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Repository for data pertaining to the subject

Wu Feng - Class
HICMS Wu Feng ( RV-01 ) - sunk 1946


Xue Long - Class
HICMS Xue Long ( RV-02 ) - Active


Nanjizhou - Class
HICMS Nanjizhou ( RV-03 ) - Active

HICMS Wu Feng
China Survey Ship & Despatch Vessel

moved to the "His Imperial Chinese Navy - Vessels no longer in service" - Folder

Xue Long - Class
Research Vessel

Displacement:
2.634 t light; 2.736 t standard; 3.352 t normal; 3.845 t full load

Dimensions:
Length overall / water x beam x draught
328,00 ft / 308,40 ft x 50,20 ft x 13,78 ft (normal load)
99,97 m / 94,00 m x 15,30 m x 4,20 m

Armament:
3 - 4,13" / 105 mm guns in single mounts, 35,32lbs / 16,02kg shells, 1945 Model
Breech loading guns in deck mounts with hoists
on centreline ends, majority aft, 1 raised mount aft
4 - 1,46" / 37,0 mm guns in single mounts, 1,55lbs / 0,70kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, all aft, all raised mounts - superfiring
2 - 0,31" / 7,9 mm guns in single mounts, 0,02lbs / 0,01kg shells, 1945 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 112 lbs / 51 kg
Shells per gun, main battery: 550

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,98" / 25 mm 0,39" / 10 mm -

Machinery:
Diesel Internal combustion engines plus batteries,
Electric cruising motors plus geared drives, 2 shafts, 6.090 shp / 4.543 Kw = 18,00 kts
Range 12.000nm at 14,00 kts
Bunker at max displacement = 1.108 tons

Complement:
219 - 286

Cost:
£0,867 million / $3,468 million

Distribution of weights at normal displacement:
Armament: 14 tons, 0,4%
Armour: 5 tons, 0,2%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 5 tons, 0,2%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 154 tons, 4,6%
Hull, fittings & equipment: 1.060 tons, 31,6%
Fuel, ammunition & stores: 718 tons, 21,4%
Miscellaneous weights: 1.400 tons, 41,8%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6.147 lbs / 2.788 Kg = 174,0 x 4,1 " / 105 mm shells or 1,7 torpedoes
Stability (Unstable if below 1.00): 1,07
Metacentric height 2,0 ft / 0,6 m
Roll period: 14,7 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0,06
Seaboat quality (Average = 1.00): 1,81

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,550
Length to Beam Ratio: 6,14 : 1
'Natural speed' for length: 17,56 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 17,00 degrees
Stern overhang: 11,98 ft / 3,65 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24,93 ft / 7,60 m
- Forecastle (10%): 23,13 ft / 7,05 m
- Mid (26%): 21,49 ft / 6,55 m (11,98 ft / 3,65 m aft of break)
- Quarterdeck (15%): 11,98 ft / 3,65 m
- Stern: 13,45 ft / 4,10 m
- Average freeboard: 14,93 ft / 4,55 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 65,2%
- Above water (accommodation/working, high = better): 133,2%
Waterplane Area: 10.804 Square feet or 1.004 Square metres
Displacement factor (Displacement / loading): 184%
Structure weight / hull surface area: 66 lbs/sq ft or 324 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,00
- Longitudinal: 2,31
- Overall: 1,09
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
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of Misc. Weight:
- 240 tons reserved for survey / research crew quarters - @ 4 tons per person
- 270 tons for laboratory
- 200 tons additional fresh water storage
- 200 tons additional food storage
- 173 tons scientific equipment storage
- 80 tons for cinema,library, lounges and other recreational facilities
- 50 tons refrigerating hold
- 50 tons for workshop
- 50 tons for additional deck handling gear - cranes, winches, sounding gear - and echo - sounding equipment
- 50 tons for electronic equipment (radar, sonar)
- 27 tons for climate control system
- 10 tons for additional diesel generators





Ships in Class:
HICMS Xue Long; laid down 1945

Nanjizhou - Class
Research Vessel

Displacement:
6.181 t light; 6.380 t standard; 7.676 t normal; 8.713 t full load

Dimensions:
Length overall / water x beam x draught
477,99 ft / 458,99 ft x 64,99 ft x 18,01 ft (normal load)
145,69 m / 139,90 m x 19,81 m x 5,49 m

Armament:
2 - 5,00" / 127 mm guns (1x2 guns), 62,50lbs / 28,35kg shells, 1946 Model
Dual purpose guns in a deck mount with hoist
on centreline forward
2 - 3,00" / 76,2 mm guns (1x2 guns), 13,50lbs / 6,12kg shells, 1946 Model
Automatic rapid fire guns in a deck mount with hoist
on centreline forward, all raised guns - superfiring
Weight of broadside 152 lbs / 69 kg
Shells per gun, main battery: 500

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3,00" / 76 mm 200,46 ft / 61,10 m 8,50 ft / 2,59 m
Ends: 5,91" / 150 mm 107,91 ft / 32,89 m 8,50 ft / 2,59 m
150,62 ft / 45,91 m Unarmoured ends
Main Belt covers 67% of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2,01" / 51 mm 0,98" / 25 mm 2,01" / 51 mm
2nd: 0,98" / 25 mm 0,98" / 25 mm 0,98" / 25 mm

Machinery:
Diesel Internal combustion engines plus batteries,
Electric cruising motors plus geared drives, 2 shafts, 11.524 shp / 8.597 Kw = 20,00 kts
Range 15.000nm at 15,00 kts
Bunker at max displacement = 2.334 tons

Complement:
409 - 533

Cost:
£1,937 million / $7,748 million

Distribution of weights at normal displacement:
Armament: 20 tons, 0,3%
Armour: 455 tons, 5,9%
- Belts: 442 tons, 5,8%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 14 tons, 0,2%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 288 tons, 3,7%
Hull, fittings & equipment: 2.919 tons, 38,0%
Fuel, ammunition & stores: 1.495 tons, 19,5%
Miscellaneous weights: 2.500 tons, 32,6%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
17.983 lbs / 8.157 Kg = 287,7 x 5,0 " / 127 mm shells or 3,4 torpedoes
Stability (Unstable if below 1.00): 1,04
Metacentric height 2,8 ft / 0,9 m
Roll period: 16,2 seconds
Steadiness - As gun platform (Average = 50 %): 96 %
- Recoil effect (Restricted arc if above 1.00): 0,05
Seaboat quality (Average = 1.00): 1,92

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0,500
Length to Beam Ratio: 7,06 : 1
'Natural speed' for length: 25,18 kts
Power going to wave formation at top speed: 42 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 19,00 degrees
Stern overhang: 8,50 ft / 2,59 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30,51 ft / 9,30 m
- Forecastle (20%): 24,51 ft / 7,47 m
- Mid (40%): 22,51 ft / 6,86 m (14,99 ft / 4,57 m aft of break)
- Quarterdeck (12%): 14,99 ft / 4,57 m
- Stern: 16,99 ft / 5,18 m
- Average freeboard: 19,20 ft / 5,85 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 51,1%
- Above water (accommodation/working, high = better): 168,4%
Waterplane Area: 20.669 Square feet or 1.920 Square metres
Displacement factor (Displacement / loading): 208%
Structure weight / hull surface area: 97 lbs/sq ft or 475 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,15
- Longitudinal: 1,96
- Overall: 1,22
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
Excellent seaboat, comfortable, can fire her guns in the heaviest weather


Breakdown of Miscellaneous Weight:
vehicles: 198 tons
- 25 tons for helicopter "Xueying (Snow Eagle)"
- 30 tons for DSV "Bian Sha (Sea Devil)"
- 5 tons for Bathysphere "Long Li"
- 138 tons for heli pad including all necessary assessories

Handling equipment: 555 tons
- 250 tons for additional deck handling gear - cranes, winches
- 255 tons for additional deepsea equipment
- 50 tons for heavy lift crane (lifting capacity: 40 tons)

Rescue & medical equipment: 152 tons
- 50 tons for diving chamber
- 50 tons for operation room
- 32 tons for 8 medical personnel (4 tons per person).
- 20 tons for 5 patient beds (4 t per patient).

Scientist equipment: 885 tons
- 400 tons for laboratories (dry lab 17m², chemical lab 20m², bio lab 22.5 m², physics lab 11m², photo lab 4 m², weather lab 2.7 m²)
- 100 tons for operations center
- 50 tons for workshop
- 260 tons reserved for survey / research crew quarters - @ 4 tons per person (65 scientists)
- 75 tons for library

electronic equipment: 160 tons
- 80 tons for degaussing coils.
- 20 tons for Active Sonar
- 10 tons for Hydrophones
- 30 tons for Air Search Radar
- 20 tons for Surface Search Radar

ship equipment: 550 tons
- 100 tons for clima control
- 100 tons additional storage for normal warehouse
- 50 tons additional storage fresh water
- 50 tons additional storage for drinking water
- 30 tons additional storage for dry provision
- 20 tons additional storage for wet provision
- 50 tons additional storage freezer
- 50 tons for auxiliary diesel generators (115 V)
- 50 tons for air compressor
- 50 tons for diving equipment (Compressed air cylinders etc)



Bian Sha (Sea Devil)
Deep Submersible Vehicle

Length: 16 m
Width: 3.3 m
Hight: 7.8 m
Tonnage: 28.6 tons
Payload: 1.450 kg
Crew: 1 pilot, 1 observer
Engine: 2 electric motors with each 1 kW
Speed: max. 1 kn
Sea endurance: 24 h
Diving depth: 4.500 m (normal) / 16.000 m (theoretical maximum)


Long Li
Bathysphere



Diameter: 1.5 m
Wall thickness: 40 mm
Diameter manhole: 35 cm
3 windows made of quartz glass: 20 cm diameter, 75 mm thickness
Weight (without passengers): 2300 kg




Ships in Class:
HICMS Nanjizhou; laid down 1946