I think you really need more training with SpringSharp. Your ships still feature incredibly if not entirely unrealistic high l:b ratios (even though 11,7:1 is allowed by our Gentlemen´s Rules). However, you do not even get the benefits from your design practice.
To give you an example that you really don´t need such high l:b ratios I have added an example below: a category b destroyer design build for the RSAN. On a similar displacement this DD is far superior to your own design - and has a l:b ratio of less than 10:1.
Kymothoe , laid down 1927
Displacement:
1.613 t light; 1.678 t standard (1.600 t officially); 1.910 t normal; 2.096 t full load
Dimensions: Length overall / water x beam x draught
373,55 ft / 359,25 ft x 36,09 ft x 13,22 ft (normal load)
113,86 m / 109,50 m x 11,00 m x 4,03 m
Armament:
5 - 5,00" / 127 mm guns in single mounts, 62,50lbs / 28,35kg shells, 1927 Model
Breech loading guns in deck mounts
on centreline ends, majority forward, 2 raised mounts - superfiring
4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,88kg shells, 1927 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0,79" / 20,0 mm guns (2x2 guns), 0,24lbs / 0,11kg shells, 1927 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 321 lbs / 146 kg
Shells per gun, main battery: 150
6 - 21,0" / 533 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,79" / 20 mm 0,39" / 10 mm -
2nd: 0,59" / 15 mm - -
3rd: 0,39" / 10 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 43.325 shp / 32.321 Kw = 35,00 kts
Range 5.000nm at 15,00 kts
Bunker at max displacement = 418 tons
Complement:
143 - 187
Cost:
£0,847 million / $3,390 million
Distribution of weights at normal displacement:
Armament: 40 tons, 2,1%
Armour: 11 tons, 0,6%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 11 tons, 0,6%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 1.021 tons, 53,4%
Hull, fittings & equipment: 541 tons, 28,3%
Fuel, ammunition & stores: 298 tons, 15,6%
Miscellaneous weights: 0 tons, 0,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
489 lbs / 222 Kg = 7,8 x 5,0 " / 127 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,42
Metacentric height 2,0 ft / 0,6 m
Roll period: 10,7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,21
Seaboat quality (Average = 1.00): 1,00
Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0,390
Length to Beam Ratio: 9,95 : 1
'Natural speed' for length: 21,97 kts
Power going to wave formation at top speed: 68 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 30,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24,77 ft / 7,55 m
- Forecastle (30%): 18,54 ft / 5,65 m
- Mid (50%): 18,54 ft / 5,65 m (10,76 ft / 3,28 m aft of break)
- Quarterdeck (15%): 10,76 ft / 3,28 m
- Stern: 10,76 ft / 3,28 m
- Average freeboard: 15,40 ft / 4,69 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 188,5%
- Above water (accommodation/working, high = better): 101,6%
Waterplane Area: 8.238 Square feet or 765 Square metres
Displacement factor (Displacement / loading): 62%
Structure weight / hull surface area: 34 lbs/sq ft or 166 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 2,00
- Overall: 0,57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform