The US/CL/1933 design

The US/CL/1933 design has two improvements: 1.1in AA guns and 3.5 inch deck armour. To satisfy Springsharp, the belt is abnormally long. The armament is now 12-6in QF, 8-5in AA, and 36-1.1in AA guns. To improve performance, the hull now has a transom stern. The size has ballooned to 16,100 tons normal displacement. This is the Springsharp report:

US/CL/1933, United States Light Cruiser laid down 1933 (Engine 1950)

Displacement:
 14,228 t light; 14,712 t standard; 16,100 t normal; 17,210 t full load

Dimensions: Length overall / water x beam x draught
 669.71 ft / 665.00 ft x 63.00 ft x 24.00 ft (normal load)
 204.13 m / 202.69 m x 19.20 m  x 7.32 m

Armament:
      12 - 6.00" / 152 mm guns (4x3 guns), 108.00lbs / 48.99kg shells, 1933 Model
   Quick firing guns in turrets (on barbettes)
   on centreline ends, evenly spread, 1 raised mount - superfiring
      8 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1933 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships
      36 - 1.10" / 27.9 mm guns (9x4 guns), 0.67lbs / 0.30kg shells, 1933 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread, 6 raised mounts
 Weight of broadside 1,820 lbs / 826 kg
 Shells per gun, main battery: 150
 12 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 620.00 ft / 188.98 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 143 % of normal length

   - Torpedo Bulkhead:
  1.00" / 25 mm 620.00 ft / 188.98 m 24.00 ft / 7.32 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 2.00" / 51 mm  4.00" / 102 mm

   - Armour deck: 3.50" / 89 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 154,625 shp / 115,350 Kw = 36.00 kts
 Range 10,000nm at 15.00 kts
 Bunker at max displacement = 2,498 tons

Complement:
 714 - 929

Cost:
 £5.706 million / $22.823 million

Distribution of weights at normal displacement:
 Armament: 227 tons, 1.4 %
 Armour: 4,548 tons, 28.2 %
    - Belts: 1,563 tons, 9.7 %
    - Torpedo bulkhead: 551 tons, 3.4 %
    - Armament: 389 tons, 2.4 %
    - Armour Deck: 1,991 tons, 12.4 %
    - Conning Tower: 55 tons, 0.3 %
 Machinery: 3,699 tons, 23.0 %
 Hull, fittings & equipment: 5,754 tons, 35.7 %
 Fuel, ammunition & stores: 1,872 tons, 11.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   23,274 lbs / 10,557 Kg = 215.5 x 6.0 " / 152 mm shells or 2.9 torpedoes
 Stability (Unstable if below 1.00): 1.17
 Metacentric height 3.3 ft / 1.0 m
 Roll period: 14.5 seconds
 Steadiness - As gun platform (Average = 50 %): 57 %
   - Recoil effect (Restricted arc if above 1.00): 0.42
 Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
 Hull has a flush deck
   and transom stern
 Block coefficient: 0.560
 Length to Beam Ratio: 10.56 : 1
 'Natural speed' for length: 29.12 kts
 Power going to wave formation at top speed: 61 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 5.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  31.00 ft / 9.45 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m
    - Quarterdeck (15 %): 24.00 ft / 7.32 m
    - Stern:  24.00 ft / 7.32 m
    - Average freeboard: 24.56 ft / 7.49 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 126.2 %
  - Above water (accommodation/working, high = better): 158.0 %
 Waterplane Area: 30,746 Square feet or 2,856 Square metres
 Displacement factor (Displacement / loading): 117 %
 Structure weight / hull surface area: 108 lbs/sq ft or 526 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.72
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent