Springsharp for small, fast combatants

I keep forgetting that you don't need to have a "composite strength", in Springsharp, of 1.0 or better for small, fast combatants. I have been wrestling with the design for a fast gunboat from 1915 that wants to have a length of 275ft, 3-5in QF guns, and a 36 knot speed. I cranked the machinery date way up to attempt to get a reasonable machinery weight, although it is still too high at 567 tons. Getting reasonable seakeeping, stability, and recoil numbers, along with adequate hull strength is a major challenge. Springsharp 3.0 is supposed to make the situation better. This is my Springsharp report. I would welcome suggestions about how to make it better. Obviously, the form is distorted by the what it took to get the right combination of hull strength and seakeeping. The draft is too great, by a good deal, for such a small ship:

GB/PG/1915, Enter country Enter ship type laid down 1915 (Engine 1945)

Displacement:
 1,203 t light; 1,245 t standard; 1,302 t normal; 1,347 t full load

Dimensions: Length overall / water x beam x draught
 275.80 ft / 275.00 ft x 29.00 ft x 16.00 ft (normal load)
 84.06 m / 83.82 m x 8.84 m  x 4.88 m

Armament:
      3 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1915 Model
   Quick firing guns in deck mounts with hoists
   on centreline ends, majority forward, all raised mounts - superfiring
 Weight of broadside 188 lbs / 85 kg
 Shells per gun, main battery: 150

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 2 shafts, 54,722 shp / 40,822 Kw = 36.00 kts
 Range 1,500nm at 15.00 kts
 Bunker at max displacement = 102 tons

Complement:
 107 - 140

Cost:
 £0.243 million / $0.974 million

Distribution of weights at normal displacement:
 Armament: 23 tons, 1.8 %
 Machinery: 754 tons, 57.9 %
 Hull, fittings & equipment: 425 tons, 32.7 %
 Fuel, ammunition & stores: 99 tons, 7.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   227 lbs / 103 Kg = 3.6 x 5.0 " / 127 mm shells or 0.2 torpedoes
 Stability (Unstable if below 1.00): 1.21
 Metacentric height 1.1 ft / 0.3 m
 Roll period: 11.6 seconds
 Steadiness - As gun platform (Average = 50 %): 50 %
   - Recoil effect (Restricted arc if above 1.00): 0.68
 Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.357
 Length to Beam Ratio: 9.48 : 1
 'Natural speed' for length: 16.58 kts
 Power going to wave formation at top speed: 74 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  23.00 ft / 7.01 m
    - Forecastle (37 %): 20.00 ft / 6.10 m
    - Mid (50 %):  20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
    - Quarterdeck (15 %): 12.00 ft / 3.66 m
    - Stern:  12.00 ft / 3.66 m
    - Average freeboard: 16.44 ft / 5.01 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 200.6 %
  - Above water (accommodation/working, high = better): 122.0 %
 Waterplane Area: 4,839 Square feet or 450 Square metres
 Displacement factor (Displacement / loading): 44 %
 Structure weight / hull surface area: 31 lbs/sq ft or 152 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.38
  - Longitudinal: 6.37
  - Overall: 0.51
 Hull space for machinery, storage, compartmentation is extremely poor
 Room for accommodation and workspaces is excellent