The successor to my Arnoclass:
Tevere, Tuscan Kingdom heavy cruiser laid down 1923
Displacement: 16.120 t light; 16.858 t standard; 19.080 t normal; 20.858 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep) (696,01 ft / 688,98 ft) x 78,74 ft x (22,97 / 24,57 ft) (212,14 m / 210,00 m) x 24,00 m x (7,00 / 7,49 m)
Armament: 12  8,27" / 210 mm 45,0 cal guns  330,69lbs / 150,00kg shells, 150 per gun Breech loading guns in turret on barbette mounts, 1923 Model 4 x 3gun mounts on centreline ends, evenly spread 2 raised mounts  superfiring 6  2,99" / 76,0 mm 45,0 cal guns  11,02lbs / 5,00kg shells, 150 per gun Antiair guns in deck mounts, 1923 Model 6 x Single mounts on sides, evenly spread 6 raised mounts 20  1,57" / 40,0 mm 45,0 cal guns  2,20lbs / 1,00kg shells, 150 per gun Antiair guns in deck mounts, 1923 Model 20 x Single mounts on sides, evenly spread 10 raised mounts Weight of broadside 4.079 lbs / 1.850 kg 8  23,6" / 600 mm, 26,25 ft / 8,00 m torpedoes  2,096 t each, 16,769 t total In 4 sets of deck mounted carriage/fixed tubes
Armour:  Belts: Width (max) Length (avg) Height (avg) Main: 4,72" / 120 mm 447,83 ft / 136,50 m 10,66 ft / 3,25 m Ends: Unarmoured Main Belt covers 100% of normal length
 Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 5,91" / 150 mm 4,72" / 120 mm 5,91" / 150 mm 2nd: 0,79" / 20 mm   3rd: 0,39" / 10 mm  
 Armoured deck  multiple decks: 1,18" / 30 mm For and Aft decks Forecastle: 1,18" / 30 mm Quarter deck: 1,18" / 30 mm
 Conning towers: Forward 1,97" / 50 mm, Aft 0,00" / 0 mm
Machinery: Oil fired boilers, steam turbines, Geared drive, 4 shafts, 120.070 shp / 89.572 Kw = 33,00 kts Range 10.000nm at 15,00 kts Bunker at max displacement = 3.999 tons
Complement: 811  1.055
Cost: £4,227 million / $16,909 million
Distribution of weights at normal displacement: Armament: 1.000 tons, 5,2%  Guns: 983 tons, 5,2%  Torpedoes: 17 tons, 0,1% Armour: 2.715 tons, 14,2%  Belts: 944 tons, 4,9%  Armament: 884 tons, 4,6%  Armour Deck: 856 tons, 4,5%  Conning Tower: 30 tons, 0,2% Machinery: 4.013 tons, 21,0% Hull, fittings & equipment: 8.272 tons, 43,4% Fuel, ammunition & stores: 2.960 tons, 15,5% Miscellaneous weights: 120 tons, 0,6%  Hull below water: 25 tons  Hull above water: 20 tons  On freeboard deck: 50 tons  Above deck: 25 tons
Overall survivability and seakeeping ability: Survivability (Noncritical penetrating hits needed to sink ship): 28.038 lbs / 12.718 Kg = 99,2 x 8,3 " / 210 mm shells or 2,6 torpedoes Stability (Unstable if below 1.00): 1,20 Metacentric height 4,9 ft / 1,5 m Roll period: 15,0 seconds Steadiness  As gun platform (Average = 50 %): 51 %  Recoil effect (Restricted arc if above 1.00): 0,43 Seaboat quality (Average = 1.00): 1,02
Hull form characteristics: Hull has a flush deck, a normal bow and large transom stern Block coefficient (normal/deep): 0,536 / 0,548 Length to Beam Ratio: 8,75 : 1 'Natural speed' for length: 30,15 kts Power going to wave formation at top speed: 57 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 15,00 degrees Stern overhang: 0,00 ft / 0,00 m Freeboard (% = length of deck as a percentage of waterline length): Fore end, Aft end  Forecastle: 25,00%, 26,25 ft / 8,00 m, 22,97 ft / 7,00 m  Forward deck: 30,00%, 22,97 ft / 7,00 m, 22,97 ft / 7,00 m  Aft deck: 30,00%, 22,97 ft / 7,00 m, 19,69 ft / 6,00 m  Quarter deck: 15,00%, 19,69 ft / 6,00 m, 19,69 ft / 6,00 m  Average freeboard: 22,31 ft / 6,80 m Ship tends to be wet forward
Ship space, strength and comments: Space  Hull below water (magazines/engines, low = better): 85,3%  Above water (accommodation/working, high = better): 200,1% Waterplane Area: 38.891 Square feet or 3.613 Square metres Displacement factor (Displacement / loading): 137% Structure weight / hull surface area: 158 lbs/sq ft or 772 Kg/sq metre Hull strength (Relative):  Crosssectional: 1,14  Longitudinal: 1,48  Overall: 1,17 Hull space for machinery, storage, compartmentation is adequate Room for accommodation and workspaces is excellent
extra space again dedicated to three aircraft and their support.
Two to enter service in Jan 1925, two more fitting out and two under construction
Il Principe, Tuscan Kingdom Battleship laid down 1923
Displacement: 45.299 t light; 47.986 t standard; 50.864 t normal; 53.167 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep) (811,72 ft / 803,81 ft) x 104,99 ft x (32,81 / 34,06 ft) (247,41 m / 245,00 m) x 32,00 m x (10,00 / 10,38 m)
Armament: 10  14,96" / 380 mm 45,0 cal guns  1.873,93lbs / 850,00kg shells, 150 per gun Breech loading guns in turret on barbette mounts, 1923 Model 2 x 3gun mounts on centreline, evenly spread 2 x 2gun mounts on centreline ends, evenly spread 2 raised mounts Aft Main mounts separated by engine room 12  5,51" / 140 mm 45,0 cal guns  88,18lbs / 40,00kg shells, 150 per gun Quick firing guns in deck and hoist mounts, 1923 Model 6 x 2gun mounts on side ends, majority forward 8  3,94" / 100,0 mm 45,0 cal guns  30,77lbs / 13,96kg shells, 150 per gun Antiair guns in deck mounts, 1923 Model 8 x Single mounts on centreline, aft deck forward 8 raised mounts Weight of broadside 20.044 lbs / 9.092 kg
Armour:  Belts: Width (max) Length (avg) Height (avg) Main: 13,8" / 350 mm 459,32 ft / 140,00 m 13,12 ft / 4,00 m Ends: Unarmoured Main Belt covers 88% of normal length
 Torpedo Bulkhead: 1,18" / 30 mm 511,81 ft / 156,00 m 28,22 ft / 8,60 m
 Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 15,7" / 400 mm 7,87" / 200 mm 15,7" / 400 mm 2nd: 2,95" / 75 mm 1,97" / 50 mm 1,97" / 50 mm 3rd: 0,79" / 20 mm  
 Armoured deck  multiple decks: 6,69" / 170 mm For and Aft decks Forecastle: 3,94" / 100 mm Quarter deck: 3,94" / 100 mm
 Conning towers: Forward 1,97" / 50 mm, Aft 0,00" / 0 mm
Machinery: Oil fired boilers, steam turbines, Geared drive, 4 shafts, 173.899 shp / 129.729 Kw = 30,00 kts Range 7.500nm at 15,00 kts Bunker at max displacement = 5.180 tons
Complement: 1.693  2.201
Cost: £11,873 million / $47,492 million
Distribution of weights at normal displacement: Armament: 3.744 tons, 7,4% Armour: 16.216 tons, 31,9%  Belts: 3.641 tons, 7,2%  Torpedo bulkhead: 631 tons, 1,2%  Armament: 4.720 tons, 9,3%  Armour Deck: 7.165 tons, 14,1%  Conning Tower: 58 tons, 0,1% Machinery: 5.812 tons, 11,4% Hull, fittings & equipment: 19.427 tons, 38,2% Fuel, ammunition & stores: 5.566 tons, 10,9% Miscellaneous weights: 100 tons, 0,2%  Hull above water: 25 tons  On freeboard deck: 50 tons  Above deck: 25 tons
Overall survivability and seakeeping ability: Survivability (Noncritical penetrating hits needed to sink ship): 76.207 lbs / 34.567 Kg = 45,5 x 15,0 " / 380 mm shells or 9,7 torpedoes Stability (Unstable if below 1.00): 1,09 Metacentric height 6,3 ft / 1,9 m Roll period: 17,5 seconds Steadiness  As gun platform (Average = 50 %): 61 %  Recoil effect (Restricted arc if above 1.00): 0,89 Seaboat quality (Average = 1.00): 1,22
Hull form characteristics: Hull has low quarterdeck , a normal bow and a cruiser stern Block coefficient (normal/deep): 0,643 / 0,647 Length to Beam Ratio: 7,66 : 1 'Natural speed' for length: 28,35 kts Power going to wave formation at top speed: 53 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 15,00 degrees Stern overhang: 0,00 ft / 0,00 m Freeboard (% = length of deck as a percentage of waterline length): Fore end, Aft end  Forecastle: 30,00%, 29,53 ft / 9,00 m, 29,53 ft / 9,00 m  Forward deck: 30,00%, 29,53 ft / 9,00 m, 26,25 ft / 8,00 m  Aft deck: 25,00%, 26,25 ft / 8,00 m, 26,25 ft / 8,00 m  Quarter deck: 15,00%, 22,97 ft / 7,00 m, 22,97 ft / 7,00 m  Average freeboard: 27,23 ft / 8,30 m Ship tends to be wet forward
Ship space, strength and comments: Space  Hull below water (magazines/engines, low = better): 85,2%  Above water (accommodation/working, high = better): 196,1% Waterplane Area: 64.233 Square feet or 5.967 Square metres Displacement factor (Displacement / loading): 116% Structure weight / hull surface area: 229 lbs/sq ft or 1.118 Kg/sq metre Hull strength (Relative):  Crosssectional: 1,07  Longitudinal: 1,58  Overall: 1,11 Hull space for machinery, storage, compartmentation is adequate Room for accommodation and workspaces is excellent Good seaboat, rides out heavy weather easily
Regarding carriers, I can't design them in springsharp, so I'd like to have two small carriers finished based on my Arnoclass, I'd propose 13000 ts each and 1520 aircraft (comparable to HMS Hermes) and as a bigger ship, a conversion of a Caraccioloclass battleship to a carrier, to be finished in 1925 (planned by reallife Italy but not performed). The latter should have a total capacity of 6080 aircraft, being a bit smaller than the Lexingtons.
Edited to include the battleship design  do we go by standard not over 50 000 ts or normal not over the limit ?
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