Gossamer-Class Battlecruiser [1905] (Mazantsi)

Gossamer-Class, Mazantsi Dominion Battlecruiser laid down 1905

Displacement:
	18,007 t light; 18,850 t standard; 21,100 t normal; 22,900 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(570.00 ft / 570.00 ft) x 84.00 ft x (28.00 / 29.88 ft)
	(173.74 m / 173.74 m) x 25.60 m  x (8.53 / 9.11 m)

Armament:
      8 - 12.00" / 305 mm 45.0 cal guns - 871.38lbs / 395.25kg shells, 100 per gun
	  Breech loading guns in turret on barbette mounts, 1903 Model
	  2 x Twin mounts on centreline, evenly spread
	  2 x Twin mounts on sides amidships
      18 - 3.00" / 76.2 mm 45.0 cal guns - 13.62lbs / 6.18kg shells, 250 per gun
	  Quick firing guns in deck mounts, 1904 Model
	  18 x Single mounts on sides, evenly spread
		18 raised mounts
      Weight of broadside 7,216 lbs / 3,273 kg
      Main Torpedoes
      4 - 20.0" / 508 mm, 20.00 ft / 6.10 m torpedoes - 1.053 t each, 4.214 t total
	In 4 sets of deck mounted carriage/fixed tubes
      2nd Torpedoes
      4 - 20.0" / 508 mm, 20.00 ft / 6.10 m torpedoes - 1.053 t each, 4.214 t total
	In 1 sets of deck mounted carriage/fixed tubes

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	7.00" / 178 mm	490.00 ft / 149.35 m	11.00 ft / 3.35 m
	Ends:	2.00" / 51 mm	  80.00 ft / 24.38 m	11.00 ft / 3.35 m
	Upper:	4.00" / 102 mm	490.00 ft / 149.35 m	8.00 ft / 2.44 m
	  Main Belt covers 132 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		2.50" / 64 mm	490.00 ft / 149.35 m	25.79 ft / 7.86 m
	Beam between torpedo bulkheads 70.00 ft / 21.34 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	12.0" / 305 mm	8.00" / 203 mm		6.00" / 152 mm

   - Armoured deck - multiple decks:
	For and Aft decks: 2.00" / 51 mm
	Forecastle: 2.00" / 51 mm  Quarter deck: 2.00" / 51 mm

   - Conning towers: Forward 12.00" / 305 mm, Aft 0.00" / 0 mm

Machinery:
	Coal fired boilers, steam turbines,
	Direct drive, 4 shafts, 63,498 shp / 47,370 Kw = 26.00 kts
	Range 9,000nm at 10.00 kts
	Bunker at max displacement = 4,050 tons (100% coal)

Complement:
	874 - 1,137

Cost:
	£2.034 million / $8.136 million

Distribution of weights at normal displacement:
	Armament: 1,296 tons, 6.1 %
	   - Guns: 1,285 tons, 6.1 %
	   - Weapons: 11 tons, 0.0 %
	Armour: 5,889 tons, 27.9 %
	   - Belts: 2,229 tons, 10.6 %
	   - Torpedo bulkhead: 1,169 tons, 5.5 %
	   - Armament: 1,047 tons, 5.0 %
	   - Armour Deck: 1,247 tons, 5.9 %
	   - Conning Tower: 197 tons, 0.9 %
	Machinery: 5,292 tons, 25.1 %
	Hull, fittings & equipment: 5,430 tons, 25.7 %
	Fuel, ammunition & stores: 3,093 tons, 14.7 %
	Miscellaneous weights: 100 tons, 0.5 %
	   - Above deck: 100 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  18,825 lbs / 8,539 Kg = 21.8 x 12.0 " / 305 mm shells or 3.5 torpedoes
	Stability (Unstable if below 1.00): 1.36
	Metacentric height 6.6 ft / 2.0 m
	Roll period: 13.7 seconds
	Steadiness	- As gun platform (Average = 50 %): 62 %
			- Recoil effect (Restricted arc if above 1.00): 0.41
	Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
	Hull has a flush deck,
	  a normal bow and a cruiser stern
	Block coefficient (normal/deep): 0.551 / 0.560
	Length to Beam Ratio: 6.79 : 1
	'Natural speed' for length: 23.87 kts
	Power going to wave formation at top speed: 54 %
	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 %,  27.50 ft / 8.38 m,  22.50 ft / 6.86 m
	   - Forward deck:	30.00 %,  22.50 ft / 6.86 m,  17.50 ft / 5.33 m
	   - Aft deck:	35.00 %,  17.50 ft / 5.33 m,  17.50 ft / 5.33 m
	   - Quarter deck:	15.00 %,  17.50 ft / 5.33 m,  17.50 ft / 5.33 m
	   - Average freeboard:		19.65 ft / 5.99 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 131.7 %
		- Above water (accommodation/working, high = better): 134.9 %
	Waterplane Area: 33,442 Square feet or 3,107 Square metres
	Displacement factor (Displacement / loading): 92 %
	Structure weight / hull surface area: 145 lbs/sq ft or 710 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.95
		- Longitudinal: 1.61
		- Overall: 1.00
	Cramped machinery, storage, compartmentation space
	Excellent accommodation and workspace room
	Good seaboat, rides out heavy weather easily