114 lbs/sq ft or 559 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.57
      - 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

13t - 1918 FC
25t - NF Devices
25t - LR Radio
10t - Additional SR Radio
40t - Expanded Bridge for Division Flagship

20t - 4 x Catapult on Deck (2 launches at a time, for rapid launching of Interceptors)

5700t - 60 x Aircraft (Provision for heavier tech expansion)

50t BW - Additional Pumps
50t - On Deck Firefighting Equipment
100t AW - Hangar Firefighting Equipment