Проект суперлинкора А-140К 
В этот раз я не стал фантазировать и пострался максимально точно отобразить оригинальный проект.
Вот, что получилось в Спрингшарпе:
A-140K, Japan battleship laid down 1935
Displacement:
47 466 t light; 50 207 t standard; 52 649 t normal; 54 603 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(739,29 ft / 725,07 ft) x 118,11 ft x (33,46 / 34,51 ft)
(225,34 m / 221,00 m) x 36,00 m x (10,20 / 10,52 m)
Armament:
8 - 17,99" / 457 mm 45,0 cal guns - 3 218,75lbs / 1 460,00kg shells, 100 per gun
Breech loading guns in turret on barbette mounts, 1935 Model
2 x Triple mounts on centreline, forward evenly spread
1 raised mount
1 x Twin mount on centreline, forward deck forward
9 - 6,10" / 155 mm 60,0 cal guns - 123,24lbs / 55,90kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1931 Model
2 x Triple mounts on sides, aft deck aft
1 x Triple mount on centreline, aft deck aft
1 raised mount
12 - 5,00" / 127 mm 40,0 cal guns - 51,81lbs / 23,50kg shells, 450 per gun
Anti-air guns in deck mounts, 1931 Model
6 x Twin mounts on centreline, aft evenly spread
6 raised mounts
24 - 0,98" / 25,0 mm 60,0 cal guns - 0,52lbs / 0,24kg shells, 1 500 per gun
Machine guns in deck mounts, 1935 Model
12 x Twin mounts on centreline, aft evenly spread
12 raised mounts
Weight of broadside 27 493 lbs / 12 471 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13,0" / 330 mm 471,29 ft / 143,65 m 13,06 ft / 3,98 m
Ends: Unarmoured
Main Belt covers 100% of normal length
Main belt does not fully cover magazines and engineering spaces
Main Belt inclined 20,00 degrees (positive = in)
- Torpedo Bulkhead - Additional damage containing bulkheads:
2,76" / 70 mm 471,29 ft / 143,65 m 32,15 ft / 9,80 m
Beam between torpedo bulkheads 9,84 ft / 3,00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17,7" / 450 mm 9,84" / 250 mm 11,4" / 290 mm
2nd: 0,98" / 25 mm 0,98" / 25 mm 2,95" / 75 mm
3rd: 0,20" / 5 mm - -
- Armoured deck - single deck:
For and Aft decks: 7,87" / 200 mm
Forecastle: 1,57" / 40 mm Quarter deck: 2,36" / 60 mm
- Conning towers: Forward 12,99" / 330 mm, Aft 0,00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 79 094 shp / 59 004 Kw = 24,00 kts
Range 5 900nm at 16,00 kts
Bunker at max displacement = 4 396 tons
Complement:
1 737 - 2 259
Cost:
£22,085 million / $88,338 million
Distribution of weights at normal displacement:
Armament: 4 073 tons, 7,7%
- Guns: 4 073 tons, 7,7%
Armour: 17 331 tons, 32,9%
- Belts: 3 535 tons, 6,7%
- Torpedo bulkhead: 1 545 tons, 2,9%
- Armament: 3 626 tons, 6,9%
- Armour Deck: 8 231 tons, 15,6%
- Conning Tower: 393 tons, 0,7%
Machinery: 2 247 tons, 4,3%
Hull, fittings & equipment: 23 785 tons, 45,2%
Fuel, ammunition & stores: 5 184 tons, 9,8%
Miscellaneous weights: 30 tons, 0,1%
- Hull above water: 10 tons
- On freeboard deck: 10 tons
- Above deck: 10 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
86 802 lbs / 39 373 Kg = 29,8 x 18,0 " / 457 mm shells or 17,0 torpedoes
Stability (Unstable if below 1.00): 1,01
Metacentric height 6,5 ft / 2,0 m
Roll period: 19,4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,89
Seaboat quality (Average = 1.00): 0,93
Hull form characteristics:
Hull has rise aft of midbreak, low quarterdeck ,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0,643 / 0,647
Length to Beam Ratio: 6,14 : 1
'Natural speed' for length: 26,93 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 75
Bow angle (Positive = bow angles forward): 25,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20,00%, 30,51 ft / 9,30 m, 20,67 ft / 6,30 m
- Forward deck: 15,00%, 20,67 ft / 6,30 m, 20,67 ft / 6,30 m
- Aft deck: 50,00%, 24,28 ft / 7,40 m, 24,28 ft / 7,40 m
- Quarter deck: 15,00%, 16,08 ft / 4,90 m, 16,08 ft / 4,90 m
- Average freeboard: 22,57 ft / 6,88 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 666,6%
- Above water (accommodation/working, high = better): 167,6%
Waterplane Area: 65 183 Square feet or 6 056 Square metres
Displacement factor (Displacement / loading): 119%
Structure weight / hull surface area: 289 lbs/sq ft or 1 410 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,15
- Longitudinal: 0,95
- Overall: 1,00
Extremely poor 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
Какие у них там профили полёта... ЕМНИП, выход к цели на 5-7 км и пикирование с этой высоты. 
Если японцы решат-таки перегрузить до упора свои старые крейсера и у них найдутся для них директоры и орудия, то, естественно, 10-см АУ будут гораздо предпочтительнее, чем 8-см.
Но Вы, пожалуй правы - не стоит. Японские АУ а так стреляют дальше, чем американские, так что это уже будет излишеством.
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