Oxtongca-Mang-Class Ironclad [1872] (Zhuoteng)

Oxtongca-Mang-Class, Zhuoteng Empire Ironclad laid down 1872
Armoured Corvette (Broadside ironclad)

Displacement:
	6,054 t light; 6,500 t standard; 7,118 t normal; 7,613 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(305.12 ft / 295.28 ft) x 59.06 ft x (19.69 / 20.90 ft)
	(93.00 m / 90.00 m) x 18.00 m  x (6.00 / 6.37 m)

Armament:
      12 - 10.63" / 270 mm 15.0 cal guns - 440.92lbs / 200.00kg shells, 80 per gun
	  Muzzle loading guns in broadside mounts, 1869 Model
	  12 x Single mounts on sides, evenly spread
      40 - 3.94" / 100 mm 120.0 cal guns - 30.86lbs / 14.00kg shells, 100 per gun
	  Muzzle loading guns in deck mounts, 1870 Model
	  10 x Quad mounts on sides, evenly spread
		10 raised mounts
      Weight of broadside 6,526 lbs / 2,960 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	15.0" / 380 mm	191.93 ft / 58.50 m	9.22 ft / 2.81 m
	Ends:	6.50" / 165 mm	103.31 ft / 31.49 m	9.22 ft / 2.81 m
	Upper:	4.53" / 115 mm	191.93 ft / 58.50 m	8.01 ft / 2.44 m
	  Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		0.79" / 20 mm	191.93 ft / 58.50 m	19.23 ft / 5.86 m
	Beam between torpedo bulkheads 59.06 ft / 18.00 m

Machinery:
	Coal fired boilers, simple reciprocating steam engines,
	Direct drive, 2 shafts, 4,699 ihp / 3,505 Kw = 14.00 kts
	Range 1,000nm at 14.00 kts
	Bunker at max displacement = 1,113 tons (100% coal)

Complement:
	386 - 503

Cost:
	£0.608 million / $2.431 million

Distribution of weights at normal displacement:
	Armament: 609 tons, 8.6 %
	   - Guns: 609 tons, 8.6 %
	Armour: 1,888 tons, 26.5 %
	   - Belts: 1,781 tons, 25.0 %
	   - Torpedo bulkhead: 108 tons, 1.5 %
	Machinery: 1,106 tons, 15.5 %
	Hull, fittings & equipment: 2,450 tons, 34.4 %
	Fuel, ammunition & stores: 1,064 tons, 15.0 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  6,606 lbs / 2,996 Kg = 15.1 x 10.6 " / 270 mm shells or 1.6 torpedoes
	Stability (Unstable if below 1.00): 1.60
	Metacentric height 5.0 ft / 1.5 m
	Roll period: 11.1 seconds
	Steadiness	- As gun platform (Average = 50 %): 87 %
			- Recoil effect (Restricted arc if above 1.00): 0.73
	Seaboat quality  (Average = 1.00): 1.73

Hull form characteristics:
	Hull has a flush deck,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.726 / 0.731
	Length to Beam Ratio: 5.00 : 1
	'Natural speed' for length: 17.18 kts
	Power going to wave formation at top speed: 46 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): -20.00 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 %,  14.76 ft / 4.50 m,  13.12 ft / 4.00 m
	   - Forward deck:	30.00 %,  13.12 ft / 4.00 m,  11.48 ft / 3.50 m
	   - Aft deck:	35.00 %,  11.48 ft / 3.50 m,  11.48 ft / 3.50 m
	   - Quarter deck:	15.00 %,  11.48 ft / 3.50 m,  11.48 ft / 3.50 m
	   - Average freeboard:		12.19 ft / 3.72 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 83.7 %
		- Above water (accommodation/working, high = better): 83.7 %
	Waterplane Area: 14,299 Square feet or 1,328 Square metres
	Displacement factor (Displacement / loading): 111 %
	Structure weight / hull surface area: 147 lbs/sq ft or 715 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.90
		- Longitudinal: 2.56
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Cramped 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