No. 1900-Class Gunboat [1900] (Pulau)

No. 1900-Class, Republic of Pulau Gunboat laid down 1900

Displacement:
	258 t light; 270 t standard; 296 t normal; 317 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(181.00 ft / 180.00 ft) x 21.00 ft x (6.00 / 6.31 ft)
	(55.17 m / 54.86 m) x 6.40 m  x (1.83 / 1.92 m)

Armament:
      1 - 5.00" / 127 mm 40.0 cal gun - 59.90lbs / 27.17kg shells, 80 per gun
	  Quick firing gun in deck mounts, 1898 Model
	  2 x Single mounts on centreline, evenly spread
      4 - 3.00" / 76.2 mm 48.0 cal guns - 14.02lbs / 6.36kg shells, 100 per gun
	  Quick firing guns in deck mounts, 1900 Model
	  4 x Single mounts on sides, evenly spread
      2 - 0.50" / 12.7 mm 50.0 cal guns - 0.06lbs / 0.03kg shells, 2,500 per gun
	  Machine guns in deck mounts, 1886 Model
	  2 x Single mounts on centreline, evenly spread
		2 raised mounts
      Weight of broadside 116 lbs / 53 kg
      Main Torpedoes
      2 - 16.0" / 406 mm, 13.12 ft / 4.00 m torpedoes - 0.392 t each, 0.784 t total
	In 2 sets of deck mounted carriage/fixed tubes

Armour:
   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	2.00" / 51 mm	1.00" / 25 mm		      -
	2nd:	0.50" / 13 mm	      -			      -

   - Conning towers: Forward 2.00" / 51 mm, Aft 0.00" / 0 mm

Machinery:
	Coal fired boilers, complex reciprocating steam engines,
	Direct drive, 1 shaft, 751 ihp / 560 Kw = 15.00 kts
	Range 1,500nm at 10.00 kts
	Bunker at max displacement = 47 tons (100% coal)

Complement:
	35 - 46

Cost:
	£0.030 million / $0.122 million

Distribution of weights at normal displacement:
	Armament: 22 tons, 7.3 %
	   - Guns: 21 tons, 7.0 %
	   - Weapons: 1 tons, 0.3 %
	Armour: 22 tons, 7.3 %
	   - Armament: 20 tons, 6.6 %
	   - Conning Tower: 2 tons, 0.6 %
	Machinery: 113 tons, 38.1 %
	Hull, fittings & equipment: 102 tons, 34.5 %
	Fuel, ammunition & stores: 38 tons, 12.7 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  221 lbs / 100 Kg = 3.5 x 5.0 " / 127 mm shells or 0.8 torpedoes
	Stability (Unstable if below 1.00): 1.51
	Metacentric height 1.0 ft / 0.3 m
	Roll period: 8.9 seconds
	Steadiness	- As gun platform (Average = 50 %): 81 %
			- Recoil effect (Restricted arc if above 1.00): 0.31
	Seaboat quality  (Average = 1.00): 1.62

Hull form characteristics:
	Hull has a flush deck,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.457 / 0.464
	Length to Beam Ratio: 8.57 : 1
	'Natural speed' for length: 13.42 kts
	Power going to wave formation at top speed: 45 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): -5.00 degrees
	Stern overhang: -2.00 ft / -0.61 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	10.00 %,  9.25 ft / 2.82 m,  8.00 ft / 2.44 m
	   - Forward deck:	30.00 %,  8.00 ft / 2.44 m,  6.00 ft / 1.83 m
	   - Aft deck:	50.00 %,  6.00 ft / 1.83 m,  6.00 ft / 1.83 m
	   - Quarter deck:	10.00 %,  6.00 ft / 1.83 m,  6.00 ft / 1.83 m
	   - Average freeboard:		6.55 ft / 2.00 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 141.2 %
		- Above water (accommodation/working, high = better): 79.0 %
	Waterplane Area: 2,313 Square feet or 215 Square metres
	Displacement factor (Displacement / loading): 96 %
	Structure weight / hull surface area: 32 lbs/sq ft or 154 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.95
		- Longitudinal: 1.62
		- Overall: 1.00
	Cramped machinery, storage, compartmentation space
	Cramped 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