WesWorld

Repository for data relating to vessels used for patroling the big chinese rivers (Yangtze River / Pearl River / Yellow River) and canals (Grand Canal)

Youkan - Class
HICMS Youkan 200 ( RPB-01 ) - Active
HICMS Youkan 201 ( RPB-02 ) - Active
HICMS Youkan 202 ( RPB-03 ) - Active
HICMS Youkan 203 ( RPB-04 ) - Active
HICMS Youkan 204 ( RPB-05 ) - Active
HICMS Youkan 205 ( RPB-06 ) - Active
HICMS Youkan 206 ( RPB-07 ) - Active
HICMS Youkan 207 ( RPB-08 ) - Active
HICMS Youkan 208 ( RPB-09 ) - Active


River - Class
HICMS Zhu Jiang ( RPB-10 ) - Active
HICMS Meidong He ( RPB-11 ) - Active
HICMS Hong He ( RPB-12 ) - Active
HICMS Yuan He ( RPB-13 ) - Active
HICMS Bei Jiang ( RPB-14 ) - Active
HICMS Dong Jiang ( RPB-15 ) - Active
HICMS Han Jiang ( RPB-16 ) - Active
HICMS Mei Jiang ( RPB-17 ) - Active
HICMS Ning Jiang ( RPB-18 ) - Active
HICMS Ting Jiang ( RPB-19 ) - Active
HICMS Dajing He ( RPB-20 ) - Active
HICMS Yu Jiang ( RPB-21 ) - Active
HICMS Yong Jiang ( RPB-22 ) - Active
HICMS Xun Jiang ( RPB-23 ) - Active
HICMS Qian Jiang ( RPB-24 ) - Active
HICMS Rong Jiang ( RPB-25 ) - Active
HICMS Nanpan Jiang ( RPB-26 ) - Active
HICMS Beipan Jiang ( RPB-27 ) - Active
HICMS Li Jiang ( RPB-28 ) - Active
HICMS Gui Jiang ( RPB-29 ) - Active


Shokai - Class
HICMS Shokai-1 ( RPB-30 ) - Active
HICMS Shokai-2 ( RPB-31 ) - Active
HICMS Shokai-3 ( RPB-32 ) - Active
HICMS Shokai-4 ( RPB-33 ) - Active
HICMS Shokai-5 ( RPB-34 ) - Active
HICMS Shokai-6 ( RPB-35 ) - Active
HICMS Shokai-7 ( RPB-36 ) - Active
HICMS Shokai-8 ( RPB-37 ) - Active
HICMS Shokai-9 ( RPB-38 ) - Active
HICMS Shokai-10 ( RPB-39 ) - Active
HICMS Shokai-11 ( RPB-40 ) - Active
HICMS Shokai-12 ( RPB-41 ) - Active
HICMS Shokai-13 ( RPB-42 ) - Active
HICMS Shokai-14 ( RPB-43 ) - Active
HICMS Shokai-15 ( RPB-44 ) - Active
HICMS Shokai-16 ( RPB-45 ) - Active
HICMS Shokai-17 ( RPB-46 ) - Active
HICMS Shokai-18 ( RPB-47 ) - Active
HICMS Shokai-19 ( RPB-48 ) - Active
HICMS Shokai-20 ( RPB-49 ) - Active
HICMS Shokai-21 ( RPB-50 ) - Active
HICMS Shokai-22 ( RPB-51 ) - Active
HICMS Shokai-23 ( RPB-52 ) - Active
HICMS Shokai-24 ( RPB-53 ) - Active

Youkan - Class
River Patrol Boat

Dimensions:
Length (Total): 15,95 m
Beam: 3,50 m
Draft: 1,10 m
Displacement (light): 18 t
Displacement (normal): 24 t
Engines: 2 Huang-Po 12 cylinder aircraft engines
Total Power: 1650 shp
Crew: 11 men
Speed: 32 kn
Range: 225 miles at 25 kn

Weapons:
2x 2cm MG
2x 45 cm Torpedo tubes
Mines: up to 4





Ships in Class:
HICMS Youkan-200; laid down 1931
HICMS Youkan-201; laid down 1931
HICMS Youkan-202; laid down 1932
HICMS Youkan-203; laid down 1932
HICMS Youkan-204; laid down 1933
HICMS Youkan-205; laid down 1933
HICMS Youkan-206; laid down 1934
HICMS Youkan-207; laid down 1934
HICMS Youkan-208; laid down 1934

River - Class
River Patrol Boat

Displacement:
187 t light; 199 t standard; 219 t normal; 235 t full load

Dimensions:
Length overall / water x beam x draught
140,93 ft / 134,51 ft x 22,97 ft x 5,91 ft (normal load)
42,96 m / 41,00 m x 7,00 m x 1,80 m

Armament:
2 - 3,00" / 76,2 mm guns in single mounts, 13,50lbs / 6,12kg shells, 1943 Model
Dual purpose guns in deck mounts
on centreline ends, evenly spread
2 - 1,57" / 40,0 mm guns (1x2 guns), 1,95lbs / 0,89kg shells, 1942 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
2 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 31 lbs / 14 kg
Shells per gun, main battery: 400

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0,98" / 25 mm 78,74 ft / 24,00 m 7,22 ft / 2,20 m
Ends: Unarmoured
Main Belt covers 90% of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1,18" / 30 mm 0,79" / 20 mm -
2nd: 0,59" / 15 mm - -
3rd: 0,39" / 10 mm - -

- Armour deck: 0,20" / 5 mm, Conning tower: 0,79" / 20 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 1.340 shp / 1.000 Kw = 18,51 kts
Range 3.000nm at 12,00 kts
Bunker at max displacement = 36 tons

Complement:
27 - 36

Cost:
£0,096 million / $0,384 million

Distribution of weights at normal displacement:
Armament: 4 tons, 1,8%
Armour: 37 tons, 17,0%
- Belts: 25 tons, 11,4%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 4 tons, 2,0%
- Armour Deck: 7 tons, 3,3%
- Conning Tower: 1 tons, 0,3%
Machinery: 35 tons, 15,8%
Hull, fittings & equipment: 96 tons, 43,9%
Fuel, ammunition & stores: 32 tons, 14,7%
Miscellaneous weights: 15 tons, 6,9%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
511 lbs / 232 Kg = 37,9 x 3,0 " / 76 mm shells or 0,5 torpedoes
Stability (Unstable if below 1.00): 1,21
Metacentric height 0,8 ft / 0,2 m
Roll period: 10,9 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0,10
Seaboat quality (Average = 1.00): 1,05

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0,420
Length to Beam Ratio: 5,86 : 1
'Natural speed' for length: 14,07 kts
Power going to wave formation at top speed: 68 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 20,00 degrees
Stern overhang: 1,64 ft / 0,50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 13,12 ft / 4,00 m
- Forecastle (25%): 8,53 ft / 2,60 m
- Mid (50%): 8,53 ft / 2,60 m
- Quarterdeck (15%): 8,53 ft / 2,60 m
- Stern: 8,53 ft / 2,60 m
- Average freeboard: 8,99 ft / 2,74 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 75,8%
- Above water (accommodation/working, high = better): 120,3%
Waterplane Area: 1.999 Square feet or 186 Square metres
Displacement factor (Displacement / loading): 143%
Structure weight / hull surface area: 29 lbs/sq ft or 140 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,83
- Longitudinal: 5,57
- Overall: 1,00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent

Breakdown of Miscellaneous Weights:
- 15tons for electronic equipment


Thanks to Hoo for the drawing and the sim



Ships in Class:
HICMS Zhu Jiang; laid down 1943
HICMS Meidong He; laid down 1943
HICMS Hong He; laid down 1943
HICMS Yuan He; laid down 1943
HICMS Bei Jiang; laid down 1943
HICMS Dong Jiang; laid down 1943
HICMS Han Jiang; laid down 1943
HICMS Mei Jiang; laid down 1943
HICMS Ning Jiang; laid down 1943
HICMS Ting Jiang; laid down 1943

Shokai - Class
River Patrol Boat

Dimensions
Displacement: 98 t
Length (Total): 29,5m
Beam: 5,0m

Weapons
2x 25mm Dual-Purpose-Guns
2x 13mm MG

Engines
Engines: 2
Shafts: 2
Type: Huang Po HP1000 16cyl diesel engine

Performance
Total Performance: 2100 shp
Speed: 25.3 kts
Range: 500 miles





Ships in Class:
HICMS Shokai-1; laid down 1936
HICMS Shokai-2; laid down 1936
HICMS Shokai-3; laid down 1936
HICMS Shokai-4; laid down 1936
HICMS Shokai-5; laid down 1937
HICMS Shokai-6; laid down 1937
HICMS Shokai-7; laid down 1937
HICMS Shokai-8; laid down 1937
HICMS Shokai-9; laid down 1938
HICMS Shokai-10; laid down 1938
HICMS Shokai-11; laid down 1938
HICMS Shokai-12; laid down 1938
HICMS Shokai-13; laid down 1939
HICMS Shokai-14; laid down 1939
HICMS Shokai-15; laid down 1939
HICMS Shokai-16; laid down 1939
HICMS Shokai-17; laid down 1940
HICMS Shokai-18; laid down 1940
HICMS Shokai-19; laid down 1940
HICMS Shokai-20; laid down 1940
HICMS Shokai-21; laid down 1941
HICMS Shokai-22; laid down 1941
HICMS Shokai-23; laid down 1941
HICMS Shokai-24; laid down 1941