Another try at a very large battleship: Ger/BB/1923 A1

I just tried the very large German battleship design study, setting the date at 1923. The ship was intended to be 105,000 tons with 9-19.75in and 16-6in guns. The speed specified was 31 knots. About all I had to do, besides ensuring that everything was filled in, was to increase the displacement so that the composite strength was 1.0. The freeboard was great enough that the design turned out very nicely. The ship just barely exceeded 280,000 SHP, and therefore, needed 6 shafts, due to the 70,000 SHP limitation.

Ger/BB/1923, Germany Battleship laid down 1923

Displacement:
	97,663 t light; 101,677 t standard; 109,003 t normal; 114,864 t full load

Dimensions: Length overall / water x beam x draught
	1,088.99 ft / 1,085.00 ft x 140.00 ft x 39.00 ft (normal load)
	331.92 m / 330.71 m x 42.67 m  x 11.89 m

Armament:
      9 - 19.75" / 502 mm guns (3x3 guns), 3,851.87lbs / 1,747.18kg shells, 1923 Model
	  Breech loading guns in turrets (on barbettes)
	  on centreline ends, majority forward, all raised mounts - superfiring
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1923 Model
	  Quick firing guns in turrets (on barbettes)
	  on side, evenly spread, all raised mounts
	Weight of broadside 36,395 lbs / 16,508 kg
	Shells per gun, main battery: 90

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	18.0" / 457 mm	650.00 ft / 198.12 m	18.00 ft / 5.49 m
	Ends:	Unarmoured
	  Main Belt covers 92 % of normal length

   - Torpedo Bulkhead:
		3.00" / 76 mm	650.00 ft / 198.12 m	35.00 ft / 10.67 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	18.0" / 457 mm	11.0" / 279 mm		18.0" / 457 mm
	2nd:	6.00" / 152 mm	4.00" / 102 mm		6.00" / 152 mm

   - Armour deck: 8.00" / 203 mm, Conning tower: 18.00" / 457 mm

Machinery:
	Oil fired boilers, steam turbines, 
	Geared drive, 6 shafts, 286,803 shp / 213,955 Kw = 31.00 kts
	Range 12,000nm at 15.00 kts
	Bunker at max displacement = 13,187 tons

Complement:
	2,999 - 3,899

Cost:
	£24.965 million / $99.859 million

Distribution of weights at normal displacement:
	Armament: 4,549 tons, 4.2 %
	Armour: 39,401 tons, 36.1 %
	   - Belts: 9,190 tons, 8.4 %
	   - Torpedo bulkhead: 2,525 tons, 2.3 %
	   - Armament: 9,674 tons, 8.9 %
	   - Armour Deck: 17,127 tons, 15.7 %
	   - Conning Tower: 885 tons, 0.8 %
	Machinery: 9,586 tons, 8.8 %
	Hull, fittings & equipment: 44,127 tons, 40.5 %
	Fuel, ammunition & stores: 11,340 tons, 10.4 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  184,728 lbs / 83,791 Kg = 48.0 x 19.8 " / 502 mm shells or 32.3 torpedoes
	Stability (Unstable if below 1.00): 1.05
	Metacentric height 9.1 ft / 2.8 m
	Roll period: 19.5 seconds
	Steadiness	- As gun platform (Average = 50 %): 73 %
			- Recoil effect (Restricted arc if above 1.00): 0.85
	Seaboat quality  (Average = 1.00): 1.46

Hull form characteristics:
	Hull has a flush deck
	Block coefficient: 0.644
	Length to Beam Ratio: 7.75 : 1
	'Natural speed' for length: 32.94 kts
	Power going to wave formation at top speed: 47 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 3.00 degrees
	Stern overhang: 2.00 ft / 0.61 m
	Freeboard (% = measuring location as a percentage of overall length):
	   - Stem:		38.00 ft / 11.58 m
	   - Forecastle (20 %):	33.00 ft / 10.06 m
	   - Mid (0 %):		33.00 ft / 10.06 m
	   - Quarterdeck (15 %):	33.00 ft / 10.06 m
	   - Stern:		34.00 ft / 10.36 m
	   - Average freeboard:	33.48 ft / 10.20 m

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 70.5 %
		- Above water (accommodation/working, high = better): 242.6 %
	Waterplane Area: 115,725 Square feet or 10,751 Square metres
	Displacement factor (Displacement / loading): 115 %
	Structure weight / hull surface area: 276 lbs/sq ft or 1,348 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.98
		- Longitudinal: 1.19
		- Overall: 1.00
	Hull space for machinery, storage, compartmentation is excellent
	Room for accommodation and workspaces is excellent
	Ship has slow, easy roll, a good, steady gun platform
	Good seaboat, rides out heavy weather easily