An extreme version of the GB/CB/1905 design

This is extreme, as it uses high power output machinery (38.7 SHP/ton). The ship is faster and better protected, thanks to having lighter-weight machinery. I left the dimensions and armament as originally conceived by my friend Cliff, in 1971, so it still has 4-12in BLR and 9-6in QF. I was able to increase the armor belt to the 6in that David K. Brown had recommended to me. I also incorporated heavier barbette and turret armor, more like what I had hoped for in my 1973 recalculations. Here is the report, showing what can be done with Springsharp:

GB/CB/1905 fast, Great Britain Enter ship type laid down 1905 (Engine 1943)

Displacement:
	24,145 t light; 24,909 t standard; 26,709 t normal; 28,150 t full load

Dimensions: Length overall / water x beam x draught
	770.00 ft / 770.00 ft x 85.00 ft x 27.00 ft (normal load)
	234.70 m / 234.70 m x 25.91 m  x 8.23 m

Armament:
      4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1905 Model
	  Breech loading guns in turrets (on barbettes)
	  on centreline ends, evenly spread, all raised mounts
      9 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1905 Model
	  Quick firing guns in deck mounts with hoists
	  on side ends, majority aft, all raised mounts - superfiring
	Weight of broadside 4,428 lbs / 2,009 kg
	Shells per gun, main battery: 90

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	6.00" / 152 mm	580.00 ft / 176.78 m	17.00 ft / 5.18 m
	Ends:	Unarmoured
	  Main Belt covers 116 % of normal length

   - Torpedo Bulkhead:
		1.50" / 38 mm	580.00 ft / 176.78 m	25.00 ft / 7.62 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	10.0" / 254 mm	6.00" / 152 mm		9.00" / 229 mm
	2nd:	2.00" / 51 mm	      -			      -

   - Armour deck: 3.00" / 76 mm, Conning tower: 8.00" / 203 mm

Machinery:
	Oil fired boilers, steam turbines, 
	Direct drive, 4 shafts, 230,373 shp / 171,858 Kw = 36.00 kts
	Range 8,500nm at 15.00 kts
	Bunker at max displacement = 3,241 tons

Complement:
	1,044 - 1,358

Cost:
	£2.143 million / $8.572 million

Distribution of weights at normal displacement:
	Armament: 554 tons, 2.1 %
	Armour: 6,999 tons, 26.2 %
	   - Belts: 2,428 tons, 9.1 %
	   - Torpedo bulkhead: 805 tons, 3.0 %
	   - Armament: 1,126 tons, 4.2 %
	   - Armour Deck: 2,486 tons, 9.3 %
	   - Conning Tower: 154 tons, 0.6 %
	Machinery: 5,950 tons, 22.3 %
	Hull, fittings & equipment: 10,643 tons, 39.8 %
	Fuel, ammunition & stores: 2,564 tons, 9.6 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  33,665 lbs / 15,270 Kg = 39.0 x 12.0 " / 305 mm shells or 4.4 torpedoes
	Stability (Unstable if below 1.00): 1.12
	Metacentric height 4.9 ft / 1.5 m
	Roll period: 16.2 seconds
	Steadiness	- As gun platform (Average = 50 %): 56 %
			- Recoil effect (Restricted arc if above 1.00): 0.42
	Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
	Hull has rise forward of midbreak
	Block coefficient: 0.529
	Length to Beam Ratio: 9.06 : 1
	'Natural speed' for length: 27.75 kts
	Power going to wave formation at top speed: 58 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): -2.00 degrees
	Stern overhang: -2.00 ft / -0.61 m
	Freeboard (% = measuring location as a percentage of overall length):
	   - Stem:		33.00 ft / 10.06 m
	   - Forecastle (67 %):	31.00 ft / 9.45 m
	   - Mid (67 %):		31.00 ft / 9.45 m (23.00 ft / 7.01 m aft of break)
	   - Quarterdeck (15 %):	23.00 ft / 7.01 m
	   - Stern:		23.00 ft / 7.01 m
	   - Average freeboard:	28.90 ft / 8.81 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 115.4 %
		- Above water (accommodation/working, high = better): 187.9 %
	Waterplane Area: 44,789 Square feet or 4,161 Square metres
	Displacement factor (Displacement / loading): 115 %
	Structure weight / hull surface area: 149 lbs/sq ft or 727 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.96
		- Longitudinal: 1.48
		- Overall: 1.00
	Hull space for machinery, storage, compartmentation is cramped
	Room for accommodation and workspaces is excellent