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Thursday, March 2nd 2006, 10:53am

1930 - Greek Destroyer

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


HoOmAn

Keeper of the Sacred Block Coefficient

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2

Thursday, March 2nd 2006, 10:56am

Why a single 3" gun and isn´t the range a tid bit short - even for the Med?

3

Thursday, March 2nd 2006, 11:01am

I'll think about the range but it hasn't been a big requirement of mine.

AA need only scare off the plane but I still have 45tons misc for 'growth'.

Cheers,