I just entered the specs for the Ger/BB/1915 CDV design, and made data entry errors that made it look like "it worked"

The Ger/BB/1915 CDV is a tubby coast defense battleship ("V" means vessel). The ship has 4-18in and 16-4in guns, with 4-23.6in TT above water. The ship has only a 10in armor basis, but a 10in deck, as well. Back 30-some years ago, we were enamoured with coast defense battleships. I entered the data, but neglected to give the belt length or height, as well as the anti-torpedo bulkhead. With little protection, except for a 10in deck (like a heavily protected cruiser), the design worked pretty well. To get sufficient hull strength, after entering the data, the ship ballooned to 36,448 tons, normal displacement. The drawing has a profile like a 1920's pocket battleships, with a single funnel, tower mast,and single, German-looking turrets, forward and aft. To obtain passable seakeeping ability, I had to reduce the beam to 112 feet, instead of the original 118 ft. You expect a coast defense battleship to accept some wetness forward, but I am pleased with how the design developed.

Ger/BB/1915 CDV design study A1, Germany Coast Defense Battleship laid down 1915

Displacement:
	34,239 t light; 35,480 t standard; 36,448 t normal; 37,222 t full load

Dimensions: Length overall / water x beam x draught
	650.00 ft / 650.00 ft x 112.00 ft x 27.00 ft (normal load)
	198.12 m / 198.12 m x 34.14 m  x 8.23 m

Armament:
      4 - 18.00" / 457 mm guns (2x2 guns), 2,916.00lbs / 1,322.68kg shells, 1915 Model
	  Breech loading guns in turrets (on barbettes)
	  on centreline ends, evenly spread, all raised mounts
      16 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1915 Model
	  Quick firing guns in deck mounts 
	  on side, evenly spread, all raised mounts
	Weight of broadside 12,176 lbs / 5,523 kg
	Shells per gun, main battery: 75
	4 - 23.6" / 599.44 mm above water torpedoes

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	10.0" / 254 mm	370.00 ft / 112.78 m	16.00 ft / 4.88 m
	Ends:	Unarmoured
	  Main Belt covers 88 % of normal length

   - Torpedo Bulkhead:
		1.50" / 38 mm	370.00 ft / 112.78 m	22.00 ft / 6.71 m

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

   - Armour deck: 10.00" / 254 mm, Conning tower: 10.00" / 254 mm

Machinery:
	Oil fired boilers, steam turbines, 
	Geared drive, 4 shafts, 91,579 shp / 68,318 Kw = 26.00 kts
	Range 3,600nm at 12.00 kts
	Bunker at max displacement = 1,742 tons

Complement:
	1,318 - 1,714

Cost:
	£4.309 million / $17.236 million

Distribution of weights at normal displacement:
	Armament: 1,522 tons, 4.2 %
	Armour: 15,503 tons, 42.5 %
	   - Belts: 2,721 tons, 7.5 %
	   - Torpedo bulkhead: 452 tons, 1.2 %
	   - Armament: 1,786 tons, 4.9 %
	   - Armour Deck: 10,308 tons, 28.3 %
	   - Conning Tower: 237 tons, 0.6 %
	Machinery: 3,469 tons, 9.5 %
	Hull, fittings & equipment: 13,744 tons, 37.7 %
	Fuel, ammunition & stores: 2,209 tons, 6.1 %
	Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  57,869 lbs / 26,249 Kg = 19.8 x 18.0 " / 457 mm shells or 9.6 torpedoes
	Stability (Unstable if below 1.00): 1.15
	Metacentric height 7.7 ft / 2.3 m
	Roll period: 17.0 seconds
	Steadiness	- As gun platform (Average = 50 %): 60 %
			- Recoil effect (Restricted arc if above 1.00): 0.38
	Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
	Hull has a flush deck
	Block coefficient: 0.649
	Length to Beam Ratio: 5.80 : 1
	'Natural speed' for length: 25.50 kts
	Power going to wave formation at top speed: 54 %
	Trim (Max stability = 0, Max steadiness = 100): 60
	Bow angle (Positive = bow angles forward): 0.00 degrees
	Stern overhang: -2.00 ft / -0.61 m
	Freeboard (% = measuring location as a percentage of overall length):
	   - Stem:		24.00 ft / 7.32 m
	   - Forecastle (20 %):	22.00 ft / 6.71 m
	   - Mid (0 %):		21.00 ft / 6.40 m
	   - Quarterdeck (15 %):	19.00 ft / 5.79 m
	   - Stern:		19.00 ft / 5.79 m
	   - Average freeboard:	20.11 ft / 6.13 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 76.0 %
		- Above water (accommodation/working, high = better): 149.8 %
	Waterplane Area: 55,718 Square feet or 5,176 Square metres
	Displacement factor (Displacement / loading): 105 %
	Structure weight / hull surface area: 194 lbs/sq ft or 946 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.96
		- Longitudinal: 1.39
		- Overall: 1.00
	Hull space for machinery, storage, compartmentation is excellent
	Room for accommodation and workspaces is excellent