Katyusha-class Battle Island

SVK Katyusha, Soviet Russian Katyusha-class battle island laid down 1950

Displacement:
	1,089,553 t light; 1,141,399 t standard; 1,149,805 t normal; 1,156,529 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(2,262.82 ft / 2,185.04 ft) x 400.26 ft x (82.02 / 82.39 ft)
	(689.71 m / 666.00 m) x 122.00 m  x (25.00 / 25.11 m)

Armament:
      40 - 22.00" / 559 mm 52.0 cal guns - 5,685.08lbs / 2,578.71kg shells, 150 per gun
	  Breech loading guns in turret on barbette mounts, 1950 Model
	  12 x 3-gun mounts on sides, evenly spread
		6 raised mounts
	  2 x 2-gun mounts on sides amidships
      24 - 18.00" / 457 mm 45.0 cal guns - 4,000.00lbs / 1,814.37kg shells, 150 per gun
	  Breech loading guns in turret on barbette mounts, 1950 Model
	  12 x 2-gun mounts on sides, evenly spread
		6 raised mounts
      48 - 6.00" / 152 mm 57.0 cal guns - 121.25lbs / 55.00kg shells, 380 per gun
	  Dual purpose guns in turret on barbette mounts, 1950 Model
	  24 x 2-gun mounts on sides, evenly spread
		8 raised mounts
      64 - 4.00" / 102 mm 45.0 cal guns - 38.47lbs / 17.45kg shells, 450 per gun
	  Dual purpose guns in deck and hoist mounts, 1950 Model
	  32 x Twin mounts on sides, evenly spread
		14 raised mounts
      224 - 0.50" / 12.7 mm 90.0 cal guns - 0.09lbs / 0.04kg shells, 5,000 per gun
	  Machine guns in deck mounts, 1950 Model
	  56 x 2 row quad mounts on sides, evenly spread
		14 raised mounts
      Weight of broadside 331,705 lbs / 150,459 kg
      Main Torpedoes
      30 - 21.0" / 533 mm, 22.97 ft / 7.00 m torpedoes - 1.596 t each, 47.888 t total
	In 6 sets of deck mounted side rotating tubes
      2nd Torpedoes
      120 - 21.0" / 533 mm, 22.97 ft / 7.00 m torpedoes - 1.596 t each, 191.550 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	16.1" / 410 mm	1,529.53 ft / 466.20 m	24.02 ft / 7.32 m
	Ends:	5.00" / 127 mm	655.48 ft / 199.79 m	24.02 ft / 7.32 m
	Upper:	5.00" / 127 mm	1,529.53 ft / 466.20 m	8.01 ft / 2.44 m
	  Main Belt covers 108 % of normal length
	  Main Belt inclined -20.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
		10.0" / 254 mm	1,529.53 ft / 466.20 m	75.30 ft / 22.95 m
	Beam between torpedo bulkheads 278.87 ft / 85.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	25.6" / 650 mm	11.8" / 300 mm		25.6" / 650 mm
	2nd:	21.7" / 550 mm	9.84" / 250 mm		21.7" / 550 mm
	3rd:	7.87" / 200 mm	7.09" / 180 mm		7.87" / 200 mm
	4th:	2.95" / 75 mm	1.97" / 50 mm		2.95" / 75 mm
	5th:	0.20" / 5 mm	      -			      -

   - Armoured deck - multiple decks:
	For and Aft decks: 13.58" / 345 mm
	Forecastle: 2.99" / 76 mm  Quarter deck: 2.99" / 76 mm

Machinery:
	Oil fired boilers, steam turbines,
	Electric motors, 4 shafts, 245,029 shp / 182,792 Kw = 20.00 kts
	Range 3,000nm at 10.00 kts
	Bunker at max displacement = 15,130 tons

Complement:
	17,555 - 22,823

Cost:
	£554.154 million / $2,216.615 million

Distribution of weights at normal displacement:
	Armament: 60,452 tons, 5.3 %
	   - Guns: 60,117 tons, 5.2 %
	   - Weapons: 335 tons, 0.0 %
	Armour: 436,637 tons, 38.0 %
	   - Belts: 31,712 tons, 2.8 %
	   - Torpedo bulkhead: 42,612 tons, 3.7 %
	   - Armament: 219,393 tons, 19.1 %
	   - Armour Deck: 142,922 tons, 12.4 %
	Machinery: 5,862 tons, 0.5 %
	Hull, fittings & equipment: 464,101 tons, 40.4 %
	Fuel, ammunition & stores: 60,252 tons, 5.2 %
	Miscellaneous weights: 122,500 tons, 10.7 %
	   - Hull above water: 122,500 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  3,998,535 lbs / 1,813,705 Kg = 751.0 x 22.0 " / 559 mm shells or 2,748.0 torpedoes
	Stability (Unstable if below 1.00): 1.20
	Metacentric height 55.7 ft / 17.0 m
	Roll period: 22.5 seconds
	Steadiness	- As gun platform (Average = 50 %): 100 %
			- Recoil effect (Restricted arc if above 1.00): 0.41
	Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
	Hull has raised forecastle,
	  an extended bulbous bow and large transom stern
	Block coefficient (normal/deep): 0.561 / 0.562
	Length to Beam Ratio: 5.46 : 1
	'Natural speed' for length: 55.84 kts
	Power going to wave formation at top speed: 15 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 35.00 degrees
	Stern overhang: 6.56 ft / 2.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	15.00 %,  101.71 ft / 31.00 m,  101.71 ft / 31.00 m
	   - Forward deck:	35.00 %,  98.43 ft / 30.00 m,  98.43 ft / 30.00 m
	   - Aft deck:	35.00 %,  98.43 ft / 30.00 m,  98.43 ft / 30.00 m
	   - Quarter deck:	15.00 %,  98.43 ft / 30.00 m,  98.43 ft / 30.00 m
	   - Average freeboard:		98.92 ft / 30.15 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 57.8 %
		- Above water (accommodation/working, high = better): 685.2 %
	Waterplane Area: 642,195 Square feet or 59,662 Square metres
	Displacement factor (Displacement / loading): 131 %
	Structure weight / hull surface area: 582 lbs/sq ft or 2,844 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.93
		- Longitudinal: 1.90
		- Overall: 1.00
	Excellent machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Ship has slow, easy roll, a good, steady gun platform
	Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Aviation Facilities:
-350 Soviet Airforce/Naval Airforce combat aircraft
-8x steam catapults, integrated into leading edge of flight deck

Deck Armor Layout:
-230mm armored flight-deck
-115mm armored hangar floor