WesWorld

In december 1915 the Finnboda Varf in Stockholm present their suggetstion of a large cruiser killer for the Imperial Swedish Navy, should the navy go for it or do you have any other suggetsio, it is a ship in true fisherian style.

Projekt Alfa, Finnboda Varf Sweden laid down 1916

Displacement:
11 898 t light; 12 544 t standard; 13 100 t normal; 13 492 t full load
Loading submergence 723 tons/feet

Dimensions:
656,17 ft x 62,34 ft x 22,97 ft (normal load)
200,00 m x 19,00 m x 7,00 m

Armament:
6 - 11,14" / 283 mm guns (3 Main turrets x 2 guns)
12 - 4,13" / 105 mm guns
6 - 2,24" / 57 mm AA guns
Weight of broadside 4 607 lbs / 2 090 kg
2 - 21,0" / 533,4 mm submerged torpedo tubes

Armour:
Belt 6,00" / 152 mm, ends unarmoured
Belts cover 121 % of normal area
Main turrets 6,00" / 152 mm, 2nd gun shields 1,00" / 25 mm
Armour deck 1,00" / 25 mm, Conning tower 8,00" / 203 mm

Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 4 shafts, 88 960 shp / 66 364 Kw = 31,50 kts
Range 6 000nm at 10,00 kts

Complement:
612 - 795

Cost:
£2,254 million / $9,014 million

Distribution of weights at normal displacement:
Armament: 576 tons, 4,4 %
Armour: 2 469 tons, 18,8 %
Belts: 1 197 tons, 9,1 %, Armament: 709 tons, 5,4 %, Armour Deck: 468 tons, 3,6 %
Conning Tower: 96 tons, 0,7 %, Torpedo bulkhead: 0 tons, 0,0 %
Machinery: 3 407 tons, 26,0 %
Hull, fittings & equipment: 5 440 tons, 41,5 %
Fuel, ammunition & stores: 1 202 tons, 9,2 %
Miscellaneous weights: 6 tons, 0,0 %

Metacentric height 3,1

Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is excellent

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1,14
Shellfire needed to sink: 9 553 lbs / 4 333 Kg = 13,8 x 11,1 " / 283 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1,2
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 52 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0,82
Relative quality as seaboat: 1,04

Hull form characteristics:
Block coefficient: 0,488
Sharpness coefficient: 0,32
Hull speed coefficient 'M': 8,51
'Natural speed' for length: 25,62 kts
Power going to wave formation at top speed: 52 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 120,7 %
Relative accommodation and working space: 142,1 %
(Average = 100%)
Displacement factor: 94 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0,99
(Structure weight / hull surface area: 129 lbs / square foot or 629 Kg / square metre)
Relative longitudinal hull strength: 1,11
(for 18,04 ft / 5,50 m average freeboard, freeboard adjustment 2,06 ft)
Relative composite hull strength: 1,00

I think that a shallower draft could be better. Around 5-6m would be better for the Baltic.

10" guns and more speed, just built to hunt down the enemy cruisers

Projekt Beta, Finnboda Varf Cruiser laid down 1916

Displacement:
12 118 t light; 12 673 t standard; 13 300 t normal; 13 749 t full load
Loading submergence 823 tons/feet

Dimensions:
688,98 ft x 62,34 ft x 19,69 ft (normal load)
210,00 m x 19,00 m x 6,00 m

Armament:
6 - 10,00" / 254 mm guns (3 Main turrets x 2 guns)
12 - 4,13" / 105 mm guns
6 - 2,24" / 57 mm AA guns
Weight of broadside 3 458 lbs / 1 568 kg
2 - 21,0" / 533,4 mm submerged torpedo tubes

Armour:
Belt 6,00" / 152 mm, ends unarmoured
Belts cover 115 % of normal area
Main turrets 6,00" / 152 mm, 2nd gun shields 1,00" / 25 mm
Armour deck 1,00" / 25 mm, Conning tower 8,00" / 203 mm

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 96 062 shp / 71 663 Kw = 32,00 kts
Range 6 000nm at 11,00 kts

Complement:
619 - 805

Cost:
£2,108 million / $8,432 million

Distribution of weights at normal displacement:
Armament: 432 tons, 3,2 %
Armour: 2 473 tons, 18,6 %
Belts: 1 189 tons, 8,9 %, Armament: 655 tons, 4,9 %, Armour Deck: 533 tons, 4,0 %
Conning Tower: 97 tons, 0,7 %, Torpedo bulkhead: 0 tons, 0,0 %
Machinery: 3 579 tons, 26,9 %
Hull, fittings & equipment: 5 628 tons, 42,3 %
Fuel, ammunition & stores: 1 182 tons, 8,9 %
Miscellaneous weights: 6 tons, 0,0 %

Metacentric height 3,4

Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is excellent

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1,19
Shellfire needed to sink: 12 232 lbs / 5 548 Kg = 24,5 x 10,0 " / 254 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1,4
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 54 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0,65
Relative quality as seaboat: 1,10

Hull form characteristics:
Block coefficient: 0,551
Sharpness coefficient: 0,34
Hull speed coefficient 'M': 8,89
'Natural speed' for length: 26,25 kts
Power going to wave formation at top speed: 52 %
Trim: 49
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 114,7 %
Relative accommodation and working space: 174,4 %
(Average = 100%)
Displacement factor: 102 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1,03
(Structure weight / hull surface area: 123 lbs / square foot or 600 Kg / square metre)
Relative longitudinal hull strength: 0,99
(for 19,69 ft / 6,00 m average freeboard, freeboard adjustment 3,65 ft)
Relative composite hull strength: 1,00