WesWorld

Here is a class of battleship I have finally gotten the time to sim in SpringSharp, the Soviet Union's "Sovetsky" Class battleships. The only European battleships that would have been close to rivaling the Yamatos.

*Note: These ships have insanely thick armor, quite literally floating fortresses. Some of design features (like thicker 17 in belt armor near the forward magazines) I couldn't incorporate into the sim; a 30 knot speed which begs explanation of SS3's hp/resistance formulas; and massively overestimated range with maximum fuel. All this makes me doubt the validity of such a ship as such.

Anyways, here are the specs as I have created in SS3.



Sovetsky Soyuz Class, Soviet Union Battleships laid down 1940

Units: Sovetsky Soyuz (Soviet Union); Sovetsky Ukraina (Soviet Ukraine); Sovetsky Belorossiya (Soviet Belorussia); Sovetsky Rossiya (Soviet Russia)

Displacement:
55,730 t light; 58,422 t standard; 62,000 t normal; 64,862 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(884.09 ft / 853.02 ft) x 127.62 ft x (34.12 / 35.40 ft)
(269.47 m / 260.00 m) x 38.90 m x (10.40 / 10.79 m)

Armament:
9 - 16.00" / 406 mm 51.0 cal guns - 2,440.01lbs / 1,106.77kg shells, 100 per gun
Breech loading guns in turret on barbette mounts, 1940 Model
3 x 3-gun mounts on centreline ends, majority forward
1 raised mount - superfiring

12 - 6.00" / 152 mm 57.0 cal guns - 120.00lbs / 54.43kg shells, 170 per gun
Dual purpose guns in deck and hoist mounts, 1938 Model
6 x Twin mounts on sides, evenly spread
2 raised mounts

12 - 3.94" / 100 mm 45.0 cal guns - 34.00lbs / 15.42kg shells, 400 per gun
Anti-air guns in deck mounts, 1934 Model
6 x Twin mounts on sides, evenly spread

40 - 1.46" / 37.0 mm 61.0 cal guns - 1.61lbs / 0.73kg shells, 150 per gun
Anti-air guns in deck mounts, 1939 Model
10 x Quad mounts on sides, evenly spread
4 raised mounts
Weight of broadside 23,872 lbs / 10,828 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.8" / 375 mm 452.76 ft / 138.00 m 18.70 ft / 5.70 m
Ends: 7.87" / 200 mm 295.28 ft / 90.00 m 10.83 ft / 3.30 m
104.99 ft / 32.00 m Unarmoured ends
Upper: 11.8" / 300 mm 452.76 ft / 138.00 m 13.94 ft / 4.25 m
Main Belt covers 82 % of normal length
Main Belt inclined 5.00 degrees (positive = in)

- Torpedo Bulkhead - Strengthened structural bulkheads:
3.00" / 76 mm 452.76 ft / 138.00 m 27.07 ft / 8.25 m
Beam between torpedo bulkheads 111.55 ft / 34.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 19.5" / 495 mm 8.07" / 205 mm 16.7" / 425 mm
2nd: 3.94" / 100 mm 2.56" / 65 mm 3.25" / 83 mm

- Armoured deck - multiple decks:
For and Aft decks: 6.10" / 155 mm
Forecastle: 0.98" / 25 mm Quarter deck: 0.98" / 25 mm

- Conning towers: Forward 16.73" / 425 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 201,000 shp / 149,946 Kw = 30.35 kts
Range 10,572nm at 14.50 kts
Bunker at max displacement = 6,440 tons

Complement:
1,963 - 2,553

Cost:
£29.795 million / $119.181 million

Distribution of weights at normal displacement:
Armament: 4,873 tons, 7.9 %
- Guns: 4,873 tons, 7.9 %
Armour: 23,867 tons, 38.5 %
- Belts: 10,000 tons, 16.1 %
- Torpedo bulkhead: 1,360 tons, 2.2 %
- Armament: 4,408 tons, 7.1 %
- Armour Deck: 7,534 tons, 12.2 %
- Conning Tower: 565 tons, 0.9 %
Machinery: 5,374 tons, 8.7 %
Hull, fittings & equipment: 20,866 tons, 33.7 %
Fuel, ammunition & stores: 6,270 tons, 10.1 %
Miscellaneous weights: 750 tons, 1.2 %
- Hull below water: 350 tons
- Hull above water: 200 tons
- On freeboard deck: 100 tons
- Above deck: 100 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
101,829 lbs / 46,189 Kg = 49.7 x 16.0 " / 406 mm shells or 17.2 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 9.2 ft / 2.8 m
Roll period: 17.6 seconds
Steadiness - As gun platform (Average = 50 %): 69 %
- Recoil effect (Restricted arc if above 1.00): 0.53
Seaboat quality (Average = 1.00): 1.16

Hull form characteristics:
Hull has a flush deck,
a normal bow and a round stern
Block coefficient (normal/deep): 0.584 / 0.589
Length to Beam Ratio: 6.68 : 1
'Natural speed' for length: 29.21 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 19.50 degrees
Stern overhang: 19.69 ft / 6.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 32.15 ft / 9.80 m, 27.56 ft / 8.40 m
- Forward deck: 30.00 %, 27.56 ft / 8.40 m, 25.26 ft / 7.70 m
- Aft deck: 35.00 %, 25.26 ft / 7.70 m, 25.26 ft / 7.70 m
- Quarter deck: 15.00 %, 25.26 ft / 7.70 m, 25.26 ft / 7.70 m
- Average freeboard: 26.43 ft / 8.06 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 71.9 %
- Above water (accommodation/working, high = better): 196.3 %
Waterplane Area: 78,453 Square feet or 7,288 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 231 lbs/sq ft or 1,128 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.35
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room

Design notes:
speed: most likely at most 28 knots
actual range: 6,300 nautical miles @ 14.5 kts