RCN Rashomon, Chosen Heavy Cruiser laid down 1925 in Japan
Displacement:
10,102 t light; 10,500 t standard; 11,699 t normal; 12,658 t full load
Dimensions: Length overall / water x beam x draught
607.23 ft / 600.00 ft x 60.00 ft x 22.00 ft (normal load)
185.08 m / 182.88 m x 18.29 m x 6.71 m
Armament:
15 - 5.91" / 150 mm guns (5x3 guns), 102.98lbs / 46.71kg shells, 1921 Model
Quick firing guns in turrets (on barbettes)
on centreline ends, majority forward, 2 raised mounts - superfiring
8 - 4.13" / 105 mm guns (4x2 guns), 35.32lbs / 16.02kg shells, 1921 Model
Dual purpose guns in turrets (on barbettes)
on side, all amidships
16 - 1.57" / 40.0 mm guns (4x4 guns), 1.95lbs / 0.88kg shells, 1923 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
24 - 0.98" / 25.0 mm guns (8x3 guns), 0.48lbs / 0.22kg shells, 1918 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 1,870 lbs / 848 kg
Shells per gun, main battery: 150
8 - 24.0" / 609.6 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.50" / 114 mm 436.00 ft / 132.89 m 9.30 ft / 2.83 m
Ends: Unarmoured
Main Belt covers 112 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.00" / 102 mm 3.00" / 76 mm 2.00" / 51 mm
2nd: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -
- Armour deck: 2.00" / 51 mm, Conning tower: 3.00" / 76 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 105,609 shp / 78,784 Kw = 33.00 kts
Range 8,045nm at 15.00 kts (Bunkerage = 2,158 tons)
Complement:
562 - 731
Cost:
£3.371 million / $13.483 million
Distribution of weights at normal displacement:
Armament: 234 tons, 2.0 %
Armour: 2,089 tons, 17.9 %
- Belts: 747 tons, 6.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 407 tons, 3.5 %
- Armour Deck: 901 tons, 7.7 %
- Conning Tower: 33 tons, 0.3 %
Machinery: 3,429 tons, 29.3 %
Hull, fittings & equipment: 4,250 tons, 36.3 %
Fuel, ammunition & stores: 1,597 tons, 13.7 %
Miscellaneous weights: 100 tons, 0.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
10,413 lbs / 4,723 Kg = 101.1 x 5.9 " / 150 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 2.6 ft / 0.8 m
Roll period: 15.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 1.02
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.517
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 24.49 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.00 ft / 8.84 m
- Forecastle (20 %): 20.50 ft / 6.25 m
- Mid (50 %): 19.40 ft / 5.91 m
- Quarterdeck (15 %): 19.40 ft / 5.91 m
- Stern: 19.00 ft / 5.79 m
- Average freeboard: 20.44 ft / 6.23 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 111.7 %
- Above water (accommodation/working, high = better): 129.8 %
Waterplane Area: 24,363 Square feet or 2,263 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 105 lbs/sq ft or 514 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.38
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform