WesWorld

Tange class, Chosen Light Cruiser laid down 1925
Ships:2. Tange, Enomoto.

Displacement:
7,631 t light; 7,948 t standard; 8,589 t normal; 9,101 t full load

Dimensions: Length overall / water x beam x draught
606.98 ft / 600.00 ft x 60.00 ft x 16.70 ft (normal load)
185.01 m / 182.88 m x 18.29 m x 5.09 m

Armament:
12 - 5.91" / 150 mm guns (4x3 guns), 110.00lbs / 49.90kg shells, 1921 Model
Quick firing guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 4.13" / 105 mm guns (4x2 guns), 36.00lbs / 16.33kg shells, 1921 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
16 - 1.57" / 40.0 mm guns (4x4 guns), 2.00lbs / 0.91kg shells, 1923 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
18 - 0.98" / 25.0 mm guns (6x3 guns), 0.57lbs / 0.26kg shells, 1918 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 1,650 lbs / 749 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: 3.00" / 76 mm 437.00 ft / 133.20 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: 1.00" / 25 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 76,713 shp / 57,228 Kw = 32.00 kts
Range 5,000nm at 15.00 kts (Bunkerage = 1,152 tons)

Complement:
445 - 579

Cost:
£2.551 million / $10.203 million

Distribution of weights at normal displacement:
Armament: 195 tons, 2.3 %
Armour: 1,249 tons, 14.5 %
- Belts: 499 tons, 5.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 280 tons, 3.3 %
- Armour Deck: 444 tons, 5.2 %
- Conning Tower: 27 tons, 0.3 %
Machinery: 2,491 tons, 29.0 %
Hull, fittings & equipment: 3,696 tons, 43.0 %
Fuel, ammunition & stores: 958 tons, 11.2 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8,629 lbs / 3,914 Kg = 83.8 x 5.9 " / 150 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 2.9 ft / 0.9 m
Roll period: 14.9 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.500
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 24.49 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 69
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: 28.00 ft / 8.53 m
- Forecastle (20 %): 17.50 ft / 5.33 m
- Mid (50 %): 17.30 ft / 5.27 m
- Quarterdeck (15 %): 17.30 ft / 5.27 m
- Stern: 17.30 ft / 5.27 m
- Average freeboard: 18.21 ft / 5.55 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 111.9 %
- Above water (accommodation/working, high = better): 142.5 %
Waterplane Area: 23,986 Square feet or 2,228 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 102 lbs/sq ft or 500 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.07
- 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

Chitose, Chosen 2nd class Cruiser laid down 1896
Ships: 2. Chitose, Kasagi

Displacement:
4,773 t light; 4,978 t standard; 5,289 t normal; 5,516 t full load
Loading submergence 362 tons/feet

Dimensions:
396.00 ft x 49.00 ft x 18.00 ft (normal load)
120.70 m x 14.94 m x 5.49 m

Armament:
2 - 8.00" / 203 mm guns
10 - 4.70" / 119 mm guns
12 - 3.00" / 76 mm QF guns
2 - 1.57" / 40 mm guns
Weight of broadside 1,197 lbs / 543 kg
4 - 18.0" / 457.2 mm above water torpedoes

Armour:
Main gun shields 2.00" / 51 mm, 2nd gun shields 2.00" / 51 mm
QF gun shields 1.00" / 25 mm
Armour deck 2.00" / 51 mm, Conning tower 6.00" / 152 mm

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 12,938 ihp / 9,651 Kw = 21.00 kts
Range 3,000nm at 10.00 kts

Complement:
310 - 403

Cost:
£0.595 million / $2.378 million

Distribution of weights at normal displacement:
Armament: 150 tons, 2.8 %
Armour: 573 tons, 10.8 %
Belts: 0 tons, 0.0 %, Armament: 64 tons, 1.2 %, Armour Deck: 469 tons, 8.9 %
Conning Tower: 39 tons, 0.7 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,156 tons, 40.8 %
Hull, fittings & equipment: 1,894 tons, 35.8 %
Fuel, ammunition & stores: 516 tons, 9.8 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 3.0

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
Excellent seaboat, comfortable and able to fight her guns in the heaviest weather

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.36
Shellfire needed to sink: 2,654 lbs / 1,204 Kg = 10.4 x 8.0 " / 203 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.6
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 81 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.26
Relative quality as seaboat: 1.63

Hull form characteristics:
Block coefficient: 0.530
Sharpness coefficient: 0.37
Hull speed coefficient 'M': 6.95
'Natural speed' for length: 19.90 kts
Power going to wave formation at top speed: 48 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 153.5 %
Relative accommodation and working space: 104.7 %
(Average = 100%)
Displacement factor: 87 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.02
(Structure weight / hull surface area: 90 lbs / square foot or 441 Kg / square metre)
Relative longitudinal hull strength: 1.81
(for 15.00 ft / 4.57 m average freeboard, freeboard adjustment 1.67 ft)
Relative composite hull strength: 1.08

Niitaka, Chosen 2nd Class Cruiser laid down 1901
Ships: 2. Niitaka, Tsushima.

Displacement:
3,076 t light; 3,214 t standard; 3,706 t normal; 4,085 t full load
Loading submergence 282 tons/feet

Dimensions:
335.00 ft x 44.00 ft x 16.00 ft (normal load)
102.11 m x 13.41 m x 4.88 m

Armament:
6 - 5.91" / 150 mm guns
10 - 2.95" / 75 mm guns
4 - 1.97" / 50 mm QF guns
Weight of broadside 762 lbs / 346 kg

Armour:
Belt 3.00" / 76 mm, ends unarmoured
Belts cover 145 % of normal area
Main gun shields 2.00" / 51 mm
Armour deck 1.00" / 25 mm, Conning tower 4.00" / 102 mm

Machinery:
Coal fired boilers, complex reciprocating steam engines
Direct drive, 2 shafts, 9,220 ihp / 6,878 Kw = 20.00 kts
Range 6,500nm at 10.00 kts

Complement:
237 - 308

Cost:
£0.381 million / $1.522 million

Distribution of weights at normal displacement:
Armament: 95 tons, 2.6 %
Armour: 543 tons, 14.7 %
Belts: 318 tons, 8.6 %, Armament: 21 tons, 0.6 %, Armour Deck: 183 tons, 4.9 %
Conning Tower: 21 tons, 0.6 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 1,378 tons, 37.2 %
Hull, fittings & equipment: 1,060 tons, 28.6 %
Fuel, ammunition & stores: 630 tons, 17.0 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 2.8

Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is cramped
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: 1.48
Shellfire needed to sink: 2,107 lbs / 956 Kg = 20.5 x 5.9 " / 150 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.6
(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: 0.16
Relative quality as seaboat: 1.27

Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.38
Hull speed coefficient 'M': 6.62
'Natural speed' for length: 18.30 kts
Power going to wave formation at top speed: 51 %
Trim: 55
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 140.1 %
Relative accommodation and working space: 87.3 %
(Average = 100%)
Displacement factor: 89 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.96
(Structure weight / hull surface area: 69 lbs / square foot or 336 Kg / square metre)
Relative longitudinal hull strength: 1.45
(for 11.00 ft / 3.35 m average freeboard, freeboard adjustment -1.42 ft)
Relative composite hull strength: 1.00

Hirado, Chosen 2nd Class Cruiser laid down 1910
Ships: 3. Hirado, Yahagi, Chikuma
Displacement:
4,018 t light; 4,200 t standard; 5,205 t normal; 5,987 t full load
Loading submergence 396 tons/feet

Dimensions:
450.00 ft x 46.00 ft x 16.00 ft (normal load)
137.16 m x 14.02 m x 4.88 m

Armament:
8 - 5.91" / 150 mm guns
4 - 2.95" / 75 mm guns
12 - 1.97" / 50 mm QF guns
24 - 0.98" / 25 mm guns
Weight of broadside 933 lbs / 423 kg
3 - 18.0" / 457.2 mm above water torpedoes

Armour:
Belt 3.00" / 76 mm, ends unarmoured
Belts cover 110 % of normal area
Main gun shields 3.00" / 76 mm, 2nd gun shields 1.00" / 25 mm
Armour deck 1.00" / 25 mm, Conning tower 4.00" / 102 mm

Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 2 shafts, 32,628 shp / 24,340 Kw = 27.00 kts
Range 9,000nm at 12.00 kts

