Puyang-Class Battleship [1912] (Seondok)

Puyang-Class, Seondok County Battleship laid down 1912

Displacement:
	27,746 t light; 30,200 t standard; 32,022 t normal; 33,480 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(669.29 ft / 656.17 ft) x 98.43 ft x (32.81 / 33.96 ft)
	(204.00 m / 200.00 m) x 30.00 m  x (10.00 / 10.35 m)

Armament:
      15 - 13.78" / 350 mm 45.0 cal guns - 1,319.35lbs / 598.45kg shells, 150 per gun
	  Breech loading guns in turret on barbette mounts, 1911 Model
	  3 x Triple mounts on centreline, evenly spread
	  3 x Twin mounts on centreline, evenly spread
		3 raised mounts
      24 - 4.33" / 110 mm 45.0 cal guns - 40.96lbs / 18.58kg shells, 300 per gun
	  Quick firing guns in casemate mounts, 1904 Model
	  24 x Single mounts on sides, evenly spread
      4 - 0.98" / 25.0 mm 55.0 cal guns - 0.51lbs / 0.23kg shells, 400 per gun
	  Quick firing guns in deck mounts, 1901 Model
	  4 x Single mounts on sides, evenly spread
		4 raised mounts
      Weight of broadside 20,775 lbs / 9,424 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	12.2" / 310 mm	429.79 ft / 131.00 m	11.91 ft / 3.63 m
	Ends:	2.95" / 75 mm	226.38 ft / 69.00 m	11.91 ft / 3.63 m
	Upper:	4.72" / 120 mm	429.79 ft / 131.00 m	8.01 ft / 2.44 m
	  Main Belt covers 101 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		2.95" / 75 mm	429.79 ft / 131.00 m	29.99 ft / 9.14 m
	Beam between torpedo bulkheads 72.18 ft / 22.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	14.2" / 360 mm	7.87" / 200 mm		12.2" / 310 mm
	2nd:	2.95" / 75 mm	1.97" / 50 mm		1.97" / 50 mm

   - Armoured deck - multiple decks:
	For and Aft decks: 2.95" / 75 mm
	Forecastle: 1.97" / 50 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 13.78" / 350 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 2 shafts, 44,521 shp / 33,213 Kw = 22.50 kts
	Range 7,500nm at 12.00 kts
	Bunker at max displacement = 3,280 tons

Complement:
	1,196 - 1,555

Cost:
	£3.113 million / $12.451 million

Distribution of weights at normal displacement:
	Armament: 3,552 tons, 11.1 %
	   - Guns: 3,552 tons, 11.1 %
	Armour: 11,730 tons, 36.6 %
	   - Belts: 3,684 tons, 11.5 %
	   - Torpedo bulkhead: 1,408 tons, 4.4 %
	   - Armament: 4,055 tons, 12.7 %
	   - Armour Deck: 2,283 tons, 7.1 %
	   - Conning Tower: 299 tons, 0.9 %
	Machinery: 1,775 tons, 5.5 %
	Hull, fittings & equipment: 10,589 tons, 33.1 %
	Fuel, ammunition & stores: 4,276 tons, 13.4 %
	Miscellaneous weights: 100 tons, 0.3 %
	   - Above deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  36,819 lbs / 16,701 Kg = 28.1 x 13.8 " / 350 mm shells or 6.6 torpedoes
	Stability (Unstable if below 1.00): 1.03
	Metacentric height 5.1 ft / 1.6 m
	Roll period: 18.3 seconds
	Steadiness	- As gun platform (Average = 50 %): 58 %
			- Recoil effect (Restricted arc if above 1.00): 0.88
	Seaboat quality  (Average = 1.00): 1.16

Hull form characteristics:
	Hull has a flush deck,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.529 / 0.534
	Length to Beam Ratio: 6.67 : 1
	'Natural speed' for length: 25.62 kts
	Power going to wave formation at top speed: 42 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 4.00 degrees
	Stern overhang: 3.28 ft / 1.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  22.97 ft / 7.00 m,  19.69 ft / 6.00 m
	   - Forward deck:	30.00 %,  19.69 ft / 6.00 m,  16.40 ft / 5.00 m
	   - Aft deck:	35.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
	   - Quarter deck:	15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
	   - Average freeboard:		17.81 ft / 5.43 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 100.6 %
		- Above water (accommodation/working, high = better): 120.8 %
	Waterplane Area: 44,196 Square feet or 4,106 Square metres
	Displacement factor (Displacement / loading): 96 %
	Structure weight / hull surface area: 215 lbs/sq ft or 1,051 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.97
		- Longitudinal: 1.36
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room