this is my 2nd ever spring sharp design posted here for your consideration and scrutiny
took most of the armor values from the real life battleship bismarck with some slight adjustments as well as some hull form characteristics
Bayern, Germany Battleship laid down 1934
Displacement:
65,709 t light; 68,415 t standard; 71,932 t normal; 74,746 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(825.37 ft / 813.00 ft) x 122.89 ft (Bulges 122.90 ft) x (37.00 / 38.25 ft)
(251.57 m / 247.80 m) x 37.46 m (Bulges 37.46 m) x (11.28 / 11.66 m)
Armament:
6 - 18.00" / 457 mm 50.0 cal guns - 3,086.99lbs / 1,400.24kg shells, 120 per gun
Breech loading guns in turret on barbette mounts, 1934 Model
2 x Twin mounts on centreline, forward deck forward
1 raised mount - superfiring
1 x Twin mount on centreline, aft deck aft
8 - 4.10" / 104 mm 45.0 cal guns - 34.75lbs / 15.76kg shells, 200 per gun
Dual purpose guns in deck and hoist mounts, 1934 Model
2 x Twin mounts on sides, aft deck centre
2 x Twin mounts on sides, forward deck centre
6 - 1.30" / 33.0 mm 45.0 cal guns - 1.11lbs / 0.50kg shells, 350 per gun
Anti-air guns in deck mounts, 1934 Model
2 x Single mounts on sides, forward deck aft
4 x Single mounts on sides, aft deck forward
10 - 0.80" / 20.3 mm 50.0 cal guns - 0.27lbs / 0.12kg shells, 500 per gun
Machine guns in deck mounts, 1934 Model
10 x Twin mounts on sides, evenly spread
Weight of broadside 18,809 lbs / 8,532 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.2" / 310 mm 643.04 ft / 196.00 m 13.55 ft / 4.13 m
Ends: 3.94" / 100 mm 157.48 ft / 48.00 m 13.29 ft / 4.05 m
12.48 ft / 3.80 m Unarmoured ends
Upper: 5.91" / 150 mm 643.04 ft / 196.00 m 10.60 ft / 3.23 m
Main Belt covers 122 % of normal length
Main Belt inclined 13.00 degrees (positive = in)
- Torpedo Bulkhead - Strengthened structural bulkheads:
4.72" / 120 mm 787.40 ft / 240.00 m 13.12 ft / 4.00 m
Beam between torpedo bulkheads 113.70 ft / 34.66 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.0" / 381 mm 7.00" / 178 mm 13.0" / 330 mm
2nd: 3.50" / 89 mm 1.00" / 25 mm 2.00" / 51 mm
3rd: 1.00" / 25 mm 1.00" / 25 mm -
4th: 0.80" / 20 mm 0.60" / 15 mm -
- Armoured deck - single deck:
For and Aft decks: 3.35" / 85 mm
Forecastle: 3.62" / 92 mm Quarter deck: 3.62" / 92 mm
- Conning towers: Forward 3.15" / 80 mm, Aft 3.15" / 80 mm
Machinery:
Oil fired boilers, steam turbines, plus diesel motors,
Geared drive, 4 shafts, 168,715 shp / 125,862 Kw = 28.00 kts
Range 7,050nm at 16.00 kts
Bunker at max displacement = 6,331 tons
Complement:
2,196 - 2,855
Cost:
£24.175 million / $96.698 million
Distribution of weights at normal displacement:
Armament: 3,251 tons, 4.5 %
- Guns: 3,251 tons, 4.5 %
Armour: 16,493 tons, 22.9 %
- Belts: 6,472 tons, 9.0 %
- Torpedo bulkhead: 1,806 tons, 2.5 %
- Armament: 2,952 tons, 4.1 %
- Armour Deck: 5,028 tons, 7.0 %
- Conning Towers: 235 tons, 0.3 %
Machinery: 4,854 tons, 6.7 %
Hull, fittings & equipment: 40,171 tons, 55.8 %
Fuel, ammunition & stores: 6,224 tons, 8.7 %
Miscellaneous weights: 940 tons, 1.3 %
- Hull below water: 200 tons
- Hull above water: 640 tons
- On freeboard deck: 100 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
133,195 lbs / 60,416 Kg = 45.7 x 18.0 " / 457 mm shells or 27.0 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 8.2 ft / 2.5 m
Roll period: 18.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.42
Seaboat quality (Average = 1.00): 0.89
Hull form characteristics:
Hull has low forecastle, low quarterdeck ,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.681 / 0.684
Length to Beam Ratio: 6.62 : 1
'Natural speed' for length: 28.51 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 79
Bow angle (Positive = bow angles forward): 21.00 degrees
Stern overhang: 7.00 ft / 2.13 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 31.00 %, 14.00 ft / 4.27 m, 14.00 ft / 4.27 m
- Forward deck: 32.00 %, 23.00 ft / 7.01 m, 23.00 ft / 7.01 m
- Aft deck: 18.00 %, 23.00 ft / 7.01 m, 23.00 ft / 7.01 m
- Quarter deck: 19.00 %, 12.00 ft / 3.66 m, 12.00 ft / 3.66 m
- Average freeboard: 18.12 ft / 5.52 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 52.6 %
- Above water (accommodation/working, high = better): 157.1 %
Waterplane Area: 78,724 Square feet or 7,314 Square metres
Displacement factor (Displacement / loading): 158 %
Structure weight / hull surface area: 423 lbs/sq ft or 2,064 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 2.05
- Longitudinal: 2.15
- Overall: 2.06
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
sorry if that comes out messy i couldnt get it to paste properly
anyway this is my 2nd ever design and i need advice and tips for future desgins
cheers