... and the last one...
'Godzilla' Mogami, Japan Battleship laid down 1934
Displacement:
125,088 t light; 132,181 t standard; 138,973 t normal; 144,406 t full load
Dimensions: Length overall / water x beam x draught
1,171.72 ft / 1,150.00 ft x 150.00 ft (Bulges 170.00 ft) x 40.00 ft (normal load)
357.14 m / 350.52 m x 45.72 m (Bulges 51.82 m) x 12.19 m
Armament:
15 - 20.08" / 510 mm guns (5x3 guns), 4,200.00lbs / 1,905.09kg shells, 1930 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 2 raised mounts - superfiring
20 - 5.12" / 130 mm guns (10x2 guns), 65.00lbs / 29.48kg shells, 1934 Model
Dual purpose guns in turrets (on barbettes)
on side, all amidships, 6 raised mounts - superfiring
32 - 1.57" / 40.0 mm guns (4x8 guns), 2.00lbs / 0.91kg shells, 1923 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread, all raised mounts - superfiring
30 - 0.98" / 25.0 mm guns (10x3 guns), 0.57lbs / 0.26kg shells, 1926 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread
40 - 0.52" / 13.2 mm guns (10x4 guns), 0.09lbs / 0.04kg shells, 1930 Model
Machine guns in deck mounts
on side, evenly spread, 4 raised mounts
Weight of broadside 64,385 lbs / 29,204 kg
Shells per gun, main battery: 120
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 20.0" / 508 mm 550.00 ft / 167.64 m 14.70 ft / 4.48 m
Ends: Unarmoured
Main Belt covers 74 % of normal length
- Torpedo Bulkhead and Bulges:
3.00" / 76 mm 550.00 ft / 167.64 m 38.02 ft / 11.59 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 30.0" / 762 mm 20.0" / 508 mm 25.0" / 635 mm
2nd: 3.00" / 76 mm 1.00" / 25 mm 2.00" / 51 mm
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -
5th: 0.50" / 13 mm - -
- Armour deck: 9.00" / 229 mm, Conning tower: 24.00" / 610 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 299,946 shp / 223,760 Kw = 31.20 kts
Range 10,715nm at 15.00 kts
Bunker at max displacement = 12,225 tons
Complement:
3,598 - 4,678
Cost:
£59.449 million / $237.796 million
Distribution of weights at normal displacement:
Armament: 7,766 tons, 5.6 %
Armour: 51,499 tons, 37.1 %
- Belts: 7,407 tons, 5.3 %
- Torpedo bulkhead: 2,321 tons, 1.7 %
- Armament: 18,027 tons, 13.0 %
- Armour Deck: 22,357 tons, 16.1 %
- Conning Tower: 1,387 tons, 1.0 %
Machinery: 8,629 tons, 6.2 %
Hull, fittings & equipment: 56,793 tons, 40.9 %
Fuel, ammunition & stores: 13,885 tons, 10.0 %
Miscellaneous weights: 400 tons, 0.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
208,876 lbs / 94,744 Kg = 51.6 x 20.1 " / 510 mm shells or 39.1 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 10.5 ft / 3.2 m
Roll period: 22.0 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.59
Seaboat quality (Average = 1.00): 1.24
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.622
Length to Beam Ratio: 6.76 : 1
'Natural speed' for length: 39.43 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 4.00 ft / 1.22 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 38.00 ft / 11.58 m
- Forecastle (20 %): 30.80 ft / 9.39 m
- Mid (50 %): 30.80 ft / 9.39 m
- Quarterdeck (15 %): 30.80 ft / 9.39 m
- Stern: 30.80 ft / 9.39 m
- Average freeboard: 31.38 ft / 9.56 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 73.4 %
- Above water (accommodation/working, high = better): 218.9 %
Waterplane Area: 134,274 Square feet or 12,474 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 313 lbs/sq ft or 1,529 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.00
- 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
Good seaboat, rides out heavy weather easily