There is something really wrong with how Springsharp dealt with this design: GB/PG/1906

My friend Cliff had a design for a fast gunboat that was essentially a purely gun-armed destroyer. The first ships were to be built in series to the GB/PG/1906 design. The speed was high, being 36 knots. That seems to have really bothered Springsharp, as I had to do bad things to get it to work. When you consider that the British S-class ships could reach 40 knots on trial in 1917, you have to think that this ship could have been able to make 36 knots with less trouble:

GB/PG/1906, Great Britain Destroyer laid down 1906 (Engine 1927)

Displacement:
 1,282 t light; 1,318 t standard; 1,376 t normal; 1,423 t full load

Dimensions: Length overall / water x beam x draught
 275.77 ft / 275.00 ft x 28.00 ft x 16.00 ft (normal load)
 84.05 m / 83.82 m x 8.53 m  x 4.88 m

Armament:
      3 - 3.46" / 88.0 mm guns in single mounts, 20.79lbs / 9.43kg shells, 1906 Model
   Quick firing guns in deck mounts with hoists
   on centreline ends, majority forward, all raised mounts - superfiring
 Weight of broadside 62 lbs / 28 kg
 Shells per gun, main battery: 250

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 2 shafts, 57,928 shp / 43,215 Kw = 36.00 kts
 Range 3,200nm at 10.00 kts
 Bunker at max displacement = 105 tons

Complement:
 112 - 146

Cost:
 £0.176 million / $0.704 million

Distribution of weights at normal displacement:
 Armament: 8 tons, 0.6 %
 Machinery: 890 tons, 64.6 %
 Hull, fittings & equipment: 385 tons, 27.9 %
 Fuel, ammunition & stores: 94 tons, 6.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   213 lbs / 97 Kg = 10.2 x 3.5 " / 88 mm shells or 0.2 torpedoes
 Stability (Unstable if below 1.00): 1.37
 Metacentric height 1.3 ft / 0.4 m
 Roll period: 10.4 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.22
 Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.391
 Length to Beam Ratio: 9.82 : 1
 'Natural speed' for length: 16.58 kts
 Power going to wave formation at top speed: 75 %
 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:  22.00 ft / 6.71 m
    - Forecastle (33 %): 21.00 ft / 6.40 m
    - Mid (33 %):  21.00 ft / 6.40 m (14.00 ft / 4.27 m aft of break)
    - Quarterdeck (15 %): 14.00 ft / 4.27 m
    - Stern:  14.00 ft / 4.27 m
    - Average freeboard: 16.44 ft / 5.01 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 212.9 %
  - Above water (accommodation/working, high = better): 112.3 %
 Waterplane Area: 4,717 Square feet or 438 Square metres
 Displacement factor (Displacement / loading): 37 %
 Structure weight / hull surface area: 28 lbs/sq ft or 135 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.38
  - Longitudinal: 6.11
  - Overall: 0.51
 Hull space for machinery, storage, compartmentation is extremely poor
 Room for accommodation and workspaces is adequate