Tantao-Class Battleship, Design 3B [1924] (Taishe)

Tantao-Class, Taishe Dynasty Fast Battleship laid down 1924 (Engine 1925)

Displacement:
	48,440 t light; 50,875 t standard; 54,196 t normal; 56,853 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(892.39 ft / 885.83 ft) x 104.99 ft x (36.09 / 37.50 ft)
	(272.00 m / 270.00 m) x 32.00 m  x (11.00 / 11.43 m)

Armament:
      8 - 16.93" / 430 mm 47.0 cal guns - 2,535.32lbs / 1,150.00kg shells, 100 per gun
	  Breech loading guns in turret on barbette mounts, 1920 Model
	  2 x 3-gun mounts on centreline ends, evenly spread
	  1 x 2-gun mount on centreline, forward deck forward
		1 raised mount
      12 - 6.30" / 160 mm 50.0 cal guns - 132.30lbs / 60.01kg shells, 225 per gun
	  Quick firing guns in turret on barbette mounts, 1920 Model
	  4 x Triple mounts on sides, evenly spread
      12 - 3.15" / 80.0 mm 60.0 cal guns - 17.64lbs / 8.00kg shells, 200 per gun
	  Quick firing guns in deck and hoist mounts, 1926 Model
	  4 x Triple mounts on sides, evenly spread
		4 raised mounts
      16 - 0.79" / 20.0 mm 70.0 cal guns - 0.33lbs / 0.15kg shells, 500 per gun
	  Anti-air guns in deck mounts, 1918 Model
	  4 x 2 row quad mounts on sides, evenly spread
      Weight of broadside 22,087 lbs / 10,019 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	15.0" / 380 mm	583.99 ft / 178.00 m	12.30 ft / 3.75 m
	Ends:	4.92" / 125 mm	301.84 ft / 92.00 m	12.30 ft / 3.75 m
	Upper:	3.94" / 100 mm	583.99 ft / 178.00 m	8.01 ft / 2.44 m
	  Main Belt covers 101 % of normal length
	  Main Belt inclined -15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
		2.76" / 70 mm	583.99 ft / 178.00 m	33.43 ft / 10.19 m
	Beam between torpedo bulkheads 72.18 ft / 22.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	17.7" / 450 mm	11.0" / 280 mm		12.6" / 320 mm
	2nd:	5.91" / 150 mm	3.94" / 100 mm		3.94" / 100 mm
	3rd:	2.95" / 75 mm	1.97" / 50 mm		1.97" / 50 mm

   - Armoured deck - multiple decks:
	For and Aft decks: 5.91" / 150 mm
	Forecastle: 0.98" / 25 mm  Quarter deck: 2.95" / 75 mm

   - Conning towers: Forward 15.75" / 400 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 4 shafts, 167,311 shp / 124,814 Kw = 30.00 kts
	Range 10,000nm at 14.00 kts
	Bunker at max displacement = 5,979 tons

Complement:
	1,775 - 2,308

Cost:
	£14.265 million / $57.062 million

Distribution of weights at normal displacement:
	Armament: 4,536 tons, 8.4 %
	   - Guns: 4,536 tons, 8.4 %
	Armour: 19,196 tons, 35.4 %
	   - Belts: 5,944 tons, 11.0 %
	   - Torpedo bulkhead: 1,991 tons, 3.7 %
	   - Armament: 4,413 tons, 8.1 %
	   - Armour Deck: 6,362 tons, 11.7 %
	   - Conning Tower: 486 tons, 0.9 %
	Machinery: 5,432 tons, 10.0 %
	Hull, fittings & equipment: 18,876 tons, 34.8 %
	Fuel, ammunition & stores: 5,756 tons, 10.6 %
	Miscellaneous weights: 400 tons, 0.7 %
	   - Hull above water: 200 tons
	   - Above deck: 200 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  72,511 lbs / 32,891 Kg = 29.9 x 16.9 " / 430 mm shells or 11.1 torpedoes
	Stability (Unstable if below 1.00): 1.05
	Metacentric height 5.9 ft / 1.8 m
	Roll period: 18.1 seconds
	Steadiness	- As gun platform (Average = 50 %): 60 %
			- Recoil effect (Restricted arc if above 1.00): 0.85
	Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
	Hull has a flush deck,
	  an extended bulbous bow and a round stern
	Block coefficient (normal/deep): 0.565 / 0.571
	Length to Beam Ratio: 8.44 : 1
	'Natural speed' for length: 29.76 kts
	Power going to wave formation at top speed: 47 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 4.00 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 %,  29.53 ft / 9.00 m,  26.25 ft / 8.00 m
	   - Forward deck:	30.00 %,  26.25 ft / 8.00 m,  22.97 ft / 7.00 m
	   - Aft deck:	35.00 %,  22.97 ft / 7.00 m,  22.97 ft / 7.00 m
	   - Quarter deck:	15.00 %,  22.97 ft / 7.00 m,  22.97 ft / 7.00 m
	   - Average freeboard:		24.38 ft / 7.43 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 101.0 %
		- Above water (accommodation/working, high = better): 167.6 %
	Waterplane Area: 65,834 Square feet or 6,116 Square metres
	Displacement factor (Displacement / loading): 106 %
	Structure weight / hull surface area: 216 lbs/sq ft or 1,056 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.98
		- Longitudinal: 1.13
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Good seaboat, rides out heavy weather easily