Jongfei-Class Seaplane Tender [1920] (Taishe)

Jongfei, Taishe Dynasty Seaplane Tender laid down 1920

Displacement:
	8,056 t light; 8,320 t standard; 8,908 t normal; 9,379 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(596.20 ft / 590.55 ft) x 59.06 ft x (16.40 / 17.08 ft)
	(181.72 m / 180.00 m) x 18.00 m  x (5.00 / 5.21 m)

Armament:
      8 - 5.91" / 150 mm 50.0 cal guns - 110.23lbs / 50.00kg shells, 175 per gun
	  Quick firing guns in deck mounts, 1914 Model
	  8 x Single mounts on sides, evenly spread
		8 hull mounts in casemates- Limited use in heavy seas
      8 - 0.79" / 20.0 mm 70.0 cal guns - 0.27lbs / 0.12kg shells, 500 per gun
	  Anti-air guns in deck mounts, 1918 Model
	  8 x Single mounts on sides, evenly spread
		8 hull mounts in casemates- Limited use in heavy seas
      Weight of broadside 884 lbs / 401 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	7.87" / 200 mm	383.86 ft / 117.00 m	9.22 ft / 2.81 m
	Ends:	3.94" / 100 mm	206.66 ft / 62.99 m	9.22 ft / 2.81 m
	Upper:	3.94" / 100 mm	383.86 ft / 117.00 m	8.01 ft / 2.44 m
	  Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		1.97" / 50 mm	383.86 ft / 117.00 m	15.06 ft / 4.59 m
	Beam between torpedo bulkheads 32.81 ft / 10.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	5.91" / 150 mm	3.94" / 100 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 3.94" / 100 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 4 shafts, 5,139 shp / 3,834 Kw = 15.00 kts
	Range 10,000nm at 10.00 kts
	Bunker at max displacement = 1,059 tons

Complement:
	458 - 596

Cost:
	£0.835 million / $3.341 million

Distribution of weights at normal displacement:
	Armament: 166 tons, 1.9 %
	   - Guns: 166 tons, 1.9 %
	Armour: 3,520 tons, 39.5 %
	   - Belts: 1,920 tons, 21.6 %
	   - Torpedo bulkhead: 421 tons, 4.7 %
	   - Armament: 252 tons, 2.8 %
	   - Armour Deck: 889 tons, 10.0 %
	   - Conning Tower: 36 tons, 0.4 %
	Machinery: 180 tons, 2.0 %
	Hull, fittings & equipment: 2,590 tons, 29.1 %
	Fuel, ammunition & stores: 853 tons, 9.6 %
	Miscellaneous weights: 1,600 tons, 18.0 %
	   - On freeboard deck: 1,500 tons
	   - Above deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  79,268 lbs / 35,956 Kg = 769.8 x 5.9 " / 150 mm shells or 34.2 torpedoes
	Stability (Unstable if below 1.00): 1.09
	Metacentric height 2.7 ft / 0.8 m
	Roll period: 15.2 seconds
	Steadiness	- As gun platform (Average = 50 %): 77 %
			- Recoil effect (Restricted arc if above 1.00): 0.07
	Seaboat quality  (Average = 1.00): 1.54

Hull form characteristics:
	Hull has a flush deck,
	  a straight bulbous bow and a round stern
	Block coefficient (normal/deep): 0.545 / 0.551
	Length to Beam Ratio: 10.00 : 1
	'Natural speed' for length: 24.30 kts
	Power going to wave formation at top speed: 20 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 5.00 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 %,  27.07 ft / 8.25 m,  21.33 ft / 6.50 m
	   - Forward deck:	30.00 %,  21.33 ft / 6.50 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:		18.59 ft / 5.67 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 24.8 %
		- Above water (accommodation/working, high = better): 176.7 %
	Waterplane Area: 24,225 Square feet or 2,251 Square metres
	Displacement factor (Displacement / loading): 150 %
	Structure weight / hull surface area: 86 lbs/sq ft or 418 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 1.10
		- Longitudinal: 0.96
		- Overall: 1.00
	Excellent 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

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-100 Tons of Additional Weight Above Deck:
	-Flag Facilities (100 Tons)

-1500 Tons of Additional Weight On Deck:
	-30 Seaplanes and Accompanying Hangars (30*50=1500)