1884-Class CDS, 1900 Refit [1900] (Calder)

1884-Class CDS (1900 Refit), Calder Republic Coastal Defense Ship laid down 1884

Displacement:
	5,688 t light; 6,000 t standard; 6,862 t normal; 7,552 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(267.39 ft / 262.47 ft) x 72.18 ft x (16.40 / 17.89 ft)
	(81.50 m / 80.00 m) x 22.00 m  x (5.00 / 5.45 m)

Armament:
      3 - 10.24" / 260 mm 35.0 cal guns - 483.63lbs / 219.37kg shells, 80 per gun
	  Breech loading guns in turret on barbette mounts, 1885 Model
	  1 x Single mount on centreline, aft deck aft
	  1 x Twin mount on centreline, forward deck forward
      16 - 5.12" / 130 mm 47.0 cal guns - 69.73lbs / 31.63kg shells, 175 per gun
	  Quick firing guns in casemate mounts, 1900 Model
	  16 x Single mounts on sides, evenly spread
      2 - 2.95" / 75.0 mm 40.0 cal guns - 12.34lbs / 5.60kg shells, 150 per gun
	  Quick firing guns in deck mounts, 1892 Model
	  2 x Single mounts on sides amidships
		2 raised mounts
      Weight of broadside 2,591 lbs / 1,175 kg

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	9.45" / 240 mm	170.60 ft / 52.00 m	10.20 ft / 3.11 m
	Ends:	1.97" / 50 mm	  91.83 ft / 27.99 m	10.20 ft / 3.11 m
	Upper:	1.97" / 50 mm	170.60 ft / 52.00 m	8.01 ft / 2.44 m
	  Main Belt covers 100 % of normal length
	  Main Belt inclined 15.00 degrees (positive = in)

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		0.98" / 25 mm	170.60 ft / 52.00 m	16.14 ft / 4.92 m
	Beam between torpedo bulkheads 68.90 ft / 21.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	7.87" / 200 mm	5.91" / 150 mm		5.91" / 150 mm
	2nd:	1.97" / 50 mm	      -			5.91" / 150 mm
	3rd:	0.49" / 13 mm	      -			      -

   - Armoured deck - multiple decks:
	For and Aft decks: 1.97" / 50 mm
	Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm

Machinery:
	Coal fired boilers, complex reciprocating steam engines,
	Direct drive, 2 shafts, 6,157 ihp / 4,593 Kw = 15.00 kts
	Range 5,000nm at 10.00 kts
	Bunker at max displacement = 1,551 tons (100% coal)

Complement:
	376 - 490

Cost:
	£0.531 million / $2.122 million

Distribution of weights at normal displacement:
	Armament: 439 tons, 6.4 %
	   - Guns: 439 tons, 6.4 %
	Armour: 2,090 tons, 30.5 %
	   - Belts: 1,034 tons, 15.1 %
	   - Torpedo bulkhead: 100 tons, 1.5 %
	   - Armament: 341 tons, 5.0 %
	   - Armour Deck: 538 tons, 7.8 %
	   - Conning Tower: 77 tons, 1.1 %
	Machinery: 1,210 tons, 17.6 %
	Hull, fittings & equipment: 1,924 tons, 28.0 %
	Fuel, ammunition & stores: 1,174 tons, 17.1 %
	Miscellaneous weights: 25 tons, 0.4 %
	   - On freeboard deck: 25 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  9,616 lbs / 4,362 Kg = 19.7 x 10.2 " / 260 mm shells or 2.2 torpedoes
	Stability (Unstable if below 1.00): 1.94
	Metacentric height 8.8 ft / 2.7 m
	Roll period: 10.2 seconds
	Steadiness	- As gun platform (Average = 50 %): 61 %
			- Recoil effect (Restricted arc if above 1.00): 0.12
	Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
	Hull has raised forecastle,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.773 / 0.780
	Length to Beam Ratio: 3.64 : 1
	'Natural speed' for length: 16.20 kts
	Power going to wave formation at top speed: 56 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 0.00 degrees
	Stern overhang: 0.00 ft / 0.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	20.00 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
	   - Forward deck:	30.00 %,  11.48 ft / 3.50 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:		12.14 ft / 3.70 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 84.1 %
		- Above water (accommodation/working, high = better): 94.4 %
	Waterplane Area: 16,232 Square feet or 1,508 Square metres
	Displacement factor (Displacement / loading): 113 %
	Structure weight / hull surface area: 114 lbs/sq ft or 557 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.90
		- Longitudinal: 2.50
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Adequate accommodation and workspace room
	Good seaboat, rides out heavy weather easily