Here's another DD design from me. Smaller than the one I had before at < 1500t standard
I'm not sure whether to use 4 x 125mm or 6 x 100mm, and whether the relatively large torpedo arsenal is a good
idea.
Enter ship name, Siamese Destroyer laid down 1938
Displacement:
1,383 t light; 1,462 t standard; 1,598 t normal; 1,707 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(372.37 ft / 360.89 ft) x 32.81 ft x (11.81 / 12.32 ft)
(113.50 m / 110.00 m) x 10.00 m x (3.60 / 3.75 m)
Armament:
4 - 4.92" / 125 mm 50.0 cal guns - 55.12lbs / 25.00kg shells, 250 per gun
Dual purpose guns in deck and hoist mounts, 1938 Model
1 x Twin mount on centreline, forward deck forward
1 x Twin mount on centreline, aft deck aft
4 - 2.17" / 55.0 mm 55.0 cal guns - 5.51lbs / 2.50kg shells, 1,000 per gun
Anti-air guns in deck mounts, 1938 Model
1 x Twin mount on centreline, forward deck centre
1 raised mount
1 x Twin mount on centreline, aft deck centre
1 raised mount
8 - 0.98" / 25.0 mm 75.0 cal guns - 0.55lbs / 0.25kg shells, 1,500 per gun
Anti-air guns in deck mounts, 1938 Model
4 x Twin mounts on sides, evenly spread
4 raised mounts
Weight of broadside 247 lbs / 112 kg
Main Torpedoes
8 - 23.6" / 600 mm, 29.53 ft / 9.00 m torpedoes - 2.402 t each, 19.214 t total
In 2 sets of deck mounted centre rotating tubes
Mines
40 - 440.92 lbs / 200.00 kg mines - 7.874 t total
in Above water - Stern racks/rails
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.39" / 10 mm 0.39" / 10 mm
2nd: 0.79" / 20 mm - -
3rd: 0.39" / 10 mm - -
- Conning towers: Forward 0.79" / 20 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 34,378 shp / 25,646 Kw = 34.00 kts
Range 3,000nm at 15.00 kts
Bunker at max displacement = 246 tons
Complement:
126 - 164
Cost:
£1.036 million / $4.145 million
Distribution of weights at normal displacement:
Armament: 119 tons, 7.4%
- Guns: 71 tons, 4.4%
- Weapons: 48 tons, 3.0%
Armour: 11 tons, 0.7%
- Armament: 9 tons, 0.6%
- Conning Tower: 2 tons, 0.1%
Machinery: 761 tons, 47.6%
Hull, fittings & equipment: 477 tons, 29.8%
Fuel, ammunition & stores: 215 tons, 13.5%
Miscellaneous weights: 15 tons, 0.9%
- On freeboard deck: 5 tons
- Above deck: 10 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
489 lbs / 222 Kg = 8.2 x 4.9 " / 125 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 1.4 ft / 0.4 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.41
Seaboat quality (Average = 1.00): 1.06
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and large transom stern
Block coefficient (normal/deep): 0.400 / 0.410
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 21.80 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00%, 24.61 ft / 7.50 m, 17.72 ft / 5.40 m
- Forward deck: 20.00%, 17.72 ft / 5.40 m, 17.72 ft / 5.40 m
- Aft deck: 45.00%, 11.81 ft / 3.60 m, 11.81 ft / 3.60 m
- Quarter deck: 15.00%, 11.81 ft / 3.60 m, 11.81 ft / 3.60 m
- Average freeboard: 14.72 ft / 4.49 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 171.9%
- Above water (accommodation/working, high = better): 113.9%
Waterplane Area: 7,564 Square feet or 703 Square metres
Displacement factor (Displacement / loading): 73%
Structure weight / hull surface area: 34 lbs/sq ft or 166 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.93
- Overall: 0.57
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room