already tried to do that, the problem is that if you put a later date than 1919, springstyle won't let you put casemated secondary guns
[edit]well I tested anyway the results of putting casemated guns in SS vs putting them in normal open spots or even turrets...I saw no difference neither in hull strenght nor in seakeeping (wich strikes me as odd), so I simply went on putting four more 6' guns, and changing the report as if they were casemates.
Those guns would be casemated on the port side of the ship, under the flight deck. The starboard side would be covered by the 4 guns in front of and aft of the island (now they are 2 double mounts, not 4 simple mounts)
I then had to increase the belt extension a bit to cover the expanded magazines, that and the extra guns brought the hull strenght under 1, so I had to chop 0.25' of deck armor and increase a bit the BC to give the ship the needed composite strenght...here's the result:
Decurion, Spanish carrier laid down 1925
Displacement:
21.915 t light; 22.526 t standard; 25.899 t normal; 28.493 t full load
Loading submergence 1.159 tons/feet
Dimensions:
760,00 ft x 82,00 ft x 27,60 ft (normal load)
231,65 m x 24,99 m x 8,41 m
Armament:
8 - 6,00" / 152 mm guns (2 2nd turrets x 2 guns, 4 - 6,00" / 152 mm guns mounted low & subject to being washed down in a seaway)
10 - 1,46" / 37 mm AA guns
8 - 3,94" / 100 mm guns
Weight of broadside 1.124 lbs / 510 kg
Armour:
Belt 2,00" / 51 mm, ends unarmoured
Belts cover 102 % of normal area
2nd turrets 1,00" / 25 mm
AA gun shields 0,50" / 13 mm
Armour deck 3,25" / 83 mm, Conning tower 1,00" / 25 mm
Torpedo bulkhead 2,50" / 64 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 109.365 shp / 81.586 Kw = 30,00 kts
Range 14.000nm at 15,00 kts
Complement:
1.020 - 1.327
Cost:
£4,523 million / $18,093 million
Distribution of weights at normal displacement:
Armament: 140 tons, 0,5 %
Armour: 4.229 tons, 16,3 %
Belts: 452 tons, 1,7 %, Armament: 57 tons, 0,2 %, Armour Deck: 2.439 tons, 9,4 %
Conning Tower: 19 tons, 0,1 %, Torpedo bulkhead: 1.261 tons, 4,9 %
Machinery: 3.551 tons, 13,7 %
Hull, fittings & equipment: 7.394 tons, 28,6 %
Fuel, ammunition & stores: 3.984 tons, 15,4 %
Miscellaneous weights: 6.600 tons, 25,5 %
Metacentric height 4,4
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: 1,10
Shellfire needed to sink: 25.780 lbs / 11.694 Kg = 238,7 x 6 " / 152 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 3,4
(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: 0,05
Relative quality as seaboat: 1,44
Hull form characteristics:
Block coefficient: 0,527
Sharpness coefficient: 0,35
Hull speed coefficient 'M': 7,86
'Natural speed' for length: 27,57 kts
Power going to wave formation at top speed: 48 %
Trim: 49
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 101,9 %
Relative accommodation and working space: 166,7 %
(Average = 100%)
Displacement factor: 136 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0,99
(Structure weight / hull surface area: 116 lbs / square foot or 567 Kg / square metre)
Relative longitudinal hull strength: 1,02
(for 22,00 ft / 6,71 m average freeboard, freeboard adjustment 3,68 ft)
Relative composite hull strength: 1,00