The GB/CL/1927 design

This is sort of a heftier version of the Italian light cruisers. The maximum speed is 34.5 knots and the range is 8,000nm at 15 knots. The armour basis is still 4in. The armament is 9-6in QF in triple turrets, 8-4.7in AA, 28-2pdr AA guns, and 16-21in TT. This is the Springsharp report:

GB/CL/1927, Great Britain Light Cruiser laid down 1927

Displacement:
 11,268 t light; 11,657 t standard; 12,900 t normal; 13,895 t full load

Dimensions: Length overall / water x beam x draught
 616.42 ft / 615.00 ft x 59.00 ft x 23.00 ft (normal load)
 187.88 m / 187.45 m x 17.98 m  x 7.01 m

Armament:
      9 - 6.00" / 152 mm guns (3x3 guns), 108.00lbs / 48.99kg shells, 1927 Model
   Quick firing guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      8 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1927 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
      28 - 1.57" / 40.0 mm guns (7x4 guns), 1.95lbs / 0.89kg shells, 1927 Model
   Anti-aircraft guns in deck mounts 
   on side ends, majority aft, 3 raised mounts - superfiring
 Weight of broadside 1,442 lbs / 654 kg
 Shells per gun, main battery: 150
 16 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 550.00 ft / 167.64 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 138 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 133,899 shp / 99,889 Kw = 34.50 kts
 Range 8,000nm at 15.00 kts
 Bunker at max displacement = 2,238 tons

Complement:
 604 - 786

Cost:
 £4.136 million / $16.546 million

Distribution of weights at normal displacement:
 Armament: 180 tons, 1.4 %
 Armour: 2,319 tons, 18.0 %
    - Belts: 1,047 tons, 8.1 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 295 tons, 2.3 %
    - Armour Deck: 929 tons, 7.2 %
    - Conning Tower: 47 tons, 0.4 %
 Machinery: 4,227 tons, 32.8 %
 Hull, fittings & equipment: 4,543 tons, 35.2 %
 Fuel, ammunition & stores: 1,632 tons, 12.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   11,498 lbs / 5,215 Kg = 106.5 x 6.0 " / 152 mm shells or 1.3 torpedoes
 Stability (Unstable if below 1.00): 1.23
 Metacentric height 3.3 ft / 1.0 m
 Roll period: 13.6 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.38
 Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.541
 Length to Beam Ratio: 10.42 : 1
 'Natural speed' for length: 24.80 kts
 Power going to wave formation at top speed: 60 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  27.00 ft / 8.23 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
    - Quarterdeck (15 %): 16.00 ft / 4.88 m
    - Stern:  16.00 ft / 4.88 m
    - Average freeboard: 21.60 ft / 6.58 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 117.3 %
  - Above water (accommodation/working, high = better): 120.1 %
 Waterplane Area: 25,111 Square feet or 2,333 Square metres
 Displacement factor (Displacement / loading): 106 %
 Structure weight / hull surface area: 104 lbs/sq ft or 507 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.56
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent