For Desertfox;
Slightly modified from 770 project battleship. 305mm guns in triple turrets are available second hand. So are the 152mm/53 secondaries(or they will be). Armour isn't that bad and speed is fairly good.
771, Italian Battleship laid down 1931
Displacement:
16,988 t light; 18,002 t standard; 19,192 t normal; 20,144 t full load
Dimensions: Length overall / water x beam x draught
603.39 ft / 590.55 ft x 85.30 ft x 25.26 ft (normal load)
183.91 m / 180.00 m x 26.00 m x 7.70 m
Armament:
6 - 12.01" / 305 mm guns (2x3 guns), 996.49lbs / 452.00kg shells, 1931 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 5.98" / 152 mm guns (4x2 guns), 110.23lbs / 50.00kg shells, 1931 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships
12 - 3.94" / 100 mm guns (6x2 guns), 33.07lbs / 15.00kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
16 - 1.46" / 37.0 mm guns (12 mounts), 1.83lbs / 0.83kg shells, 1931 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 7,287 lbs / 3,305 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.0" / 280 mm 374.02 ft / 114.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Upper: 0.98" / 25 mm 374.02 ft / 114.00 m 8.20 ft / 2.50 m
Main Belt covers 97 % of normal length
- Torpedo Bulkhead:
1.18" / 30 mm 374.02 ft / 114.00 m 19.69 ft / 6.00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.6" / 270 mm 7.48" / 190 mm 9.84" / 250 mm
2nd: 2.76" / 70 mm 1.97" / 50 mm 1.97" / 50 mm
3rd: 0.79" / 20 mm 0.39" / 10 mm -
- Armour deck: 3.94" / 100 mm, Conning tower: 10.63" / 270 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 80,000 shp / 59,680 Kw = 28.11 kts
Range 3,000nm at 20.00 kts
Bunker at max displacement = 2,143 tons
Complement:
814 - 1,059
Cost:
£7.008 million / $28.031 million
Distribution of weights at normal displacement:
Armament: 805 tons, 4.2 %
Armour: 6,075 tons, 31.7 %
- Belts: 1,893 tons, 9.9 %
- Torpedo bulkhead: 322 tons, 1.7 %
- Armament: 1,188 tons, 6.2 %
- Armour Deck: 2,508 tons, 13.1 %
- Conning Tower: 164 tons, 0.9 %
Machinery: 2,392 tons, 12.5 %
Hull, fittings & equipment: 7,616 tons, 39.7 %
Fuel, ammunition & stores: 2,204 tons, 11.5 %
Miscellaneous weights: 100 tons, 0.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
26,808 lbs / 12,160 Kg = 31.0 x 12.0 " / 305 mm shells or 4.3 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 4.5 ft / 1.4 m
Roll period: 16.9 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.57
Seaboat quality (Average = 1.00): 1.02
Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.528
Length to Beam Ratio: 6.92 : 1
'Natural speed' for length: 24.30 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.25 ft / 8.00 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (50 %): 19.69 ft / 6.00 m
- Quarterdeck (20 %): 11.48 ft / 3.50 m (19.69 ft / 6.00 m before break)
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 18.57 ft / 5.66 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 97.3 %
- Above water (accommodation/working, high = better): 158.6 %
Waterplane Area: 34,436 Square feet or 3,199 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 157 lbs/sq ft or 769 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.55
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Project 772 is a design I had on file. It sacrifices speed and a bit of armour for 343mm main guns.
772, Italian Small Battleship laid down 1935
Displacement:
17,083 t light; 18,106 t standard; 19,996 t normal; 21,509 t full load
Dimensions: Length overall / water x beam x draught
618.00 ft / 606.96 ft x 85.96 ft x 25.26 ft (normal load)
188.37 m / 185.00 m x 26.20 m x 7.70 m
Armament:
6 - 13.50" / 343 mm guns (2x3 guns), 1,433.01lbs / 650.00kg shells, 1935 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 5.31" / 135 mm guns (4x2 guns), 72.09lbs / 32.70kg shells, 1935 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, all raised mounts - superfiring
16 - 1.46" / 37.0 mm guns (4x4 guns), 1.83lbs / 0.83kg shells, 1935 Model
Anti-aircraft guns in deck mounts
on side, all amidships
12 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1935 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 9,207 lbs / 4,176 kg
Shells per gun, main battery: 120
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.0" / 280 mm 360.89 ft / 110.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Upper: 0.98" / 25 mm 360.89 ft / 110.00 m 8.20 ft / 2.50 m
Main Belt covers 91 % of normal length
- Torpedo Bulkhead:
1.18" / 30 mm 360.89 ft / 110.00 m 19.69 ft / 6.00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.8" / 300 mm 9.06" / 230 mm 11.0" / 280 mm
2nd: 0.79" / 20 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm 0.39" / 10 mm -
- Armour deck: 3.54" / 90 mm, Conning tower: 2.76" / 70 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 60,000 shp / 44,760 Kw = 26.06 kts
Range 5,000nm at 20.00 kts
Bunker at max displacement = 3,403 tons
Complement:
840 - 1,093
Cost:
£8.544 million / $34.174 million
Distribution of weights at normal displacement:
Armament: 1,002 tons, 5.0 %
Armour: 6,302 tons, 31.5 %
- Belts: 2,421 tons, 12.1 %
- Torpedo bulkhead: 310 tons, 1.6 %
- Armament: 1,182 tons, 5.9 %
- Armour Deck: 2,345 tons, 11.7 %
- Conning Tower: 44 tons, 0.2 %
Machinery: 1,705 tons, 8.5 %
Hull, fittings & equipment: 8,024 tons, 40.1 %
Fuel, ammunition & stores: 2,913 tons, 14.6 %
Miscellaneous weights: 50 tons, 0.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
29,810 lbs / 13,522 Kg = 24.2 x 13.5 " / 343 mm shells or 5.0 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 6.1 ft / 1.9 m
Roll period: 14.6 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.41
Seaboat quality (Average = 1.00): 1.05
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.531
Length to Beam Ratio: 7.06 : 1
'Natural speed' for length: 24.64 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 16.40 ft / 5.00 m
- Mid (50 %): 14.76 ft / 4.50 m
- Quarterdeck (15 %): 14.76 ft / 4.50 m
- Stern: 14.76 ft / 4.50 m
- Average freeboard: 15.73 ft / 4.80 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 87.4 %
- Above water (accommodation/working, high = better): 122.8 %
Waterplane Area: 35,770 Square feet or 3,323 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 165 lbs/sq ft or 808 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.30
- Overall: 1.01
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent