Hel, Denmark Heavy Cruiser laid down 1923
Displacement:
12,677 t light; 13,366 t standard; 14,870 t normal; 16,014 t full load
Loading submergence 918 tons/feet
Dimensions:
666.00 ft x 74.00 ft x 20.00 ft (normal load)
203.00 m x 22.56 m x 6.10 m
Armament:
12 - 8.27" / 210 mm guns (4 Main turrets x 3 guns, 2 superfiring turrets)
18 - 5.10" / 130 mm guns (6 2nd turrets x 3 guns)
8 - 3.00" / 76 mm AA guns
24 - 0.51" / 13 mm guns
Weight of broadside 4,697 lbs / 2,131 kg
10 - 21.0" / 533.4 mm above water torpedoes
Armour:
Belt 3.00" / 76 mm, end belts 2.00" / 51 mm
Belts cover 92 % of normal area
Main turrets 3.00" / 76 mm, 2nd turrets 1.50" / 38 mm
Light gun shields 0.50" / 13 mm
Armour deck 2.00" / 51 mm, Conning tower 3.00" / 76 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 82,272 shp / 61,375 Kw = 30.00 kts
Range 13,500nm at 12.00 kts
Complement:
673 - 875
Cost:
£3.845 million / $15.382 million
Distribution of weights at normal displacement:
Armament: 587 tons, 3.9 %
Armour: 2,600 tons, 17.5 %
Belts: 675 tons, 4.5 %, Armament: 698 tons, 4.7 %, Armour Deck: 1,189 tons, 8.0 %
Conning Tower: 39 tons, 0.3 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,750 tons, 18.5 %
Hull, fittings & equipment: 6,640 tons, 44.7 %
Fuel, ammunition & stores: 2,193 tons, 14.7 %
Miscellaneous weights: 100 tons, 0.7 %
Metacentric height 4.0
Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.12
Shellfire needed to sink: 20,233 lbs / 9,178 Kg = 71.5 x 8.3 " / 210 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 2.2
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 71 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.68
Relative quality as seaboat: 1.22
Hull form characteristics:
Block coefficient: 0.528
Sharpness coefficient: 0.35
Hull speed coefficient 'M': 8.28
'Natural speed' for length: 25.81 kts
Power going to wave formation at top speed: 51 %
Trim: 58
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 91.5 %
Relative accommodation and working space: 172.1 %
(Average = 100%)
Displacement factor: 115 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.97
(Structure weight / hull surface area: 135 lbs / square foot or 660 Kg / square metre)
Relative longitudinal hull strength: 1.23
(for 22.00 ft / 6.71 m average freeboard, freeboard adjustment 5.61 ft)
Relative composite hull strength: 1.00