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Wednesday, September 22nd 2004, 1:28pm

1921 Destroyer (Greece)

Greece went through three types of DD from 1912 -

A RN M Type - the Kikládhes (Cyclades Is.) Class

A RN S Type in 1918 - Ionian Is. Class

A RN V&W type in 1920 to serve as Leaders - Kanaris Class (ex Medusa)

The V&W type was developed into the following;



DD1921 - Doxa Class, GREEK Destroyer laid down 1921

Displacement:
1,345 t light; 1,396 t standard; 1,447 t normal; 1,482 t full load
Loading submergence 168 tons/feet

Dimensions:
320.00 ft x 31.00 ft x 11.10 ft (normal load)
97.54 m x 9.45 m x 3.38 m

Armament:
4 - 5.00" / 127 mm guns
1 - 3.00" / 76 mm guns
4 - 0.50" / 13 mm AA guns
Weight of broadside 264 lbs / 120 kg
6 - 21.0" / 533.4 mm above water torpedoes

Armour:
Belt 1.00" / 25 mm, ends unarmoured
Belts cover 80 % of normal area
Main belt does not fully protect magazines and engineering spaces
Main gun shields 0.70" / 18 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 43,457 shp / 32,419 Kw = 34.00 kts
Range 1,300nm at 14.00 kts

Complement:
117 - 152

Cost:
£0.487 million / $1.947 million

Distribution of weights at normal displacement:
Armament: 33 tons, 2.3 %
Armour: 50 tons, 3.5 %
Belts: 45 tons, 3.1 %, Armament: 5 tons, 0.3 %, Armour Deck: 0 tons, 0.0 %
Conning Tower: 0 tons, 0.0 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 832 tons, 57.5 %
Hull, fittings & equipment: 430 tons, 29.7 %
Fuel, ammunition & stores: 102 tons, 7.1 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 1.1

Remarks:
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage & compartmentation is extremely poor
Room for accommodation & workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.16
Shellfire needed to sink: 306 lbs / 139 Kg = 4.9 x 5.0 " / 127 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.2
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 70 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.40
Relative quality as seaboat: 1.00

Hull form characteristics:
Block coefficient: 0.460
Sharpness coefficient: 0.31
Hull speed coefficient 'M': 8.65
'Natural speed' for length: 17.89 kts
Power going to wave formation at top speed: 71 %
Trim: 70
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 202.7 %
Relative accommodation and working space: 89.6 %
(Average = 100%)
Displacement factor: 44 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.50
(Structure weight / hull surface area: 36 lbs / square foot or 176 Kg / square metre)
Relative longitudinal hull strength: 1.64
(for 16.00 ft / 4.88 m average freeboard, freeboard adjustment 5.71 ft)
Relative composite hull strength: 0.56

2

Wednesday, September 22nd 2004, 9:45pm

Very nice!

Except...the picture shows 12 machine guns, while the SS sheet indicates 4?

3

Thursday, September 23rd 2004, 12:46am

Quoted

Except...the picture shows 12 machine guns, while the SS sheet indicates 4?

Yes, very odd. You even missed the few that are visible on the side view and not on the top view on the forward superstructure. So that would be 14 or even 16.