1937 Swedish BB 15kt

Unregistered HyperRam 3, Sweden Battleship laid down 1937

Displacement:
	13,319 t light; 14,000 t standard; 14,778 t normal; 15,400 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
	(603.66 ft / 590.55 ft) x 65.62 ft x (22.97 / 23.73 ft)
	(184.00 m / 180.00 m) x 20.00 m  x (7.00 / 7.23 m)

Armament:
      6 - 11.14" / 283 mm 50.0 cal guns - 672.41lbs / 305.00kg shells, 120 per gun
	  Breech loading guns in turret on barbette mounts, 1937 Model
	  3 x Twin mounts on centreline, forward evenly spread
      10 - 4.13" / 105 mm 50.0 cal guns - 35.27lbs / 16.00kg shells, 500 per gun
	  Dual purpose guns in deck and hoist mounts, 1930 Model
	  4 x Twin mounts on sides, aft evenly spread
	  1 x Twin mount on centreline, forward deck aft
		1 raised mount
      8 - 1.57" / 40.0 mm 60.0 cal guns - 2.05lbs / 0.93kg shells, 2,000 per gun
	  Breech loading guns in deck mounts, 1936 Model
	  4 x Twin mounts on sides, aft evenly spread
		4 raised mounts
      Weight of broadside 4,404 lbs / 1,997 kg
      Main Torpedoes
      8 - 21.0" / 533 mm, 24.61 ft / 7.50 m torpedoes - 1.641 t each, 13.129 t total
	In 2 sets of deck mounted side rotating tubes

Armour:
   - Belts:		Width (max)	Length (avg)		Height (avg)
	Main:	7.87" / 200 mm	348.43 ft / 106.20 m	6.89 ft / 2.10 m
	Ends:	1.97" / 50 mm	242.09 ft / 73.79 m	6.56 ft / 2.00 m
	Upper:	1.97" / 50 mm	413.39 ft / 126.00 m	8.20 ft / 2.50 m
	  Main Belt covers 91 % of normal length
	  Main Belt inclined -18.00 degrees (positive = in)

   - Torpedo Bulkhead - Strengthened structural bulkheads:
		1.97" / 50 mm	590.55 ft / 180.00 m	21.33 ft / 6.50 m
	Beam between torpedo bulkheads 59.06 ft / 18.00 m

   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
	Main:	15.7" / 400 mm	4.33" / 110 mm		7.87" / 200 mm
	2nd:	1.97" / 50 mm	1.18" / 30 mm		1.97" / 50 mm

   - Protected deck - multiple decks:
	For and Aft decks: 7.31" / 186 mm
	Forecastle: 1.97" / 50 mm  Quarter deck: 4.64" / 118 mm

   - Conning towers: Forward 15.75" / 400 mm, Aft 0.00" / 0 mm

Machinery:
	Oil fired boilers, steam turbines,
	Geared drive, 2 shafts, 81,767 shp / 60,998 Kw = 30.10 kts
	Range 4,044nm at 16.00 kts
	Bunker at max displacement = 1,401 tons

Complement:
	669 - 871

Cost:
	£6.986 million / $27.945 million

Distribution of weights at normal displacement:
	Armament: 1,012 tons, 6.9 %
	   - Guns: 986 tons, 6.7 %
	   - Weapons: 26 tons, 0.2 %
	Armour: 6,241 tons, 42.2 %
	   - Belts: 1,195 tons, 8.1 %
	   - Torpedo bulkhead: 917 tons, 6.2 %
	   - Armament: 584 tons, 4.0 %
	   - Armour Deck: 3,341 tons, 22.6 %
	   - Conning Tower: 204 tons, 1.4 %
	Machinery: 2,266 tons, 15.3 %
	Hull, fittings & equipment: 3,684 tons, 24.9 %
	Fuel, ammunition & stores: 1,459 tons, 9.9 %
	Miscellaneous weights: 115 tons, 0.8 %
	   - Hull above water: 50 tons
	   - Above deck: 65 tons

Overall survivability and seakeeping ability:
	Survivability (Non-critical penetrating hits needed to sink ship):
	  17,737 lbs / 8,045 Kg = 25.6 x 11.1 " / 283 mm shells or 2.4 torpedoes
	Stability (Unstable if below 1.00): 1.16
	Metacentric height 3.5 ft / 1.1 m
	Roll period: 14.7 seconds
	Steadiness	- As gun platform (Average = 50 %): 40 %
			- Recoil effect (Restricted arc if above 1.00): 0.48
	Seaboat quality  (Average = 1.00): 0.64

Hull form characteristics:
	Hull has rise aft of midbreak,
	  a normal bow and small transom stern
	Block coefficient (normal/deep): 0.581 / 0.586
	Length to Beam Ratio: 9.00 : 1
	'Natural speed' for length: 26.06 kts
	Power going to wave formation at top speed: 57 %
	Trim (Max stability = 0, Max steadiness = 100): 50
	Bow angle (Positive = bow angles forward): 18.40 degrees
	Stern overhang: 6.56 ft / 2.00 m
	Freeboard (% = length of deck as a percentage of waterline length):
				Fore end,	 Aft end
	   - Forecastle:	30.00 %,  19.69 ft / 6.00 m,  11.48 ft / 3.50 m
	   - Forward deck:	35.00 %,  11.48 ft / 3.50 m,  11.48 ft / 3.50 m
	   - Aft deck:	24.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
	   - Quarter deck:	11.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
	   - Average freeboard:		15.34 ft / 4.68 m
	Ship tends to be wet forward

Ship space, strength and comments:
	Space	- Hull below water (magazines/engines, low = better): 90.5 %
		- Above water (accommodation/working, high = better): 117.8 %
	Waterplane Area: 28,545 Square feet or 2,652 Square metres
	Displacement factor (Displacement / loading): 95 %
	Structure weight / hull surface area: 121 lbs/sq ft or 592 Kg/sq metre
	Hull strength (Relative):
		- Cross-sectional: 0.99
		- Longitudinal: 1.06
		- Overall: 1.00
	Adequate machinery, storage, compartmentation space
	Adequate accommodation and workspace room
	Caution: Lacks seaworthiness - very limited seakeeping ability

Design statement:
This is a ship that enemy cruisers cannot hope to defeat, therefore they have to commit their limited battleships. Should we fight a war with Russia, this ship is capable of fighting their "battleships" on equal ground.

283mm/50 Bofors Model 1937
105mm/50 Bofors Model 1932
40mm/60 Bofors Model 1936
M/1927 JA 533mm Torpedo - 250kg TNT/HND

Given upper belt height is an average
Quarterdeck is extension of main protected deck for 50% of its length, protecting steering gear; given thickness is average.
Conning tower is homogenous armour
Turret face is 200mm KC laminated on 200mm homogenous

50mm armoured bomb deck over entire ship
fore/aft+1/2quarter, protected deck, 120mm HTS deck + 200mm KC slope@18deg = 135.64mm average
2m main belt, extending 1m below waterline
Turrets have 140mm roofs and 80mm sides

Hangar for 1 seaplane
Heavy Crane, 1x gunpowder cat+seaplane
 He114