RHN D-38 Kolokotronis Class, Greek Destroyer laid down 1930
Displacement:
1,380 t light; 1,427 t standard; 1,476 t normal; 1,515 t full load
Dimensions: Length overall / water x beam x draught
341.16 ft / 320.00 ft x 31.50 ft x 12.50 ft (normal load)
103.99 m / 97.54 m x 9.60 m x 3.81 m
Armament:
4 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1930 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
1 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1930 Model
Anti-aircraft gun in deck mount
on centreline amidships
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1930 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 264 lbs / 120 kg
Shells per gun, main battery: 120
8 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.00" / 25 mm 300.00 ft / 91.44 m 3.00 ft / 0.91 m
Ends: Unarmoured
Main Belt covers 144 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.70" / 18 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 35,200 shp / 26,259 Kw = 34.00 kts
Range 1,300nm at 14.00 kts (Bunkerage = 87 tons)
Complement:
118 - 154
Cost:
£0.750 million / $3.001 million
Distribution of weights at normal displacement:
Armament: 33 tons, 2.2 %
Armour: 43 tons, 2.9 %
- Belts: 35 tons, 2.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 8 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 739 tons, 50.1 %
Hull, fittings & equipment: 520 tons, 35.2 %
Fuel, ammunition & stores: 96 tons, 6.5 %
Miscellaneous weights: 45 tons, 3.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
424 lbs / 192 Kg = 6.8 x 5.0 " / 127 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 1.2 ft / 0.4 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 47 %
- Recoil effect (Restricted arc if above 1.00): 0.66
Seaboat quality (Average = 1.00): 0.92
Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.410
Length to Beam Ratio: 10.16 : 1
'Natural speed' for length: 20.63 kts
Power going to wave formation at top speed: 70 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 15.00 ft / 4.57 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.00 ft / 7.01 m
- Forecastle (15 %): 21.50 ft / 6.55 m
- Mid (36 %): 21.00 ft / 6.40 m (13.00 ft / 3.96 m aft of break)
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 11.00 ft / 3.35 m
- Average freeboard: 15.63 ft / 4.76 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 181.6 %
- Above water (accommodation/working, high = better): 71.7 %
Waterplane Area: 6,479 Square feet or 602 Square metres
Displacement factor (Displacement / loading): 59 %
Structure weight / hull surface area: 36 lbs/sq ft or 176 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 3.32
- Overall: 0.60
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather