The Ger/DD/1905 design in Springsharp 3.0b2 Beta

I have really struggled to get the Ger/DD/1905 design to work in Springsharp 3.0b2. To achieve adequate seakeeping, the displacement had to be reduced considerably. Because of that, hull strength became an issue. This is a 32 knot ship with 2-4in QF guns and 2-18in TT. The ship has three funnels and a raised forecastle. This is a photograph of a Ger/DD/1905 destroyer:

This is the Springsharp report:

Ger/DD/1905, Germany Destroyer laid down 1905 (Engine 1950)

Displacement:
 702 t light; 726 t standard; 832 t normal; 916 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (272.31 ft / 270.00 ft) x 28.00 ft x (10.00 / 10.64 ft)
 (83.00 m / 82.30 m) x 8.53 m  x (3.05 / 3.24 m)

Armament:
      2 - 4.00" / 102 mm 50.0 cal guns - 32.00lbs / 14.51kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts, 1905 Model
   2 x Single mounts on centreline ends, evenly spread
      Weight of broadside 64 lbs / 29 kg
      2 - 18.0" / 457 mm, 20.00 ft / 6.10 m torpedoes - 0.865 t each, 1.729 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, 
 Direct drive, 2 shafts, 24,938 shp / 18,604 Kw = 32.00 kts
 Range 3,600nm at 16.00 kts
 Bunker at max displacement = 190 tons

Complement:
 76 - 100

Cost:
 £0.090 million / $0.361 million

Distribution of weights at normal displacement:
 Armament: 23 tons, 2.7 %
    - Guns: 21 tons, 2.5 %
    - Torpedoes: 2 tons, 0.2 %
 Armour: 14 tons, 1.7 %
    - Armament: 14 tons, 1.7 %
 Machinery: 417 tons, 50.2 %
 Hull, fittings & equipment: 248 tons, 29.9 %
 Fuel, ammunition & stores: 129 tons, 15.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   254 lbs / 115 Kg = 7.9 x 4.0 " / 102 mm shells or 0.2 torpedoes
 Stability (Unstable if below 1.00): 1.28
 Metacentric height 1.2 ft / 0.4 m
 Roll period: 10.9 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.20
 Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
 Hull has rise forward of midbreak,
   a normal bow and a round stern
 Block coefficient (normal/deep): 0.385 / 0.399
 Length to Beam Ratio: 9.64 : 1
 'Natural speed' for length: 16.43 kts
 Power going to wave formation at top speed: 70 %
 Trim (Max stability = 0, Max steadiness = 100): 53
 Bow angle (Positive = bow angles forward): 6.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 15.00 %,  22.00 ft / 6.71 m,  19.50 ft / 5.94 m
    - Forward deck: 15.00 %,  19.50 ft / 5.94 m,  19.00 ft / 5.79 m
    - Aft deck: 55.00 %,  11.00 ft / 3.35 m,  11.00 ft / 3.35 m
    - Quarter deck: 15.00 %,  11.00 ft / 3.35 m,  11.00 ft / 3.35 m
    - Average freeboard:  13.66 ft / 4.16 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 170.1 %
  - Above water (accommodation/working, high = better): 145.5 %
 Waterplane Area: 4,607 Square feet or 428 Square metres
 Displacement factor (Displacement / loading): 65 %
 Structure weight / hull surface area: 25 lbs/sq ft or 124 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.43
  - Longitudinal: 3.01
  - Overall: 0.52
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent