Su Yi-Class Turret Ironclad Battleship [1888] (Taishe)

Su Yi-Class, Taishe Dynasty Turret Ironclad Battleship laid down 1888

Displacement:
	11,690 t light; 12,200 t standard; 13,457 t normal; 14,463 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(400.26 ft / 393.70 ft) x 85.30 ft x (26.25 / 27.77 ft)
	(122.00 m / 120.00 m) x 26.00 m  x (8.00 / 8.46 m)

Armament:
      4 - 14.17" / 360 mm 33.0 cal guns - 1,274.51lbs / 578.11kg shells, 70 per gun
	  Breech loading guns in turret on barbette mounts, 1885 Model
	  2 x Twin mounts on sides amidships
      4 - 5.91" / 150 mm 40.0 cal guns - 92.57lbs / 41.99kg shells, 200 per gun
	  Quick firing guns in turret on barbette mounts, 1882 Model
	  4 x Single mounts on sides, evenly spread
      16 - 0.93" / 23.5 mm 20.0 cal guns - 0.33lbs / 0.15kg shells, 500 per gun
	  Quick firing guns in deck mounts, 1884 Model
	  4 x Quad mounts on sides, evenly spread
		4 raised mounts
      Weight of broadside 5,474 lbs / 2,483 kg
      Main Torpedoes
      4 - 15.0" / 380 mm, 13.12 ft / 4.00 m torpedoes - 0.216 t each, 0.863 t total
	submerged bow & stern tubes
      2nd Torpedoes
      4 - 15.0" / 380 mm, 13.12 ft / 4.00 m torpedoes - 0.216 t each, 0.863 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	15.0" / 380 mm	255.91 ft / 78.00 m	11.09 ft / 3.38 m
	Ends:	3.94" / 100 mm	137.76 ft / 41.99 m	11.09 ft / 3.38 m
	Upper:	3.94" / 100 mm	255.91 ft / 78.00 m	8.01 ft / 2.44 m
	  Main Belt covers 100 % of normal length
	  Main Belt inclined 10.00 degrees (positive = in)

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		1.97" / 50 mm	255.91 ft / 78.00 m	23.88 ft / 7.28 m
	Beam between torpedo bulkheads 52.49 ft / 16.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	12.6" / 320 mm	7.87" / 200 mm		12.6" / 320 mm
	2nd:	5.91" / 150 mm	3.94" / 100 mm		3.94" / 100 mm
	3rd:	0.98" / 25 mm	      -			      -

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

   - Conning towers: Forward 7.87" / 200 mm, Aft 0.00" / 0 mm

Machinery:
	Coal fired boilers, complex reciprocating steam engines,
	Direct drive, 2 shafts, 6,863 ihp / 5,120 Kw = 15.00 kts
	Range 10,000nm at 8.00 kts
	Bunker at max displacement = 2,263 tons (100% coal)

Complement:
	624 - 812

Cost:
	£0.970 million / $3.881 million

Distribution of weights at normal displacement:
	Armament: 730 tons, 5.4 %
	   - Guns: 727 tons, 5.4 %
	   - Weapons: 3 tons, 0.0 %
	Armour: 5,055 tons, 37.6 %
	   - Belts: 2,541 tons, 18.9 %
	   - Torpedo bulkhead: 445 tons, 3.3 %
	   - Armament: 1,125 tons, 8.4 %
	   - Armour Deck: 848 tons, 6.3 %
	   - Conning Tower: 96 tons, 0.7 %
	Machinery: 1,294 tons, 9.6 %
	Hull, fittings & equipment: 4,511 tons, 33.5 %
	Fuel, ammunition & stores: 1,767 tons, 13.1 %
	Miscellaneous weights: 100 tons, 0.7 %
	   - Above deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  23,343 lbs / 10,588 Kg = 16.9 x 14.2 " / 360 mm shells or 32.0 torpedoes
	Stability (Unstable if below 1.00): 1.39
	Metacentric height 7.0 ft / 2.1 m
	Roll period: 13.5 seconds
	Steadiness	- As gun platform (Average = 50 %): 93 %
			- Recoil effect (Restricted arc if above 1.00): 0.36
	Seaboat quality  (Average = 1.00): 1.85

Hull form characteristics:
	Hull has a flush deck,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.534 / 0.543
	Length to Beam Ratio: 4.62 : 1
	'Natural speed' for length: 19.84 kts
	Power going to wave formation at top speed: 39 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): -5.00 degrees
	Stern overhang: 0.00 ft / 0.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  19.69 ft / 6.00 m,  18.04 ft / 5.50 m
	   - Forward deck:	30.00 %,  18.04 ft / 5.50 m,  14.76 ft / 4.50 m
	   - Aft deck:	35.00 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
	   - Quarter deck:	15.00 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
	   - Average freeboard:		16.04 ft / 4.89 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 94.0 %
		- Above water (accommodation/working, high = better): 109.4 %
	Waterplane Area: 23,097 Square feet or 2,146 Square metres
	Displacement factor (Displacement / loading): 118 %
	Structure weight / hull surface area: 164 lbs/sq ft or 803 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.89
		- Longitudinal: 2.64
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Adequate 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