Yan Su-Class Battleship [1905] (Taishe)

Yan Su-Class, Taishe Dynasty Battleship laid down 1905

Displacement:
	15,922 t light; 17,000 t standard; 18,434 t normal; 19,581 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(501.97 ft / 492.13 ft) x 86.94 ft x (27.07 / 28.40 ft)
	(153.00 m / 150.00 m) x 26.50 m  x (8.25 / 8.66 m)

Armament:
      8 - 12.60" / 320 mm 45.0 cal guns - 1,008.35lbs / 457.38kg shells, 100 per gun
	  Breech loading guns in turret on barbette mounts, 1904 Model
	  2 x Twin mounts on centreline, evenly spread
	  4 x Single mounts on sides, evenly spread
      14 - 5.91" / 150 mm 45.0 cal guns - 103.86lbs / 47.11kg shells, 225 per gun
	  Quick firing guns in casemate mounts, 1905 Model
	  10 x Single mounts on sides, evenly spread
	  4 x Single mounts on centreline, evenly spread
      14 - 3.94" / 100 mm 50.0 cal guns - 32.30lbs / 14.65kg shells, 300 per gun
	  Quick firing guns in casemate mounts, 1904 Model
	  14 x Single mounts on sides, evenly spread
		14 hull mounts in casemates- Limited use in heavy seas
      8 - 0.98" / 25.0 mm 55.0 cal guns - 0.51lbs / 0.23kg shells, 2,000 per gun
	  Quick firing guns in deck mounts, 1894 Model
	  8 x Single mounts on centreline, evenly spread
		8 double raised mounts
      Weight of broadside 9,977 lbs / 4,526 kg
      Main Torpedoes
      2 - 23.6" / 600 mm, 6.56 ft / 2.00 m torpedoes - 0.515 t each, 1.029 t total
	submerged bow & stern tubes
      2nd Torpedoes
      12 - 23.6" / 600 mm, 6.56 ft / 2.00 m torpedoes - 0.515 t each, 6.176 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	12.6" / 320 mm	328.08 ft / 100.00 m	11.19 ft / 3.41 m
	Ends:	3.15" / 80 mm	164.04 ft / 50.00 m	11.19 ft / 3.41 m
	Upper:	6.30" / 160 mm	328.08 ft / 100.00 m	8.01 ft / 2.44 m
	  Main Belt covers 103 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		2.95" / 75 mm	328.08 ft / 100.00 m	24.97 ft / 7.61 m
	Beam between torpedo bulkheads 54.13 ft / 16.50 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	12.6" / 320 mm	9.84" / 250 mm		9.84" / 250 mm
	2nd:	5.91" / 150 mm	1.97" / 50 mm		5.91" / 150 mm
	3rd:	3.94" / 100 mm	1.97" / 50 mm		1.97" / 50 mm
	4th:	0.49" / 13 mm	      -			      -

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

   - Conning towers: Forward 12.60" / 320 mm, Aft 0.00" / 0 mm

Machinery:
	Coal and oil fired boilers, complex reciprocating steam engines,
	Direct drive, 4 shafts, 7,844 ihp / 5,851 Kw = 15.00 kts
	Range 8,500nm at 10.00 kts
	Bunker at max displacement = 2,581 tons (75% coal)

Complement:
	790 - 1,028

Cost:
	£1.559 million / $6.235 million

Distribution of weights at normal displacement:
	Armament: 1,978 tons, 10.7 %
	   - Guns: 1,968 tons, 10.7 %
	   - Weapons: 10 tons, 0.1 %
	Armour: 8,046 tons, 43.6 %
	   - Belts: 2,981 tons, 16.2 %
	   - Torpedo bulkhead: 895 tons, 4.9 %
	   - Armament: 2,325 tons, 12.6 %
	   - Armour Deck: 1,655 tons, 9.0 %
	   - Conning Tower: 189 tons, 1.0 %
	Machinery: 1,109 tons, 6.0 %
	Hull, fittings & equipment: 4,639 tons, 25.2 %
	Fuel, ammunition & stores: 2,512 tons, 13.6 %
	Miscellaneous weights: 150 tons, 0.8 %
	   - On freeboard deck: 50 tons
	   - Above deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  29,296 lbs / 13,288 Kg = 29.3 x 12.6 " / 320 mm shells or 15.1 torpedoes
	Stability (Unstable if below 1.00): 1.23
	Metacentric height 5.9 ft / 1.8 m
	Roll period: 15.0 seconds
	Steadiness	- As gun platform (Average = 50 %): 83 %
			- Recoil effect (Restricted arc if above 1.00): 0.59
	Seaboat quality  (Average = 1.00): 1.66

Hull form characteristics:
	Hull has a flush deck,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.557 / 0.564
	Length to Beam Ratio: 5.66 : 1
	'Natural speed' for length: 22.18 kts
	Power going to wave formation at top speed: 31 %
	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): 100.9 %
		- Above water (accommodation/working, high = better): 124.4 %
	Waterplane Area: 30,060 Square feet or 2,793 Square metres
	Displacement factor (Displacement / loading): 100 %
	Structure weight / hull surface area: 155 lbs/sq ft or 755 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.93
		- Longitudinal: 1.87
		- 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