To be laid down Q1 1925.
Following extensive trials with the Hybrid carrier the RHN has identified it's carrier requirements. The CT allows 30k tons of carriers. This is to be divided into two ships. The requirement for two ships is so that there
is the expectation that at least one will be available at all times.
The carrier must have good torpedo defence in what is potentially a high risk area in the eastern med with large numbers of hostile torpedo craft.
15k tons was insufficient to allow an adequate anti surface armament. The best that could be hoped for was a dual anti-MTB and anti-air fast firing light guns. As such these ships would not be able to operate
independently as the big US carriers could.
The original proposal included two flyoff decks however the lower one was given up in the interest of increased hangar length and a raised forecastle to improve seaworthiness.
The landing deck is canted aft so there is an uphill run for aircraft landing that will aid in arresting aircraft. Palisades are fitted to catch wayward aircraft from running over the side.
The design has a single hangar deck. A second one was proposed for the two flight deck design however stability in the event of a torp hit was an
issue. The single hangar has significantly reduced aircraft storage but as a compromise it is hoped that there is sufficient height in the single hangar to allow slinging spare aircraft from the ceiling. The maximum
is 42 aircraft however the operational maximum and hangar floor capacity is about 30 aircraft.
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CV1925, GREEK Carrier laid down 1925
Displacement:
14,663 t light; 15,002 t standard; 16,550 t normal; 17,722 t full load
Loading submergence 816 tons/feet
Dimensions:
664.00 ft x 76.80 ft x 27.00 ft (normal load)
202.39 m x 23.41 m x 8.23 m
Armament:
24 - 2.00" / 51 mm guns8 - 0.50" / 13 mm AA guns
Weight of broadside 97 lbs / 44 kg
Armour:
Belt 4.50" / 114 mm, ends unarmoured
Belts cover 120 % of normal area
Armour deck 2.50" / 64 mm, Torpedo bulkhead 1.00" / 25 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 83,875 shp / 62,571 Kw = 30.00 kts
Range 8,500nm at 15.00 kts
Complement:
729 - 948
Cost:
£2.961 million / $11.842 million
Distribution of weights at normal displacement:
Armament: 12 tons, 0.1 %
Armour: 2,771 tons, 16.7 %
Belts: 1,020 tons, 6.2 %, Armament: 0 tons, 0.0 %, Armour Deck: 1,320 tons, 8.0 %
Conning Tower: 0 tons, 0.0 %, Torpedo bulkhead: 431 tons, 2.6 %
Machinery: 2,723 tons, 16.5 %
Hull, fittings & equipment: 4,757 tons, 28.7 %
Fuel, ammunition & stores: 1,887 tons, 11.4 %
Miscellaneous weights: 4,400 tons, 26.6 %
Metacentric height 3.7
Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 12,527 lbs / 5,682 Kg = 116.0 x 6 " / 152 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 2.0
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 71 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.01
Relative quality as seaboat: 1.31
Hull form characteristics:
Block coefficient: 0.421
Sharpness coefficient: 0.32
Hull speed coefficient 'M': 7.97
'Natural speed' for length: 25.77 kts
Power going to wave formation at top speed: 49 %
Trim: 54
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 112.9 %
Relative accommodation and working space: 134.3 %
(Average = 100%)
Displacement factor: 130 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.99
(Structure weight / hull surface area: 102 lbs / square foot or 498 Kg / square metre)
Relative longitudinal hull strength: 1.12
(for 18.00 ft / 5.49 m average freeboard, freeboard adjustment 1.25 ft)
Relative composite hull strength: 1.00
Cheers,