(1) the RAN needs a long rang CLAAAs escort for my CVs as you know austalia , ops are in lage Oceans the Indian & the pacific so thats what the mackey is desing for as two the why the 5.25" or 5.24" gun in your case its a good DP it can take on ships and aircaft and all so if needed the the ship can go raiding she the best of both worlds long sea legs and rang to match like i side i came up with with the idear over a long time it all started with a othere class of CL with 6"guns much lager then the mackey the juneen and can it do 35.11kts hear i will put it up for you have a look at it.
Juneen, Australia Light Crusers laid down 1933
Displacement:
7,720 t light; 7,955 t standard; 8,925 t normal; 9,665 t full load
Loading submergence 443 tons/feet
Dimensions:
567.00 ft x 44.00 ft x 25.50 ft (normal load)
172.82 m x 13.41 m x 7.77 m
Armament:
6 - 6.00" / 152 mm guns (3 Main turrets x 2 guns)
15 - 1.56" / 40 mm AA guns
20 - 0.80" / 20 mm guns
Weight of broadside 682 lbs / 309 kg
8 - 21.0" / 533.4 mm above water torpedoes
Armour:
Belt 5.00" / 127 mm, ends unarmoured
Belts cover 115 % of normal area
Main belt does not fully protect magazines and engineering spaces
Main turrets 2.00" / 51 mm, AA gun shields 1.00" / 25 mm, Light gun shields 2.00" / 51 mm
Armour deck 1.30" / 33 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 113,667 shp / 84,796 Kw = 35.11 kts
Range 13,000nm at 12.00 kts
Complement:
459 - 596
Cost:
£3.807 million / $15.230 million
Distribution of weights at normal displacement:
Armament: 85 tons, 1.0 %
Armour: 1,194 tons, 13.4 %
Belts: 676 tons, 7.6 %, Armament: 145 tons, 1.6 %, Armour Deck: 373 tons, 4.2 %
Conning Tower: 0 tons, 0.0 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 3,312 tons, 37.1 %
Hull, fittings & equipment: 3,129 tons, 35.1 %
Fuel, ammunition & stores: 1,205 tons, 13.5 %
Miscellaneous weights: 0 tons, 0.0 %
Metacentric height 1.5
Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is adequate
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: 1.02
Shellfire needed to sink: 6,025 lbs / 2,733 Kg = 55.8 x 6.0 " / 152 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.9
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 100 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.86
Relative quality as seaboat: 1.93
Hull form characteristics:
Block coefficient: 0.491
Sharpness coefficient: 0.30
Hull speed coefficient 'M': 8.36
'Natural speed' for length: 23.81 kts
Power going to wave formation at top speed: 58 %
Trim: 61
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 127.7 %
Relative accommodation and working space: 119.7 %
(Average = 100%)
Displacement factor: 105 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.92
(Structure weight / hull surface area: 88 lbs / square foot or 431 Kg / square metre)
Relative longitudinal hull strength: 2.12
(for 23.90 ft / 7.28 m average freeboard, freeboard adjustment 9.10 ft)
Relative composite hull strength: 1.00