E90-Class Torpedoboat [1890] (Seondok)

E90-Class, Seondok County Torpedoboat laid down 1890

Displacement:
	308 t light; 320 t standard; 332 t normal; 342 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(165.68 ft / 164.04 ft) x 16.40 ft x (6.56 / 6.73 ft)
	(50.50 m / 50.00 m) x 5.00 m  x (2.00 / 2.05 m)

Armament:
      4 - 2.13" / 54.0 mm 15.0 cal guns - 4.26lbs / 1.93kg shells, 500 per gun
	  Breech loading guns in deck mounts, 1890 Model
	  2 x Twin mounts on centreline, evenly spread
		2 raised mounts
      Weight of broadside 17 lbs / 8 kg
      Main Torpedoes
      3 - 19.7" / 500 mm, 9.84 ft / 3.00 m torpedoes - 0.304 t each, 0.913 t total
	In 3 sets of deck mounted centre rotating tubes
      2nd Torpedoes
      2 - 19.7" / 500 mm, 9.84 ft / 3.00 m torpedoes - 0.304 t each, 0.609 t total
	In 2 sets of deck mounted side rotating tubes

Armour:
   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	0.98" / 25 mm	0.49" / 13 mm		      -

Machinery:
	Coal fired boilers, complex reciprocating steam engines,
	Direct drive, 2 shafts, 2,573 ihp / 1,920 Kw = 24.00 kts
	Range 500nm at 10.00 kts
	Bunker at max displacement = 22 tons (100% coal)
	  Caution: Delicate, lightweight machinery

Complement:
	38 - 50

Cost:
	£0.037 million / $0.149 million

Distribution of weights at normal displacement:
	Armament: 4 tons, 1.2 %
	   - Guns: 1 tons, 0.3 %
	   - Weapons: 3 tons, 0.9 %
	Armour: 6 tons, 1.8 %
	   - Armament: 6 tons, 1.8 %
	Machinery: 187 tons, 56.3 %
	Hull, fittings & equipment: 112 tons, 33.6 %
	Fuel, ammunition & stores: 24 tons, 7.1 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  117 lbs / 53 Kg = 24.4 x 2.1 " / 54 mm shells or 0.6 torpedoes
	Stability (Unstable if below 1.00): 1.22
	Metacentric height 0.5 ft / 0.1 m
	Roll period: 10.0 seconds
	Steadiness	- As gun platform (Average = 50 %): 44 %
			- Recoil effect (Restricted arc if above 1.00): 0.19
	Seaboat quality  (Average = 1.00): 0.76

Hull form characteristics:
	Hull has raised forecastle,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.658 / 0.661
	Length to Beam Ratio: 10.00 : 1
	'Natural speed' for length: 12.81 kts
	Power going to wave formation at top speed: 66 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): -13.00 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 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
	   - Forward deck:	30.00 %,  6.56 ft / 2.00 m,  6.56 ft / 2.00 m
	   - Aft deck:	35.00 %,  6.56 ft / 2.00 m,  6.56 ft / 2.00 m
	   - Quarter deck:	15.00 %,  6.56 ft / 2.00 m,  6.56 ft / 2.00 m
	   - Average freeboard:		7.22 ft / 2.20 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 184.0 %
		- Above water (accommodation/working, high = better): 49.3 %
	Waterplane Area: 2,077 Square feet or 193 Square metres
	Displacement factor (Displacement / loading): 35 %
	Structure weight / hull surface area: 29 lbs/sq ft or 139 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.92
		- Longitudinal: 2.30
		- Overall: 1.00
	Cramped machinery, storage, compartmentation space
	Extremely poor accommodation and workspace room
	Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

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Based on the Mousquetaire-Class Torpedoboat and Kotaka. Actual speed is 24 knots; inputted hp is 2,182hp.