Ren Bi-Class Coastal Defense Ship [1895] (Taishe)

Ren Bi-Class, Taishe Dynasty Coastal Defense ship laid down 1895

Displacement:
	7,503 t light; 8,000 t standard; 8,774 t normal; 9,393 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(344.49 ft / 328.08 ft) x 82.02 ft x (22.97 / 24.18 ft)
	(105.00 m / 100.00 m) x 25.00 m  x (7.00 / 7.37 m)

Armament:
      2 - 14.17" / 360 mm 33.0 cal guns - 1,274.51lbs / 578.11kg shells, 70 per gun
	  Breech loading guns in turret on barbette mount, 1885 Model
	  1 x Twin mount on centreline, forward deck centre
      14 - 5.91" / 150 mm 47.0 cal guns - 107.12lbs / 48.59kg shells, 225 per gun
	  Quick firing guns in casemate mounts, 1894 Model
	  14 x Single mounts on sides, aft evenly spread
		8 hull mounts in casemates- Limited use in any sea
      12 - 2.95" / 75.0 mm 45.0 cal guns - 12.99lbs / 5.89kg shells, 300 per gun
	  Quick firing guns in deck mounts, 1894 Model
	  12 x Single mounts on sides, aft evenly spread
		12 raised mounts
      16 - 1.46" / 37.0 mm 30.0 cal guns - 1.42lbs / 0.65kg shells, 750 per gun
	  Quick firing guns in deck mounts, 1890 Model
	  4 x 2 row quad mounts on centreline, evenly spread
		4 double raised mounts
      Weight of broadside 4,227 lbs / 1,917 kg
      Main Torpedoes
      2 - 15.7" / 400 mm, 13.12 ft / 4.00 m torpedoes - 0.315 t each, 0.630 t total
	submerged bow & stern tubes
      2nd Torpedoes
      2 - 15.7" / 400 mm, 13.12 ft / 4.00 m torpedoes - 0.315 t each, 0.630 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	12.2" / 310 mm	213.25 ft / 65.00 m	10.86 ft / 3.31 m
	Ends:	3.94" / 100 mm	114.80 ft / 34.99 m	10.86 ft / 3.31 m
	Upper:	3.94" / 100 mm	213.25 ft / 65.00 m	8.01 ft / 2.44 m
	  Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		2.95" / 75 mm	213.25 ft / 65.00 m	20.14 ft / 6.14 m
	Beam between torpedo bulkheads 65.62 ft / 20.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	12.6" / 320 mm	7.87" / 200 mm		5.91" / 150 mm
	2nd:	5.91" / 150 mm	0.98" / 25 mm		5.91" / 150 mm
	3rd:	2.95" / 75 mm	0.98" / 25 mm		      -
	4th:	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 9.84" / 250 mm, Aft 0.00" / 0 mm

Machinery:
	Coal fired boilers, complex reciprocating steam engines,
	Direct drive, 4 shafts, 5,421 ihp / 4,044 Kw = 15.00 kts
	Range 2,000nm at 15.00 kts
	Bunker at max displacement = 1,393 tons (100% coal)

Complement:
	453 - 589

Cost:
	£0.648 million / $2.594 million

Distribution of weights at normal displacement:
	Armament: 619 tons, 7.1 %
	   - Guns: 617 tons, 7.0 %
	   - Weapons: 2 tons, 0.0 %
	Armour: 3,604 tons, 41.1 %
	   - Belts: 1,826 tons, 20.8 %
	   - Torpedo bulkhead: 469 tons, 5.3 %
	   - Armament: 562 tons, 6.4 %
	   - Armour Deck: 656 tons, 7.5 %
	   - Conning Tower: 90 tons, 1.0 %
	Machinery: 919 tons, 10.5 %
	Hull, fittings & equipment: 2,210 tons, 25.2 %
	Fuel, ammunition & stores: 1,271 tons, 14.5 %
	Miscellaneous weights: 150 tons, 1.7 %
	   - On freeboard deck: 50 tons
	   - Above deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  15,592 lbs / 7,072 Kg = 11.0 x 14.2 " / 360 mm shells or 16.5 torpedoes
	Stability (Unstable if below 1.00): 1.73
	Metacentric height 9.2 ft / 2.8 m
	Roll period: 11.4 seconds
	Steadiness	- As gun platform (Average = 50 %): 94 %
			- Recoil effect (Restricted arc if above 1.00): 0.17
	Seaboat quality  (Average = 1.00): 1.88

Hull form characteristics:
	Hull has a flush deck,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.497 / 0.505
	Length to Beam Ratio: 4.00 : 1
	'Natural speed' for length: 18.11 kts
	Power going to wave formation at top speed: 44 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): -10.00 degrees
	Stern overhang: 6.56 ft / 2.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  18.04 ft / 5.50 m,  14.76 ft / 4.50 m
	   - Forward deck:	30.00 %,  14.76 ft / 4.50 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:		12.89 ft / 3.93 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 79.3 %
		- Above water (accommodation/working, high = better): 92.0 %
	Waterplane Area: 17,879 Square feet or 1,661 Square metres
	Displacement factor (Displacement / loading): 109 %
	Structure weight / hull surface area: 128 lbs/sq ft or 623 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.89
		- Longitudinal: 2.85
		- Overall: 1.00
	Excellent 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