Frigate to be laid down in Q1 1925
New class of treaty compliant vessel. These are being rated as Frigates.
They are multi role ships. In peacetime they are to be used for training.
They are equipped to carry a seaplane but no catapult. In wartime they are suitable for escort and could be fitted for minelaying.
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Frigate, Greece, laid down 1925
Displacement:
1,917 t light; 1,987 t standard; 2,206 t normal; 2,373 t full load
Loading submergence 250 tons/feet
Dimensions:
328.00 ft x 38.00 ft x 10.50 ft (normal load)
99.97 m x 11.58 m x 3.20 m
Armament:
4 - 5.00" / 127 mm guns (4 Main turrets x 1 guns, 2 superfiring turrets)
4 - 3.00" / 76 mm guns
4 - 1.50" / 38 mm AA guns
4 - 0.50" / 13 mm guns
Weight of broadside 311 lbs / 141 kg
Armour:
Belt 2.00" / 51 mm, ends unarmoured
Belts cover 114 % of normal area
Armour deck 1.00" / 25 mm
Machinery:
Oil fired boilers, steam turbines,
No drive to shaft, 2 shafts, 14,220 shp / 10,608 Kw = 24.00 kts
Range 6,500nm at 12.00 kts
Complement:
160 - 209
Cost:
£0.538 million / $2.152 million
Distribution of weights at normal displacement:
Armament: 39 tons, 1.8 %
Armour: 312 tons, 14.1 %
Belts: 150 tons, 6.8 %, Armament: 0 tons, 0.0 %, Armour Deck: 162 tons, 7.3 %
Conning Tower: 0 tons, 0.0 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 462 tons, 20.9 %
Hull, fittings & equipment: 905 tons, 41.0 %
Fuel, ammunition & stores: 289 tons, 13.1 %
Miscellaneous weights: 200 tons, 9.1 %
Metacentric height 1.5
Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable and able to fight her guns in the heaviest weather
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.15
Shellfire needed to sink: 3,770 lbs / 1,710 Kg = 60.3 x 5.0 " / 127 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1.0
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 72 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.49
Relative quality as seaboat: 1.68
Hull form characteristics:
Block coefficient: 0.590
Sharpness coefficient: 0.38
Hull speed coefficient 'M': 7.70
'Natural speed' for length: 18.11 kts
Power going to wave formation at top speed: 59 %
Trim: 43
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 91.8 %
Relative accommodation and working space: 177.1 %
(Average = 100%)
Displacement factor: 126 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.91
(Structure weight / hull surface area: 61 lbs / square foot or 299 Kg / square metre)
Relative longitudinal hull strength: 2.35
(for 17.00 ft / 5.18 m average freeboard, freeboard adjustment 5.81 ft)
Relative composite hull strength: 1.00