Jiangren-Class Torpedoboat [1890] (Taishe)

Jiangren-Class, Taishe Dynasty Torpedoboat laid down 1890

NOTE: Given SS's incapability of handling destroyers, these are rough estimates with tweaks made to speed in SS vs IRL speed equivalents (hp was used for reference). They are not made in SS proper.

Displacement:
	276 t light; 286 t standard; 331 t normal; 366 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(172.61 ft / 170.60 ft) x 19.69 ft x (8.20 / 8.80 ft)
	(52.61 m / 52.00 m) x 6.00 m  x (2.50 / 2.68 m)

Armament:
      2 - 2.91" / 74.0 mm 40.0 cal guns - 11.12lbs / 5.04kg shells, 50 per gun
	  Quick firing guns in deck mounts, 1882 Model
	  2 x Single mounts on sides, forward deck forward
      8 - 1.46" / 37.0 mm 30.0 cal guns - 1.42lbs / 0.64kg shells, 500 per gun
	  Quick firing guns in deck mount, 1890 Model
	  1 x 2 row octuple mount on centreline, forward deck forward
      Weight of broadside 34 lbs / 15 kg
      Main Torpedoes
      3 - 15.0" / 380 mm, 6.56 ft / 2.00 m torpedoes - 0.117 t each, 0.352 t total
	In 3 sets of deck mounted centre rotating tubes
      2nd Torpedoes
      9 - 15.0" / 380 mm, 6.56 ft / 2.00 m torpedoes - 0.117 t each, 1.055 t total
	below water reloads

Machinery:
	Coal fired boilers, complex reciprocating steam engines,
	Direct drive, 2 shafts, 1,312 ihp / 978 Kw = 21.00 kts
	Range 500nm at 21.00 kts
	Bunker at max displacement = 80 tons (100% coal)

Complement:
	38 - 50

Cost:
	£0.035 million / $0.139 million

Distribution of weights at normal displacement:
	Armament: 8 tons, 2.4 %
	   - Guns: 6 tons, 1.7 %
	   - Weapons: 2 tons, 0.6 %
	Machinery: 169 tons, 51.0 %
	Hull, fittings & equipment: 101 tons, 30.6 %
	Fuel, ammunition & stores: 55 tons, 16.6 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  130 lbs / 59 Kg = 10.5 x 2.9 " / 74 mm shells or 1.7 torpedoes
	Stability (Unstable if below 1.00): 1.60
	Metacentric height 1.0 ft / 0.3 m
	Roll period: 8.4 seconds
	Steadiness	- As gun platform (Average = 50 %): 49 %
			- Recoil effect (Restricted arc if above 1.00): 0.06
	Seaboat quality  (Average = 1.00): 0.97

Hull form characteristics:
	Hull has a flush deck,
	  a normal bow and a round stern
	Block coefficient (normal/deep): 0.420 / 0.434
	Length to Beam Ratio: 8.67 : 1
	'Natural speed' for length: 13.06 kts
	Power going to wave formation at top speed: 52 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 4.00 degrees
	Stern overhang: 1.64 ft / 0.50 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  5.25 ft / 1.60 m,  4.92 ft / 1.50 m
	   - Forward deck:	30.00 %,  4.92 ft / 1.50 m,  4.92 ft / 1.50 m
	   - Aft deck:	35.00 %,  4.92 ft / 1.50 m,  4.92 ft / 1.50 m
	   - Quarter deck:	15.00 %,  4.92 ft / 1.50 m,  4.92 ft / 1.50 m
	   - Average freeboard:		4.95 ft / 1.51 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 174.6 %
		- Above water (accommodation/working, high = better): 41.9 %
	Waterplane Area: 2,094 Square feet or 195 Square metres
	Displacement factor (Displacement / loading): 66 %
	Structure weight / hull surface area: 31 lbs/sq ft or 152 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.96
		- Longitudinal: 1.43
		- Overall: 1.00
	Cramped machinery, storage, compartmentation space
	Extremely poor accommodation and workspace room
	Poor seaboat, wet and uncomfortable, reduced performance in heavy weather