Complement:
306 - 398

Cost:
£0.441 million / $1.764 million

Distribution of weights at normal displacement:
Armament: 117 tons, 2.2 %
Armour: 659 tons, 12.7 %
Belts: 323 tons, 6.2 %, Armament: 54 tons, 1.0 %, Armour Deck: 257 tons, 4.9 %
Conning Tower: 26 tons, 0.5 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 1,447 tons, 27.8 %
Hull, fittings & equipment: 1,796 tons, 34.5 %
Fuel, ammunition & stores: 1,186 tons, 22.8 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 2.4

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent
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: 1.28
Shellfire needed to sink: 5,630 lbs / 2,554 Kg = 54.7 x 5.9 " / 150 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1.0
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 71 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.26
Relative quality as seaboat: 1.22

Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.35
Hull speed coefficient 'M': 7.94
'Natural speed' for length: 21.21 kts
Power going to wave formation at top speed: 56 %
Trim: 58
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 107.7 %
Relative accommodation and working space: 128.0 %
(Average = 100%)
Displacement factor: 116 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.96
(Structure weight / hull surface area: 78 lbs / square foot or 378 Kg / square metre)
Relative longitudinal hull strength: 1.39
(for 16.00 ft / 4.88 m average freeboard, freeboard adjustment 2.71 ft)
Relative composite hull strength: 1.00

Hantan (Agano II), Chosen Light Cruiser laid down 1942

Displacement:
4,200 t light; 4,428 t standard; 5,175 t normal; 5,772 t full load

Dimensions: Length overall / water x beam x draught
483.01 ft / 465.00 ft x 46.00 ft x 17.00 ft (normal load)
147.22 m / 141.73 m x 14.02 m x 5.18 m

Armament:
8 - 5.00" / 127 mm guns (4x2 guns), 55.12lbs / 25.00kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 2.95" / 75.0 mm guns (4x2 guns), 12.00lbs / 5.44kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side ends, evenly spread
16 - 1.57" / 40.0 mm guns (2x8 guns), 2.00lbs / 0.91kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread, all raised mounts
12 - 0.98" / 25.0 mm guns (4x3 guns), 0.57lbs / 0.26kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
16 - 0.52" / 13.2 mm guns (4x4 guns), 0.09lbs / 0.04kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 577 lbs / 262 kg
Shells per gun, main battery: 350
16 - 24.0" / 609.6 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.00" / 51 mm 366.00 ft / 111.56 m 8.14 ft / 2.48 m
Ends: Unarmoured
Main Belt covers 121% of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm 1.00" / 25 mm 2.00" / 51 mm
2nd: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
3rd: 1.00" / 25 mm 1.00" / 25 mm -
4th: 1.00" / 25 mm 1.00" / 25 mm -

- Armour deck: 1.00" / 25 mm, Conning tower: 2.75" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 60,530 shp / 45,156 Kw = 33.00 kts
Range 10,300nm at 15.00 kts
Bunker at max displacement = 1,344 tons

Complement:
304 - 396

Cost:
£2.773 million / $11.090 million

Distribution of weights at normal displacement:
Armament: 80 tons, 1.5%
Armour: 611 tons, 11.8%
- Belts: 241 tons, 4.7%
- Torpedo bulkhead: 0 tons, 0.0%
- Armament: 79 tons, 1.5%
- Armour Deck: 274 tons, 5.3%
- Conning Tower: 18 tons, 0.3%
Machinery: 1,581 tons, 30.6%
Hull, fittings & equipment: 1,528 tons, 29.5%
Fuel, ammunition & stores: 975 tons, 18.8%
Miscellaneous weights: 400 tons, 7.7%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,349 lbs / 1,519 Kg = 53.6 x 5.0 " / 127 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 1.8 ft / 0.6 m
Roll period: 14.4 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.40
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.498
Length to Beam Ratio: 10.11 : 1
'Natural speed' for length: 24.59 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.00 ft / 7.92 m
- Forecastle (20%): 17.50 ft / 5.33 m
- Mid (50%): 17.50 ft / 5.33 m
- Quarterdeck (15%): 17.50 ft / 5.33 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 18.07 ft / 5.51 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 121.0%
- Above water (accommodation/working, high = better): 53.0%
Waterplane Area: 14,794 Square feet or 1,374 Square metres
Displacement factor (Displacement / loading): 107%
Structure weight / hull surface area: 58 lbs/sq ft or 285 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.69
- Longitudinal: 1.57
- Overall: 0.75
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped