OSK Yirtqich 1918 Oltrin Battleship

OSK Yirtqich, Oltrin State Battleship laid down 1918 (Engine 1920)

Displacement:
	25,836 t light; 27,705 t standard; 29,000 t normal; 30,036 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(611.55 ft / 598.43 ft) x 97.60 ft x (29.20 / 30.05 ft)
	(186.40 m / 182.40 m) x 29.75 m  x (8.90 / 9.16 m)

Armament:
      8 - 14.00" / 356 mm 50.0 cal guns - 1,452.45lbs / 658.82kg shells, 150 per gun
	  Breech loading guns in turret on barbette mounts, 1916 Model
	  4 x 2-gun mounts on centreline ends, evenly spread
		2 raised mounts - superfiring
      20 - 5.12" / 130 mm 51.0 cal guns - 71.29lbs / 32.33kg shells, 350 per gun
	  Breech loading guns in casemate mounts, 1909 Model
	  20 x Single mounts on sides, evenly spread
		20 hull mounts in casemates- Limited use in heavy seas
      6 - 3.94" / 100 mm 50.0 cal guns - 32.30lbs / 14.65kg shells, 400 per gun
	  Anti-air guns in deck mounts, 1910 Model
	  6 x Single mounts on sides, evenly spread
      Weight of broadside 13,239 lbs / 6,005 kg
      Main Torpedoes
      2 - 21.0" / 533 mm, 23.10 ft / 7.04 m torpedoes - 1.480 t each, 2.960 t total
	submerged bow tubes
      2nd Torpedoes
      2 - 21.0" / 533 mm, 23.10 ft / 7.04 m torpedoes - 1.480 t each, 2.960 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	13.0" / 330 mm	362.53 ft / 110.50 m	13.12 ft / 4.00 m
	Ends:	5.12" / 130 mm	235.89 ft / 71.90 m	13.12 ft / 4.00 m
	Upper:	8.07" / 205 mm	362.53 ft / 110.50 m	6.56 ft / 2.00 m
	  Main Belt covers 93 % of normal length
	  Main Belt inclined -4.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
		3.94" / 100 mm	362.53 ft / 110.50 m	27.89 ft / 8.50 m
	Beam between torpedo bulkheads 59.06 ft / 18.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	16.9" / 430 mm	6.10" / 155 mm		13.0" / 330 mm
	2nd:	5.12" / 130 mm	      -			3.54" / 90 mm

   - Armoured deck - multiple decks:
	For and Aft decks: 3.54" / 90 mm
	Forecastle: 1.57" / 40 mm  Quarter deck: 1.57" / 40 mm

   - Conning towers: Forward 16.93" / 430 mm, Aft 12.99" / 330 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 4 shafts, 34,181 shp / 25,499 Kw = 21.00 kts
	Range 7,500nm at 12.00 kts
	Bunker at max displacement = 2,332 tons

Complement:
	1,110 - 1,444

Cost:
	£4.726 million / $18.903 million

Distribution of weights at normal displacement:
	Armament: 2,979 tons, 10.3 %
	   - Guns: 2,969 tons, 10.2 %
	   - Weapons: 10 tons, 0.0 %
	Armour: 11,655 tons, 40.2 %
	   - Belts: 4,210 tons, 14.5 %
	   - Torpedo bulkhead: 1,473 tons, 5.1 %
	   - Armament: 2,853 tons, 9.8 %
	   - Armour Deck: 2,511 tons, 8.7 %
	   - Conning Towers: 608 tons, 2.1 %
	Machinery: 1,195 tons, 4.1 %
	Hull, fittings & equipment: 9,907 tons, 34.2 %
	Fuel, ammunition & stores: 3,164 tons, 10.9 %
	Miscellaneous weights: 100 tons, 0.3 %
	   - On freeboard deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  52,530 lbs / 23,827 Kg = 38.3 x 14.0 " / 356 mm shells or 9.4 torpedoes
	Stability (Unstable if below 1.00): 1.10
	Metacentric height 5.8 ft / 1.8 m
	Roll period: 17.0 seconds
	Steadiness	- As gun platform (Average = 50 %): 82 %
			- Recoil effect (Restricted arc if above 1.00): 0.85
	Seaboat quality  (Average = 1.00): 1.65

Hull form characteristics:
	Hull has rise forward of midbreak,
	  an extended bulbous bow and a cruiser stern
	Block coefficient (normal/deep): 0.595 / 0.599
	Length to Beam Ratio: 6.13 : 1
	'Natural speed' for length: 24.46 kts
	Power going to wave formation at top speed: 43 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 14.00 degrees
	Stern overhang: 6.56 ft / 2.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	17.50 %,  26.25 ft / 8.00 m,  23.62 ft / 7.20 m
	   - Forward deck:	44.00 %,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
	   - Aft deck:	21.00 %,  20.34 ft / 6.20 m,  20.34 ft / 6.20 m
	   - Quarter deck:	17.50 %,  20.34 ft / 6.20 m,  20.34 ft / 6.20 m
	   - Average freeboard:		22.54 ft / 6.87 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 93.0 %
		- Above water (accommodation/working, high = better): 164.6 %
	Waterplane Area: 42,525 Square feet or 3,951 Square metres
	Displacement factor (Displacement / loading): 110 %
	Structure weight / hull surface area: 190 lbs/sq ft or 926 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.94
		- Longitudinal: 1.76
		- Overall: 1.00
	Adequate 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