London class, UK Aust cruiser laid down 1929
Displacement:
12,488 t light; 13,000 t standard; 14,313 t normal; 15,307 t full load
Loading submergence 976 tons/feet
Dimensions:
677.13 ft x 68.00 ft x 17.00 ft (normal load)
206.39 m x 20.73 m x 5.18 m
Armament:
9 - 8.00" / 203 mm guns (3 Main turrets x 3 guns, 1 superfiring turret)
8 - 4.50" / 114 mm guns
15 - 1.56" / 40 mm AA guns
24 - 0.80" / 20 mm guns
Weight of broadside 2,703 lbs / 1,226 kg
8 - 21.0" / 533.4 mm above water torpedoes
Armour:
Belt 7.60" / 193 mm, ends unarmoured
Belts cover 90 % of normal area
Main turrets 8.00" / 203 mm
Armour deck 1.50" / 38 mm, Conning tower 8.00" / 203 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 90,634 shp / 67,613 Kw = 30.63 kts
Range 18,200nm at 10.00 kts
over power at 107,978 shp / 80,551Kw=32kts
Complement:
654 - 850
Cost:
£4.442 million / $17.770 million
Distribution of weights at normal displacement:
Armament: 338 tons, 2.4 %
Armour: 3,231 tons, 22.6 %
Belts: 1,221 tons, 8.5 %, Armament: 961 tons, 6.7 %, Armour Deck: 948 tons, 6.6 %
Conning Tower: 102 tons, 0.7 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,784 tons, 19.4 %
Hull, fittings & equipment: 6,135 tons, 42.9 %
Fuel, ammunition & stores: 1,825 tons, 12.8 %
Miscellaneous weights: 0 tons, 0.0 %
Metacentric height 2.8
Remarks:
Hull space for machinery, storage & compartmentation is excellent
Room for accommodation & workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.00
Shellfire needed to sink: 22,462 lbs / 10,189 Kg = 87.7 x 8.0 " / 203 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 2.4
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 82 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.66
Relative quality as seaboat: 1.18
Hull form characteristics:
Block coefficient: 0.640
Sharpness coefficient: 0.38
Hull speed coefficient 'M': 8.53
'Natural speed' for length: 26.02 kts
Power going to wave formation at top speed: 53 %
Trim: 70
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 81.9 %
Relative accommodation and working space: 201.3 %
(Average = 100%)
Displacement factor: 124 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.99
(Structure weight / hull surface area: 120 lbs / square foot or 587 Kg / square metre)
Relative longitudinal hull strength: 1.08
(for 23.00 ft / 7.01 m average freeboard, freeboard adjustment 6.73 ft)
Relative composite hull strength: 1.00
Kent Ballarat class, uk Aust Cruiser laid down 1930
Displacement:
12,426 t light; 13,000 t standard; 14,201 t normal; 15,105 t full load
Loading submergence 984 tons/feet
Dimensions:
644.20 ft x 68.50 ft x 16.30 ft (normal load)
196.35 m x 20.88 m x 4.97 m
Armament:
12 - 8.00" / 203 mm guns (3 Main turrets x 4 guns, 1 superfiring turret)
8 - 4.50" / 114 mm guns (4 2nd turrets x 2 guns)
20 - 1.56" / 40 mm AA guns
25 - 0.80" / 20 mm guns
Weight of broadside 3,481 lbs / 1,579 kg
8 - 21.0" / 533.4 mm above water torpedoes
Armour:
Belt 7.60" / 193 mm, ends unarmoured
Belts cover 90 % of normal area
Main turrets 8.00" / 203 mm
Armour deck 1.50" / 38 mm, Conning tower 8.00" / 203 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 87,518 shp / 65,289 Kw = 30.00 kts
Range 7,000nm at 15.00 kts
Over power is at 113,675shp/ 84,802Kw =32kts
Complement:
650 - 845
Cost:
£4.900 million / $19.599 million
Distribution of weights at normal displacement:
Armament: 435 tons, 3.1 %
Armour: 3,213 tons, 22.6 %
Belts: 1,173 tons, 8.3 %, Armament: 983 tons, 6.9 %, Armour Deck: 956 tons, 6.7 %
Conning Tower: 101 tons, 0.7 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,652 tons, 18.7 %
Hull, fittings & equipment: 6,125 tons, 43.1 %
Fuel, ammunition & stores: 1,775 tons, 12.5 %
Miscellaneous weights: 0 tons, 0.0 %
Metacentric height 2.8
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
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.00
Shellfire needed to sink: 20,630 lbs / 9,357 Kg = 80.6 x 8.0 " / 203 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 4.3
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 73 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.71
Relative quality as seaboat: 1.00
Hull form characteristics:
Block coefficient: 0.691
Sharpness coefficient: 0.40
Hull speed coefficient 'M': 8.14
'Natural speed' for length: 25.38 kts
Power going to wave formation at top speed: 55 %
Trim: 73
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 84.8 %
Relative accommodation and working space: 188.2 %
(Average = 100%)
Displacement factor: 118 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.00
(Structure weight / hull surface area: 124 lbs / square foot or 608 Kg / square metre)
Relative longitudinal hull strength: 1.04
(for 21.30 ft / 6.49 m average freeboard, freeboard adjustment 5.06 ft)
Relative composite hull strength: 1.00
both ships are desing for 30kts but when built can make 32kts and just come in on the 13,000ton mark. for treaty Cruisers