1910 USN Concord - RFP 126

Concord, USA Battlecruiser laid down 1910

Displacement:
	23,685 t light; 25,241 t standard; 28,677 t normal; 31,426 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(710.00 ft / 700.00 ft) x 79.00 ft x (30.00 / 32.37 ft)
	(216.41 m / 213.36 m) x 24.08 m  x (9.14 / 9.87 m)

Armament:
      6 - 16.00" / 406 mm 35.0 cal guns - 2,400.00lbs / 1,088.62kg shells, 90 per gun
	  Breech loading guns in turret on barbette mounts, 1895 Model
	  2 x Twin mounts on centreline, forward evenly spread
	  1 x Twin mount on centreline, aft deck centre
      6 - 6.00" / 152 mm 49.0 cal guns - 105.01lbs / 47.63kg shells, 250 per gun
	  Breech loading guns in deck and hoist mounts, 1910 Model
	  4 x Single mounts on centreline, forward evenly spread
		4 raised mounts
	  2 x Single mounts on centreline, forward evenly spread
		2 double raised mounts
      12 - 6.00" / 152 mm 49.0 cal guns - 105.01lbs / 47.63kg shells, 250 per gun
	  Breech loading guns in casemate mounts, 1910 Model
	  12 x Single mounts on sides, forward evenly spread
      Weight of broadside 16,290 lbs / 7,389 kg
      Main Torpedoes
      40 - 21.0" / 533 mm, 16.42 ft / 5.00 m torpedoes - 1.051 t each, 42.046 t total
	submerged side tubes
      2nd Torpedoes
      80 - 21.0" / 533 mm, 16.42 ft / 5.00 m torpedoes - 1.051 t each, 84.091 t total
	below water reloads

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	12.0" / 305 mm	490.00 ft / 149.35 m	8.00 ft / 2.44 m
	Ends:	Unarmoured
	Upper:	9.00" / 229 mm	490.00 ft / 149.35 m	8.00 ft / 2.44 m
	  Main Belt covers 108 % of normal length
	  Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		1.50" / 38 mm	490.00 ft / 149.35 m	28.65 ft / 8.73 m
	Beam between torpedo bulkheads 69.00 ft / 21.03 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	12.0" / 305 mm	4.00" / 102 mm		12.0" / 305 mm
	2nd:	1.00" / 25 mm	1.00" / 25 mm		4.00" / 102 mm
	3rd:	6.00" / 152 mm	2.00" / 51 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 and oil fired boilers, complex reciprocating steam engines,
	Direct drive, 6 shafts, 81,716 ihp / 60,960 Kw = 27.00 kts
	Range 12,500nm at 12.00 kts
	Bunker at max displacement = 6,184 tons (40% coal)

Complement:
	1,101 - 1,432

Cost:
	£2.524 million / $10.097 million

Distribution of weights at normal displacement:
	Armament: 2,061 tons, 7.2 %
	   - Guns: 1,872 tons, 6.5 %
	   - Weapons: 189 tons, 0.7 %
	Armour: 7,639 tons, 26.6 %
	   - Belts: 3,396 tons, 11.8 %
	   - Torpedo bulkhead: 779 tons, 2.7 %
	   - Armament: 1,705 tons, 5.9 %
	   - Armour Deck: 1,516 tons, 5.3 %
	   - Conning Tower: 242 tons, 0.8 %
	Machinery: 5,139 tons, 17.9 %
	Hull, fittings & equipment: 8,816 tons, 30.7 %
	Fuel, ammunition & stores: 4,992 tons, 17.4 %
	Miscellaneous weights: 30 tons, 0.1 %
	   - Above deck: 30 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  27,798 lbs / 12,609 Kg = 13.6 x 16.0 " / 406 mm shells or 4.1 torpedoes
	Stability (Unstable if below 1.00): 1.17
	Metacentric height 4.7 ft / 1.4 m
	Roll period: 15.3 seconds
	Steadiness	- As gun platform (Average = 50 %): 55 %
			- Recoil effect (Restricted arc if above 1.00): 1.04
	Seaboat quality  (Average = 1.00): 1.10

Hull form characteristics:
	Hull has rise forward of midbreak,
	  a ram bow and a cruiser stern
	Block coefficient (normal/deep): 0.605 / 0.614
	Length to Beam Ratio: 8.86 : 1
	'Natural speed' for length: 26.46 kts
	Power going to wave formation at top speed: 48 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 0.00 degrees
	Stern overhang: -3.00 ft / -0.91 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	15.00 %,  20.00 ft / 6.10 m,  20.00 ft / 6.10 m
	   - Forward deck:	50.00 %,  20.00 ft / 6.10 m,  20.00 ft / 6.10 m
	   - Aft deck:	20.00 %,  12.00 ft / 3.66 m,  12.00 ft / 3.66 m
	   - Quarter deck:	15.00 %,  12.00 ft / 3.66 m,  12.00 ft / 3.66 m
	   - Average freeboard:		17.20 ft / 5.24 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 109.3 %
		- Above water (accommodation/working, high = better): 124.5 %
	Waterplane Area: 40,635 Square feet or 3,775 Square metres
	Displacement factor (Displacement / loading): 105 %
	Structure weight / hull surface area: 172 lbs/sq ft or 842 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.98
		- Longitudinal: 1.19
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Excellent accommodation and workspace room

16"/35 M1895 firing 2400lb AP shell 19300yd@20deg, ROF unknown presumably typical of 1910 large naval mounting with welin interrupted-screw breech
3xII turrets AQX
2x gun directors (1 fore, 1 aft)

6"/50 Mk6 firing 105lb AP shell 17000yd@16deg, ROF 6rpm
2nd battery is 6xI with enclosed gunhouses mostly superfiring over AQ turrets
3rd battery is 12xI armoured casemates on deck midships.

Torpedo tubes are Kearsarge-type above-water below-deck side tubes behind upper armour belt.
21" Bliss-Leavitt Mark 3 - 1500lb 197" 218lb guncotton warhead 4000yd@26kn dry-heater

Coal boilers only:
21kn @ 33,300 shp, 3300t coal, 5000nmi@12kn, 1350nmi@21kn
Coal and oil boilers:
27kn @ 85,800 shp, 3300t coal + 3100t oil, 12500nmi@12kn, 3350nmi@21kn, 1650nmi@27kn