The F/CL/1921 design

The F/CL/1921 design is has just two improvements. One is a 34 knot speed and the other is the 1in torpedo bulkhead. The belt is also longer, due to the increased lenght and the larger power plant. This is the Springsharp report:

F/CL/1921, France Light Cruiser laid down 1921 (Engine 1925)

Displacement:
 10,185 t light; 10,484 t standard; 11,300 t normal; 11,953 t full load

Dimensions: Length overall / water x beam x draught
 599.03 ft / 595.00 ft x 57.00 ft x 19.00 ft (normal load)
 182.58 m / 181.36 m x 17.37 m  x 5.79 m

Armament:
      8 - 6.10" / 155 mm guns (4x2 guns), 113.62lbs / 51.54kg shells, 1921 Model
   Quick firing guns in deck mounts with hoists
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1921 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread, all raised mounts
      16 - 1.85" / 47.0 mm guns (8x2 guns), 3.17lbs / 1.44kg shells, 1921 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
 Weight of broadside 1,049 lbs / 476 kg
 Shells per gun, main battery: 120
 6 - 21.7" / 549.9999 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 3.00" / 76 mm 420.00 ft / 128.02 m 12.00 ft / 3.66 m
 Ends: 2.00" / 51 mm 132.00 ft / 40.23 m 8.00 ft / 2.44 m
   43.00 ft / 13.11 m Unarmoured ends
   Main Belt covers 109 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 420.00 ft / 128.02 m 18.00 ft / 5.49 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 3.00" / 76 mm 2.00" / 51 mm  3.00" / 76 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 3.00" / 76 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 2 shafts, 122,357 shp / 91,278 Kw = 34.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 1,468 tons

Complement:
 547 - 712

Cost:
 £2.603 million / $10.413 million

Distribution of weights at normal displacement:
 Armament: 131 tons, 1.2 %
 Armour: 2,029 tons, 18.0 %
    - Belts: 700 tons, 6.2 %
    - Torpedo bulkhead: 280 tons, 2.5 %
    - Armament: 87 tons, 0.8 %
    - Armour Deck: 930 tons, 8.2 %
    - Conning Tower: 33 tons, 0.3 %
 Machinery: 3,973 tons, 35.2 %
 Hull, fittings & equipment: 4,052 tons, 35.9 %
 Fuel, ammunition & stores: 1,115 tons, 9.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   10,196 lbs / 4,625 Kg = 89.7 x 6.1 " / 155 mm shells or 1.4 torpedoes
 Stability (Unstable if below 1.00): 1.31
 Metacentric height 3.5 ft / 1.1 m
 Roll period: 12.8 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.31
 Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.614
 Length to Beam Ratio: 10.44 : 1
 'Natural speed' for length: 24.39 kts
 Power going to wave formation at top speed: 62 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  29.00 ft / 8.84 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: 21.76 ft / 6.63 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 189.4 %
  - Above water (accommodation/working, high = better): 165.9 %
 Waterplane Area: 25,125 Square feet or 2,334 Square metres
 Displacement factor (Displacement / loading): 103 %
 Structure weight / hull surface area: 96 lbs/sq ft or 467 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.49
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent