Shes a modified version of the Medusa class CA's (my Hawkins clones) with lighter armament. The 25mm guns are indeed what they carry in 1920, I like to springstyle my designs to the current timeframe (except future designs of course). I really just based the design on the Medusa with new armament requirements and as much speed as i could get. Heres the follow on design with improved armor at the expense of some speed and armament.
Warrior, Atlantis cruiser laid down 1914
Displacement:
7,255 t light; 7,469 t standard; 8,257 t normal; 8,855 t full load
Loading submergence 576 tons/feet
Dimensions:
570.00 ft x 56.00 ft x 18.00 ft (normal load)
173.74 m x 17.07 m x 5.49 m
Armament:
7 - 5.50" / 140 mm guns
6 - 1.00" / 25 mm guns
Weight of broadside 585 lbs / 265 kg
4 - 21.0" / 533.4 mm above water torpedoes
Armour:
Belt 3.00" / 76 mm, end belts 1.25" / 32 mm
Belts cover 100 % of normal area
Main belt does not fully protect magazines and engineering spaces
Main gun shields 2.00" / 51 mm
Armour deck 1.50" / 38 mm, Conning tower 2.00" / 51 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 68,050 shp / 50,765 Kw = 31.11 kts
Range 8,000nm at 12.00 kts
Complement:
433 - 563
Cost:
£0.868 million / $3.474 million
Distribution of weights at normal displacement:
Armament: 73 tons, 0.9 %
Armour: 1,098 tons, 13.3 %
Belts: 491 tons, 5.9 %, Armament: 30 tons, 0.4 %, Armour Deck: 559 tons, 6.8 %
Conning Tower: 18 tons, 0.2 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,621 tons, 31.7 %
Hull, fittings & equipment: 3,412 tons, 41.3 %
Fuel, ammunition & stores: 1,003 tons, 12.1 %
Miscellaneous weights: 50 tons, 0.6 %
Metacentric height 3.2
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
Good seaboat, rides out heavy weather easily
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.27
Shellfire needed to sink: 9,097 lbs / 4,126 Kg = 109.4 x 5.5 " / 140 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1.3
(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: 0.10
Relative quality as seaboat: 1.31
Hull form characteristics:
Block coefficient: 0.503
Sharpness coefficient: 0.33
Hull speed coefficient 'M': 8.62
'Natural speed' for length: 23.87 kts
Power going to wave formation at top speed: 55 %
Trim: 55
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 110.7 %
Relative accommodation and working space: 161.9 %
(Average = 100%)
Displacement factor: 118 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.12
(Structure weight / hull surface area: 100 lbs / square foot or 488 Kg / square metre)
Relative longitudinal hull strength: 1.48
(for 20.00 ft / 6.10 m average freeboard, freeboard adjustment 5.43 ft)
Relative composite hull strength: 1.15