I wanted a 35-knot British light cruiser for 1923

What I thought should be possible was a 35-knot British light cruiser to be laid down in 1923. If such a ship is possible, it seems that it would not be very capable, except for the speed. I settled for a 34-knot design that resembles the Aoba class, but is too large. I had to inflate the dimensions and displacement to achieve anything remotely satisfactory. This is the Springsharp report for this disappointing design (disappointing to me):

GB/CL/1923, Great Britain Light Cruiser laid down 1923

Displacement:
 11,257 t light; 11,664 t standard; 12,550 t normal; 13,259 t full load

Dimensions: Length overall / water x beam x draught
 619.03 ft / 615.00 ft x 60.00 ft x 20.00 ft (normal load)
 188.68 m / 187.45 m x 18.29 m  x 6.10 m

Armament:
      6 - 8.00" / 203 mm guns (3x2 guns), 256.00lbs / 116.12kg shells, 1923 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      4 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1923 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships
      24 - 1.57" / 40.0 mm guns (6x4 guns), 2.00lbs / 0.91kg shells, 1923 Model
   Breech loading guns in deck mounts 
   on side, evenly spread
 Weight of broadside 1,792 lbs / 813 kg
 Shells per gun, main battery: 150
 4 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 3.00" / 76 mm 540.00 ft / 164.59 m 15.00 ft / 4.57 m
 Ends: Unarmoured
   Main Belt covers 135 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 3.00" / 76 mm 2.00" / 51 mm  3.00" / 76 mm
 3rd: 1.00" / 25 mm       -         -

   - Armour deck: 1.50" / 38 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 127,794 shp / 95,334 Kw = 34.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 1,595 tons

Complement:
 592 - 770

Cost:
 £3.433 million / $13.731 million

Distribution of weights at normal displacement:
 Armament: 224 tons, 1.8 %
 Armour: 2,044 tons, 16.3 %
    - Belts: 970 tons, 7.7 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 258 tons, 2.1 %
    - Armour Deck: 746 tons, 5.9 %
    - Conning Tower: 70 tons, 0.6 %
 Machinery: 4,271 tons, 34.0 %
 Hull, fittings & equipment: 4,719 tons, 37.6 %
 Fuel, ammunition & stores: 1,293 tons, 10.3 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   10,618 lbs / 4,816 Kg = 41.5 x 8.0 " / 203 mm shells or 1.2 torpedoes
 Stability (Unstable if below 1.00): 1.24
 Metacentric height 3.4 ft / 1.0 m
 Roll period: 13.6 seconds
 Steadiness - As gun platform (Average = 50 %): 55 %
   - Recoil effect (Restricted arc if above 1.00): 0.44
 Seaboat quality  (Average = 1.00): 1.09

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.595
 Length to Beam Ratio: 10.25 : 1
 'Natural speed' for length: 24.80 kts
 Power going to wave formation at top speed: 61 %
 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 %): 22.00 ft / 6.71 m
    - Mid (67 %):  22.00 ft / 6.71 m
    - Quarterdeck (15 %): 22.00 ft / 6.71 m
    - Stern:  22.00 ft / 6.71 m
    - Average freeboard: 22.56 ft / 6.88 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 124.2 %
  - Above water (accommodation/working, high = better): 176.0 %
 Waterplane Area: 26,867 Square feet or 2,496 Square metres
 Displacement factor (Displacement / loading): 101 %
 Structure weight / hull surface area: 105 lbs/sq ft or 511 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.57
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent