How's this? A coastal escort, minded with mainly AAW in mind, although this ship has a sizable ASW capacity.
AAW/ASW, Latvia AAW/ASW ship laid down 1909 (Engine 193
Displacement:
410 t light; 431 t standard; 457 t normal; 479 t full load
Dimensions: Length overall / water x beam x draught
230.00 ft / 230.00 ft x 23.20 ft x 10.00 ft (normal load)
70.10 m / 70.10 m x 7.07 m x 3.05 m
Armament:
4 - 2.56" / 65.0 mm guns (2x2 guns), 8.39lbs / 3.81kg shells, 1939 Model
Dual purpose guns in deck mounts
on centreline ends, evenly spread
4 - 2.56" / 65.0 mm guns in single mounts, 8.39lbs / 3.81kg shells, 1939 Model
Dual purpose guns in deck mounts
on side, evenly spread
4 - 0.91" / 23.1 mm guns in single mounts, 0.38lbs / 0.17kg shells, 1939 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 69 lbs / 31 kg
Shells per gun, main battery: 250
3 - 21.0" / 533.4 mm above water torpedoes
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 12,874 shp / 9,604 Kw = 29.78 kts
Range 1,500nm at 14.00 kts
Bunker at max displacement = 48 tons
Complement:
49 - 64
Cost:
£0.052 million / $0.207 million
Distribution of weights at normal displacement:
Armament: 9 tons, 1.9 %
Machinery: 216 tons, 47.2 %
Hull, fittings & equipment: 161 tons, 35.1 %
Fuel, ammunition & stores: 47 tons, 10.3 %
Miscellaneous weights: 25 tons, 5.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
155 lbs / 70 Kg = 18.4 x 2.6 " / 65 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 0.9 ft / 0.3 m
Roll period: 10.5 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.17
Seaboat quality (Average = 1.00): 1.06
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.300
Length to Beam Ratio: 9.91 : 1
'Natural speed' for length: 15.17 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16.68 ft / 5.08 m
- Forecastle (20 %): 10.00 ft / 3.05 m
- Mid (50 %): 10.00 ft / 3.05 m (9.50 ft / 2.90 m aft of break)
- Quarterdeck (15 %): 9.00 ft / 2.74 m
- Stern: 9.00 ft / 2.74 m
- Average freeboard: 10.12 ft / 3.09 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 174.0 %
- Above water (accommodation/working, high = better): 78.4 %
Waterplane Area: 3,429 Square feet or 319 Square metres
Displacement factor (Displacement / loading): 57 %
Structure weight / hull surface area: 24 lbs/sq ft or 117 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 3.05
- Overall: 0.60
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
6 tons-3 torpedoes
15 tons-50 depth charges