IJN Muteki Nippon 99% complete:
Muteki Nippon, Japan Battleship laid down 1946
Displacement:
114.994 t light; 122.010 t standard; 129.708 t normal; 135.867 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(1.218,67 ft / 1.186,02 ft) x 155,84 ft x (37,73 / 39,25 ft)
(371,45 m / 361,50 m) x 47,50 m x (11,50 / 11,96 m)
Armament:
12 - 20,00" / 508 mm 50,0 cal guns - 4.234,56lbs / 1.920,76kg shells, 130 per gun
Breech loading guns in turret on barbette mounts, 1946 Model
4 x Triple mounts on centreline ends, evenly spread
2 raised mounts - superfiring
12 - 6,10" / 155 mm 65,0 cal guns - 125,98lbs / 57,14kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1946 Model
2 x Triple mounts on sides, forward deck aft
2 raised mounts
2 x Triple mounts on centreline ends, evenly spread
2 double raised mounts
32 - 5,00" / 127 mm 65,0 cal guns - 69,30lbs / 31,43kg shells, 470 per gun
Dual purpose guns in deck and hoist mounts, 1946 Model
6 x Twin mounts on sides, aft evenly spread
2 raised mounts
10 x Twin mounts on sides, forward evenly spread
2 raised mounts
201 - 0,98" / 25,0 mm 60,0 cal guns - 0,52lbs / 0,24kg shells, 790 per gun
Machine guns in deck mounts, 1946 Model
40 x Triple mounts on sides, evenly spread
10 raised mounts
27 x Triple mounts on centreline, evenly spread
9 double raised mounts
8 - 0,51" / 13,0 mm 70,0 cal guns - 0,08lbs / 0,03kg shells, 1.410 per gun
Machine guns in deck mounts, 1946 Model
4 x twin mounts on centreline, evenly spread
4 double raised mounts
Weight of broadside 54.649 lbs / 24.788 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 20,0" / 508 mm 652,82 ft / 198,98 m 14,99 ft / 4,57 m
Ends: 6,10" / 155 mm 68,90 ft / 21,00 m 14,99 ft / 4,57 m
464,30 ft / 141,52 m Unarmoured ends
Upper: 7,87" / 200 mm 652,82 ft / 198,98 m 8,01 ft / 2,44 m
Main Belt covers 85% of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
3,07" / 78 mm 652,82 ft / 198,98 m 36,22 ft / 11,04 m
Beam between torpedo bulkheads 149,28 ft / 45,50 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 25,6" / 650 mm 18,0" / 457 mm 15,0" / 380 mm
2nd: 1,97" / 50 mm 0,98" / 25 mm 0,98" / 25 mm
3rd: 0,98" / 25 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 7,64" / 194 mm
- Conning towers: Forward 21,97" / 558 mm, Aft 0,00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 279.363 shp / 208.405 Kw = 30,00 kts
Range 7.200nm at 20,00 kts
Bunker at max displacement = 13.858 tons
Complement:
3.416 - 4.442
Cost:
£76,478 million / $305,912 million
Distribution of weights at normal displacement:
Armament: 9.576 tons, 7,4%
- Guns: 9.576 tons, 7,4%
Armour: 37.940 tons, 29,2%
- Belts: 10.797 tons, 8,3%
- Torpedo bulkhead: 2.687 tons, 2,1%
- Armament: 8.836 tons, 6,8%
- Armour Deck: 14.407 tons, 11,1%
- Conning Tower: 1.213 tons, 0,9%
Machinery: 6.977 tons, 5,4%
Hull, fittings & equipment: 60.231 tons, 46,4%
Fuel, ammunition & stores: 14.714 tons, 11,3%
Miscellaneous weights: 270 tons, 0,2%
- Hull above water: 270 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
209.988 lbs / 95.249 Kg = 52,5 x 20,0 " / 508 mm shells or 40,6 torpedoes
Stability (Unstable if below 1.00): 1,23
Metacentric height 14,3 ft / 4,3 m
Roll period: 17,3 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0,43
Seaboat quality (Average = 1.00): 1,02
Hull form characteristics:
Hull has a flush deck,
a straight bulbous bow and a round stern
Block coefficient (normal/deep): 0,651 / 0,655
Length to Beam Ratio: 7,61 : 1
'Natural speed' for length: 34,44 kts
Power going to wave formation at top speed: 42 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 41,00 degrees
Stern overhang: 0,98 ft / 0,30 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 27,00%, 36,42 ft / 11,10 m, 23,62 ft / 7,20 m
- Forward deck: 30,00%, 23,62 ft / 7,20 m, 23,62 ft / 7,20 m
- Aft deck: 22,00%, 23,62 ft / 7,20 m, 23,62 ft / 7,20 m
- Quarter deck: 21,00%, 23,62 ft / 7,20 m, 16,40 ft / 5,00 m
- Average freeboard: 24,25 ft / 7,39 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 61,9%
- Above water (accommodation/working, high = better): 186,7%
Waterplane Area: 141.720 Square feet or 13.166 Square metres
Displacement factor (Displacement / loading): 121%
Structure weight / hull surface area: 356 lbs/sq ft or 1.739 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,28
- Longitudinal: 0,91
- Overall: 1,00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
comments, suggestions and constructive criticism are welcome.