A super-large battlecruiser

I have been daydreaming about super-large battleships and battlecruisers since at least 1999. As far back as the early 1960's I was making paper models of such ships. In the mid-1960's, my college roommate assured me that such ships couldn't be built, because frictional resistance would be too great (he was in NROTC with a naval architecture student). I just ran Springsharp for my super-large American battlecruiser (1937 technology). The result turned out quite nicely. I felt like I needed to increase hull depth to keep displacement within bounds, so the draft is pretty deep (40 ft). I called this design the US/CB/1937. Springsharp has only superlatives for the design (including a huge cost).

US/CB/1937, United States Battlecruiser laid down 1937

Displacement:
	118,596 t light; 124,261 t standard; 131,950 t normal; 138,101 t full load

Dimensions: Length overall / water x beam x draught
	1,255.10 ft / 1,250.00 ft x 145.00 ft x 40.00 ft (normal load)
	382.55 m / 381.00 m x 44.20 m  x 12.19 m

Armament:
    9 - 21.00" / 533 mm guns (3x3 guns), 4,630.50lbs / 2,100.36kg shells, 1937 Model
	  Breech loading guns in turrets (on barbettes)
	  on centreline ends, majority forward, all raised mounts - superfiring
    24 - 5.10" / 130 mm guns (2x12 guns), 66.33lbs / 30.08kg shells, 1937 Model
	  Dual purpose guns in turrets (on barbettes)
	  on side, all amidships, all raised mounts - superfiring
	Weight of broadside 43,266 lbs / 19,625 kg
	Shells per gun, main battery: 125

Armour:
 - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	16.0" / 406 mm	825.00 ft / 251.46 m	20.00 ft / 6.10 m
	Ends:	Unarmoured
	  Main Belt covers 102 % of normal length

 - Torpedo Bulkhead:
		3.00" / 76 mm	825.00 ft / 251.46 m	36.00 ft / 10.97 m

 - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	18.0" / 457 mm	12.0" / 305 mm		16.0" / 406 mm
	2nd:	4.00" / 102 mm	4.00" / 102 mm		4.00" / 102 mm

 - Armour deck: 8.00" / 203 mm, Conning tower: 12.00" / 305 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 8 shafts, 486,990 shp / 363,294 Kw = 35.00 kts
	Range 12,500nm at 15.00 kts
	Bunker at max displacement = 13,841 tons

Complement:
	3,461 - 4,500

Cost:
	£57.728 million / $230.912 million

Distribution of weights at normal displacement:
	Armament: 5,408 tons, 4.1 %
	Armour: 44,905 tons, 34.0 %
	   - Belts: 11,179 tons, 8.5 %
	   - Torpedo bulkhead: 3,297 tons, 2.5 %
	   - Armament: 9,454 tons, 7.2 %
	   - Armour Deck: 20,305 tons, 15.4 %
	   - Conning Tower: 670 tons, 0.5 %
	Machinery: 13,498 tons, 10.2 %
	Hull, fittings & equipment: 54,785 tons, 41.5 %
	Fuel, ammunition & stores: 13,355 tons, 10.1 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  215,053 lbs / 97,546 Kg = 46.4 x 21.0 " / 533 mm shells or 36.2 torpedoes
	Stability (Unstable if below 1.00): 1.09
	Metacentric height 10.2 ft / 3.1 m
	Roll period: 19.0 seconds
	Steadiness	- As gun platform (Average = 50 %): 67 %
			- Recoil effect (Restricted arc if above 1.00): 0.83
	Seaboat quality  (Average = 1.00): 1.34

Hull form characteristics:
	Hull has a flush deck
	Block coefficient: 0.637
	Length to Beam Ratio: 8.62 : 1
	'Natural speed' for length: 35.36 kts
	Power going to wave formation at top speed: 48 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 3.00 degrees
	Stern overhang: 3.00 ft / 0.91 m
	Freeboard (% = measuring location as a percentage of overall length):
	   - Stem:		40.00 ft / 12.19 m
	   - Forecastle (18 %):	35.00 ft / 10.67 m
	   - Mid (0 %):		35.00 ft / 10.67 m
	   - Quarterdeck (18 %):	35.00 ft / 10.67 m
	   - Stern:		35.00 ft / 10.67 m
	   - Average freeboard:	35.35 ft / 10.77 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 75.5 %
		- Above water (accommodation/working, high = better): 264.3 %
	Waterplane Area: 137,198 Square feet or 12,746 Square metres
	Displacement factor (Displacement / loading): 115 %
	Structure weight / hull surface area: 288 lbs/sq ft or 1,406 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 1.00
		- Longitudinal: 1.01
		- Overall: 1.00
	Hull space for machinery, storage, compartmentation is excellent
	Room for accommodation and workspaces is excellent
	Good seaboat, rides out heavy weather easily