Thanas wrote:Fingolfin_Noldor wrote:I'm likely to convert one of the 4-5 50,000tonne new battleships into a carrier. Are there any particular objections? I will post the specs for the battleship if required.
The specs would be nice...and a 50kt carrier? Aren't you better off by just using that yardspace for two 25.000t carriers?
Well, I was thinking of a Lexington type carrier which were actually based off a battlecruiser and were capable of 33.5knots.
Here are the rough tentative specs:
Proto Battleship, Byzantium Battleship laid down 1924
Displacement:
47,320 t light; 49,775 t standard; 53,921 t normal; 57,238 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(892.40 ft / 869.42 ft) x 108.27 ft x (34.45 / 36.09 ft)
(272.00 m / 265.00 m) x 33.00 m x (10.50 / 11.00 m)
Armament:
9 - 16.00" / 406 mm 50.0 cal guns - 2,168.09lbs / 983.43kg shells, 90 per gun
Breech loading guns in turret on barbette mounts, 1924 Model
3 x 3-gun mounts on centreline ends, majority forward
1 raised mount - superfiring
16 - 6.00" / 152 mm 45.0 cal guns - 108.92lbs / 49.41kg shells, 150 per gun
Breech loading guns in casemate mounts, 1924 Model
16 x Twin mounts on sides amidships
16 - 5.00" / 127 mm 25.0 cal guns - 56.77lbs / 25.75kg shells, 500 per gun
Anti-air guns in deck and hoist mounts, 1924 Model
8 x Twin mounts on side ends, evenly spread
32 - 0.79" / 20.0 mm 70.0 cal guns - 0.27lbs / 0.12kg shells, 600 per gun
Anti-air guns in deck mounts, 1924 Model
8 x 4-gun mounts on centreline, aft deck forward
Weight of broadside 22,172 lbs / 10,057 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 15.0" / 381 mm 570.00 ft / 173.74 m 18.00 ft / 5.49 m
Ends: Unarmoured
Main Belt covers 101 % of normal length
- Torpedo Bulkhead:
5.00" / 127 mm 410.00 ft / 124.97 m 27.00 ft / 8.23 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 18.0" / 457 mm 15.0" / 381 mm 15.0" / 381 mm
2nd: 8.00" / 203 mm 6.00" / 152 mm 8.00" / 203 mm
3rd: 2.00" / 51 mm 1.00" / 25 mm 1.00" / 25 mm
- Armoured deck - multiple decks: 5.00" / 127 mm For and Aft decks
Forecastle: 4.00" / 102 mm Quarter deck: 4.00" / 102 mm
- Conning towers: Forward 11.00" / 279 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 149,727 shp / 111,696 Kw = 30.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 7,463 tons
Complement:
1,769 - 2,300
Cost:
£13.908 million / $55.631 million
Distribution of weights at normal displacement:
Armament: 4,619 tons, 8.6 %
Armour: 19,673 tons, 36.5 %
- Belts: 6,522 tons, 12.1 %
- Torpedo bulkhead: 2,048 tons, 3.8 %
- Armament: 4,459 tons, 8.3 %
- Armour Deck: 6,305 tons, 11.7 %
- Conning Tower: 338 tons, 0.6 %
Machinery: 4,932 tons, 9.1 %
Hull, fittings & equipment: 18,005 tons, 33.4 %
Fuel, ammunition & stores: 6,601 tons, 12.2 %
Miscellaneous weights: 92 tons, 0.2 %
- Hull above water: 20 tons
- On freeboard deck: 72 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
70,201 lbs / 31,843 Kg = 34.3 x 16.0 " / 406 mm shells or 11.9 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 5.7 ft / 1.7 m
Roll period: 19.1 seconds
Steadiness - As gun platform (Average = 50 %): 73 %
- Recoil effect (Restricted arc if above 1.00): 0.75
Seaboat quality (Average = 1.00): 1.08
Hull form characteristics:
Hull has a flush deck,
a normal bow and large transom stern
Block coefficient (normal/deep): 0.582 / 0.590
Length to Beam Ratio: 8.03 : 1
'Natural speed' for length: 33.93 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 67
Bow angle (Positive = bow angles forward): 35.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 24.00 %, 32.81 ft / 10.00 m, 19.69 ft / 6.00 m
- Forward deck: 45.00 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Aft deck: 17.00 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Quarter deck: 14.00 %, 19.69 ft / 6.00 m, 22.97 ft / 7.00 m
- Average freeboard: 21.17 ft / 6.45 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.5 %
- Above water (accommodation/working, high = better): 149.5 %
Waterplane Area: 70,526 Square feet or 6,552 Square metres
Displacement factor (Displacement / loading): 108 %
Structure weight / hull surface area: 211 lbs/sq ft or 1,030 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.03
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform