The F/CL/1918 design

The F/CL/1918 design is a transitional ship, in that it has twin mounts, but not turrets. The main armament is now 8-155mm (6.1in) QF guns. The armament is unchanged, otherwise, but the maximum speed is now 33.5 knots. I looked at what a torpedo bulkhead would do for the defensive strength, but the effect is neglible, so I deferred adding the bulkhead until a later date in the series. This is the Springsharp report:

F/CL/1918, France Light Cruiser laid down 1918 (Engine 1922)

Displacement:
 9,410 t light; 9,693 t standard; 10,500 t normal; 11,146 t full load

Dimensions: Length overall / water x beam x draught
 579.03 ft / 575.00 ft x 55.00 ft x 18.00 ft (normal load)
 176.49 m / 175.26 m x 16.76 m  x 5.49 m

Armament:
      8 - 6.10" / 155 mm guns (4x2 guns), 113.62lbs / 51.54kg shells, 1918 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, 1918 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, 1918 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 380.00 ft / 115.82 m 12.00 ft / 3.66 m
 Ends: 2.00" / 51 mm 132.00 ft / 40.23 m 8.00 ft / 2.44 m
   63.00 ft / 19.20 m Unarmoured ends
   Main Belt covers 102 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - 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, 113,475 shp / 84,653 Kw = 33.50 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 1,453 tons

Complement:
 518 - 674

Cost:
 £1.957 million / $7.827 million

Distribution of weights at normal displacement:
 Armament: 131 tons, 1.2 %
 Armour: 1,657 tons, 15.8 %
    - Belts: 647 tons, 6.2 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 87 tons, 0.8 %
    - Armour Deck: 893 tons, 8.5 %
    - Conning Tower: 31 tons, 0.3 %
 Machinery: 3,849 tons, 36.7 %
 Hull, fittings & equipment: 3,772 tons, 35.9 %
 Fuel, ammunition & stores: 1,090 tons, 10.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   8,750 lbs / 3,969 Kg = 77.0 x 6.1 " / 155 mm shells or 1.1 torpedoes
 Stability (Unstable if below 1.00): 1.29
 Metacentric height 3.2 ft / 1.0 m
 Roll period: 12.9 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.37
 Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.646
 Length to Beam Ratio: 10.45 : 1
 'Natural speed' for length: 23.98 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): 128.4 %
  - Above water (accommodation/working, high = better): 166.4 %
 Waterplane Area: 24,129 Square feet or 2,242 Square metres
 Displacement factor (Displacement / loading): 101 %
 Structure weight / hull surface area: 92 lbs/sq ft or 449 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.62
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent