I tried to reproduce the British Abdiel class minelayer in Springsharp

I have long liked the British fast minelayers of the Abdiel class. I thought that I would try to reproduce that design in Springsharp. The ship is 415ft x 40ft x 14.5ft and is 2,650 tons standard. The designed speed is 39.75 knots at 72,000 SHP. The armament is 6-4in and 4-2pdr guns. The ship is intended to carry as many as 150 mines. With Springsharp, using the lightest machinery possible, I was only able to achieve 36 knots, without making any radical changes:

Abdiel class, Great Britain Cruiser Minelayer laid down 1939 (Engine 1950)

Displacement:
 2,591 t light; 2,667 t standard; 2,950 t normal; 3,176 t full load

Dimensions: Length overall / water x beam x draught
 416.10 ft / 415.00 ft x 40.00 ft x 14.00 ft (normal load)
 126.83 m / 126.49 m x 12.19 m  x 4.27 m

Armament:
      6 - 4.00" / 102 mm guns (3x2 guns), 32.00lbs / 14.51kg shells, 1939 Model
   Dual purpose guns in deck mounts with hoists
   on centreline ends, majority forward, 1 raised mount - superfiring
      4 - 1.57" / 40.0 mm guns (1x4 guns), 2.00lbs / 0.91kg shells, 1939 Model
   Quick firing guns in deck mount 
   on centreline aft, all raised guns - superfiring
 Weight of broadside 200 lbs / 91 kg
 Shells per gun, main battery: 150

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 2 shafts, 73,894 shp / 55,125 Kw = 36.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 509 tons

Complement:
 199 - 260

Cost:
 £1.936 million / $7.744 million

Distribution of weights at normal displacement:
 Armament: 25 tons, 0.8 %
 Machinery: 1,579 tons, 53.5 %
 Hull, fittings & equipment: 837 tons, 28.4 %
 Fuel, ammunition & stores: 359 tons, 12.2 %
 Miscellaneous weights: 150 tons, 5.1 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   796 lbs / 361 Kg = 24.9 x 4.0 " / 102 mm shells or 0.4 torpedoes
 Stability (Unstable if below 1.00): 1.36
 Metacentric height 2.2 ft / 0.7 m
 Roll period: 11.4 seconds
 Steadiness - As gun platform (Average = 50 %): 60 %
   - Recoil effect (Restricted arc if above 1.00): 0.22
 Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.444
 Length to Beam Ratio: 10.38 : 1
 'Natural speed' for length: 20.37 kts
 Power going to wave formation at top speed: 68 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  21.00 ft / 6.40 m
    - Forecastle (20 %): 19.00 ft / 5.79 m
    - Mid (50 %):  19.00 ft / 5.79 m
    - Quarterdeck (15 %): 19.00 ft / 5.79 m
    - Stern:  19.00 ft / 5.79 m
    - Average freeboard: 19.16 ft / 5.84 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 184.7 %
  - Above water (accommodation/working, high = better): 191.7 %
 Waterplane Area: 10,540 Square feet or 979 Square metres
 Displacement factor (Displacement / loading): 76 %
 Structure weight / hull surface area: 37 lbs/sq ft or 181 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.46
  - Longitudinal: 2.33
  - Overall: 0.54
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent