A very fast British super-destroyer: GB/DL/1921

I wanted to have a very fast British super-destroyer to work with the very fast heavy and light cruisers. I suspect that this ship is much larger than it should be, due to limitations with the current Springsharp 3.0b2 Beta. My ship has 6-5.1in QF guns in turrets, with one forward and two aft. There are also 2-4in AA and 8-2pdr AA guns, with 6-21in TT. The top speed is 37 knots and I made the ship large and long enough so that the design works well. This is the Springsharp report:

GB/DL/1921 very fast, Great Britain Destroyer Leader laid down 1921 (Engine 1950)

Displacement:
 2,176 t light; 2,276 t standard; 2,464 t normal; 2,614 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (411.65 ft / 408.00 ft) x 37.00 ft x (14.00 / 14.54 ft)
 (125.47 m / 124.36 m) x 11.28 m  x (4.27 / 4.43 m)

Armament:
      6 - 5.10" / 130 mm 55.0 cal guns - 72.00lbs / 32.66kg shells, 150 per gun
   Quick firing guns in turret on barbette mounts, 1921 Model
   3 x Twin mounts on centreline ends, majority aft
  1 raised mount aft - superfiring
      2 - 4.00" / 102 mm 45.0 cal guns - 32.00lbs / 14.51kg shells, 150 per gun
   Anti-air guns in deck and hoist mount, 1921 Model
   1 x Single mount on centreline, aft deck forward
      8 - 1.57" / 40.0 mm 45.0 cal guns - 2.00lbs / 0.91kg shells, 150 per gun
   Anti-air guns in deck mounts, 1921 Model
   2 x 2 row quad mounts on sides, forward deck aft
      Weight of broadside 512 lbs / 232 kg
      6 - 21.0" / 533 mm, 22.00 ft / 6.71 m torpedoes - 1.425 t each, 8.551 t total
 In 2 sets of deck mounted carriage/fixed tubes

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

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 2 shafts, 60,696 shp / 45,280 Kw = 37.00 kts
 Range 4,200nm at 14.00 kts
 Bunker at max displacement = 337 tons

Complement:
 174 - 227

Cost:
 £0.771 million / $3.083 million

Distribution of weights at normal displacement:
 Armament: 152 tons, 6.2 %
    - Guns: 143 tons, 5.8 %
    - Torpedoes: 9 tons, 0.3 %
 Armour: 78 tons, 3.2 %
    - Armament: 78 tons, 3.2 %
 Machinery: 1,211 tons, 49.1 %
 Hull, fittings & equipment: 736 tons, 29.9 %
 Fuel, ammunition & stores: 288 tons, 11.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   590 lbs / 267 Kg = 8.9 x 5.1 " / 130 mm shells or 0.3 torpedoes
 Stability (Unstable if below 1.00): 1.09
 Metacentric height 1.3 ft / 0.4 m
 Roll period: 13.5 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.83
 Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
 Hull has rise forward of midbreak,
   a normal bow and large transom stern
 Block coefficient (normal/deep): 0.408 / 0.417
 Length to Beam Ratio: 11.03 : 1
 'Natural speed' for length: 23.15 kts
 Power going to wave formation at top speed: 67 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 8.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 18.00 %,  26.00 ft / 7.92 m,  24.00 ft / 7.32 m
    - Forward deck: 16.00 %,  24.00 ft / 7.32 m,  23.00 ft / 7.01 m
    - Aft deck: 51.00 %,  15.00 ft / 4.57 m,  15.00 ft / 4.57 m
    - Quarter deck: 15.00 %,  15.00 ft / 4.57 m,  15.00 ft / 4.57 m
    - Average freeboard:  18.12 ft / 5.52 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 179.6 %
  - Above water (accommodation/working, high = better): 176.4 %
 Waterplane Area: 9,691 Square feet or 900 Square metres
 Displacement factor (Displacement / loading): 70 %
 Structure weight / hull surface area: 38 lbs/sq ft or 187 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.43
  - Longitudinal: 2.20
  - Overall: 0.51
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent