WesWorld

Red Admiral
Spammer wanna be
Posts: 8
(5/4/03 4:06:10 pm)
Reply post-treaty BB based on H3
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Well here you guys are. After playing around with various Brit 1921 designs i adopted H3a but armoured it a bit more. G3 and I3 sim quite well also and both are hard opposition. If anyone wants them then just ask.

Attila, laid down 1937

Displacement:
48,412 t light; 51,061 t standard; 54,440 t normal; 56,926 t full load
Loading submergence 1,820 tons/feet

Dimensions:
876.00 ft x 106.00 ft x 36.00 ft (normal load)
267.00 m x 32.31 m x 10.97 m

Armament:
6 - 18.00" / 457 mm guns (2 Main turrets x 3 guns, 1 superfiring turret)
Main turrets are grouped together
18 - 5.00" / 127 mm guns (6 2nd turrets x 3 guns)
48 - 1.57" / 40 mm AA guns
Weight of broadside 18,715 lbs / 8,489 kg

Armour:
Belt 16.00" / 406 mm, ends unarmoured
Belts cover 77 % of normal area
Main turrets 26.00" / 660 mm, 2nd turrets 1.00" / 25 mm
Armour deck 9.00" / 229 mm, Conning tower 3.00" / 76 mm
Torpedo bulkhead 2.60" / 66 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 169,162 shp / 126,195 Kw = 30.00 kts
Range 10,000nm at 15.00 kts

Complement:
1,782 - 2,316

Cost:
£23.541 million / $94.165 million

Distribution of weights at normal displacement:
Armament: 2,339 tons, 4.3 %
Armour: 21,709 tons, 39.9 %
Belts: 3,625 tons, 6.7 %, Armament: 5,411 tons, 9.9 %, Armour Deck: 10,609 tons, 19.5 %
Conning Tower: 93 tons, 0.2 %, Torpedo bulkhead: 1,972 tons, 3.6 %
Machinery: 4,689 tons, 8.6 %
Hull, fittings & equipment: 19,675 tons, 36.1 %
Fuel, ammunition & stores: 6,028 tons, 11.1 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 6.0

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

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 60,920 lbs / 27,633 Kg = 20.9 x 18.0 " / 457 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 9.2
(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: 0.51
Relative quality as seaboat: 1.06

Hull form characteristics:
Block coefficient: 0.570
Sharpness coefficient: 0.38
Hull speed coefficient 'M': 7.07
'Natural speed' for length: 29.60 kts
Power going to wave formation at top speed: 48 %
Trim: 51
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 76.3 %
Relative accommodation and working space: 136.2 %
(Average = 100%)
Displacement factor: 109 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.99
(Structure weight / hull surface area: 215 lbs / square foot or 1,048 Kg / square metre)
Relative longitudinal hull strength: 1.05
(for 20.00 ft / 6.10 m average freeboard, freeboard adjustment -1.25 ft)
Relative composite hull strength: 1.00