WesWorld

Public Data:

Aso Class
RCN Aso
Dimensions: 443.00 ft x 58.00 ft x 21.00 ft
Standard Displacement: 7,150 tons
Armament: 2x1 - 200 mm guns
8x1 - 150mm guns
16x1 - 75mm AA guns
4x1 - 50mm guns
2x1 - 15" torpedo tubes
Armour: Belt 8.00"
Main turrets 7.00", 2nd turret 4.00",
Armour deck 1.00", Conning tower 6.00"
Machinery: 8 coal fired boilers, 2 sets of triple expansion engines,
Geared drive, 2 shafts, 15,000 ihp = 20.00 kts
Range: 5,000nm at 11.00 kts
Complement: 40 Officers, 500 other rank

Jakumo Class
RCN Jakumo, RCN Azuma
Dimensions: 550.00 ft x 70.00 ft x 25.00 ft
Standard Displacement: 10,626 tons
Armament: 2x2 and 4x1 - 200 mm guns
12x1 - 130mm guns
6x2 - 50mm AA guns
6x3 - 25mm guns
Armour: Belt 8.00", Upper Belt 4.00", Ends 2.00"
Main turrets 8.00", 2nd turret 3.00",
AA shield 1.00", Light AA gun shields 1.00",
Armour deck 2.50", Conning tower 12.00"
Machinery: 8 oil fired boilers, 3 sets of steam turbines,
Geared drive, 3 shafts, 60,000 shp = 26.00 kts
Range: 12,000nm at 14.00 kts
Complement: 45 Officers, 770 other rank

Rashomon Class
RCN Rashomon
Dimensions: 600.00 ft x 60.00 ft x 22.00 ft
Standard Displacement: 9,975 tons
Armament: 15x3 - 150 mm guns
4x2 - 105mm guns
4x4 - 40mm AA guns
6x3 - 25mm guns
2x4 - 24" torpedo tubes
Armour: Belt 4.50"
Main turrets 4.00", 2nd turret 2.00",
AA shield 1.00", Light AA gun shields 1.00",
Armour deck 2.00", Conning tower 3.00"
Machinery: 12 oil fired boilers, 3 sets of steam turbines,
Geared drive, 3 shafts, 100,000 shp = 31.50 kts
Range: 7,500nm at 15.00 kts
Complement: 42 Officers, 680 other rank

Aso, Chosen 1st Class Cruiser laid down 1899

Displacement:
7,229 t light; 7,526 t standard; 8,479 t normal; 9,208 t full load
Loading submergence 492 tons/feet

Dimensions:
443.00 ft x 58.00 ft x 21.00 ft (normal load)
135.03 m x 17.68 m x 6.40 m

Armament:
2 - 7.87" / 200 mm guns (2 Main turrets x 1 guns)
8 - 5.91" / 150 mm guns
Secondary guns mounted low & subject to being washed down in a seaway
16 - 2.95" / 75 mm QF guns
4 - 1.97" / 50 mm guns
Weight of broadside 1,533 lbs / 695 kg
2 - 15.0" / 381 mm submerged torpedo tubes

Armour:
Belt 8.00" / 203 mm, ends unarmoured
Belts cover 130 % of normal area
Main turrets 7.00" / 178 mm, 2nd casemates 4.00" / 102 mm
Armour deck 1.00" / 25 mm, Conning tower 6.00" / 152 mm

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 17,833 ihp / 13,304 Kw = 21.30 kts
Range 6,000nm at 11.00 kts

Complement:
441 - 574

Cost:
£0.810 million / $3.241 million

Distribution of weights at normal displacement:
Armament: 192 tons, 2.3 %
Armour: 1,786 tons, 21.1 %
Belts: 1,155 tons, 13.6 %, Armament: 259 tons, 3.1 %, Armour Deck: 318 tons, 3.8 %
Conning Tower: 54 tons, 0.6 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,831 tons, 33.4 %
Hull, fittings & equipment: 2,420 tons, 28.5 %
Fuel, ammunition & stores: 1,251 tons, 14.7 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 4.2

Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.46
Shellfire needed to sink: 5,420 lbs / 2,458 Kg = 22.2 x 7.9 " / 200 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.9
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 70 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.25
Relative quality as seaboat: 1.37

Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.38
Hull speed coefficient 'M': 6.64
'Natural speed' for length: 21.05 kts
Power going to wave formation at top speed: 48 %
Trim: 51
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 128.7 %
Relative accommodation and working space: 96.7 %
(Average = 100%)
Displacement factor: 94 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.00
(Structure weight / hull surface area: 92 lbs / square foot or 451 Kg / square metre)
Relative longitudinal hull strength: 1.27
(for 13.00 ft / 3.96 m average freeboard, freeboard adjustment -1.65 ft)
Relative composite hull strength: 1.02

Jakumo class, Chosen Armored Cruiser laid down 1914
RCN Jakumo, RCN Azuma.

Displacement:
10,675 t light; 11,185 t standard; 13,750 t normal; 15,747 t full load
Loading submergence 691 tons/feet

Dimensions:
550.00 ft x 70.00 ft x 25.00 ft (normal load)
167.64 m x 21.34 m x 7.62 m

Armament:
8 - 7.87" / 200 mm guns (2 Main turrets x 4 guns)
12 - 5.12" / 130 mm guns
Secondary guns mounted low & subject to being washed down in a seaway
12 - 1.97" / 50 mm AA guns
24 - 0.98" / 25 mm guns
Weight of broadside 2,814 lbs / 1,277 kg
4 - 21.0" / 533.4 mm above water torpedoes

Armour:
Belt 8.00" / 203 mm, upper belt 4.00" / 102 mm, end belts 2.00" / 51 mm
Belts cover 80 % of normal area
Main turrets 8.00" / 203 mm, 2nd casemates 3.00" / 76 mm
AA gun shields 1.00" / 25 mm, Light gun shields 1.00" / 25 mm
Armour deck 2.50" / 64 mm, Conning tower 12.00" / 305 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 63,838 shp / 47,624 Kw = 28.00 kts
Range 14,000nm at 14.00 kts

Complement:
634 - 825

Cost:
£1.290 million / $5.159 million

Distribution of weights at normal displacement:
Armament: 352 tons, 2.6 %
Armour: 3,368 tons, 24.5 %
Belts: 1,466 tons, 10.7 %, Armament: 634 tons, 4.6 %, Armour Deck: 1,119 tons, 8.1 %
Conning Tower: 149 tons, 1.1 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,459 tons, 17.9 %
Hull, fittings & equipment: 4,497 tons, 32.7 %
Fuel, ammunition & stores: 3,075 tons, 22.4 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 4.5

Remarks:
Hull space for machinery, storage & compartmentation is excellent
Room for accommodation & workspaces is adequate

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.27
Shellfire needed to sink: 18,415 lbs / 8,353 Kg = 75.4 x 7.9 " / 200 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 2.4
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 54 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.30
Relative quality as seaboat: 1.08

Hull form characteristics:
Block coefficient: 0.500
Sharpness coefficient: 0.36
Hull speed coefficient 'M': 7.02
'Natural speed' for length: 23.45 kts
Power going to wave formation at top speed: 55 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 78.4 %
Relative accommodation and working space: 116.1 %
(Average = 100%)
Displacement factor: 124 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.96
(Structure weight / hull surface area: 117 lbs / square foot or 574 Kg / square metre)
Relative longitudinal hull strength: 1.45
(for 17.20 ft / 5.24 m average freeboard, freeboard adjustment 1.06 ft)
Relative composite hull strength: 1.00

Main guns in two twin turrets and 4 in casemate mounts (Scharnhorst layout)
Main gun casemate mounts armor is 6 inch.

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