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Wednesday, August 28th 2019, 10:19am

His Imperial Chinese Navy - Icebreakers (IB-XX)

Repository for data pertaining to subject class of vessels

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Wednesday, August 28th 2019, 10:21am

Index of Classes and Vessels

Cuiniao - Class
HICMS Cuiniao-1 (IB-01) - under construction
HICMS Cuiniao-2 (IB-02) - under construction


Shen Neng - Class
HICMS Shen Neng-1 (IB-03) - on trials
HICMS Shen Neng-2 (IB-04) - under construction
HICMS Shen Neng-3 (IB-05) - under construction
HICMS Shen Neng-4 (IB-06) - under construction

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Wednesday, August 28th 2019, 10:27am

Cuiniao - Class

Cuiniao
Icebreaker


Her hull was of unprecedented strength and structural integrity, with a relatively short length in proportion to the great power developed, a cut away forefoot, rounded bottom, and fore, aft and side heeling tanks. Diesel electric machinery was chosen for its controllability and resistance to damage.


Displacement:
4.560 t light; 4.721 t standard; 6.358 t normal; 7.667 t full load

Dimensions:
Length overall / water x beam x draught
295,25 ft / 288,71 ft x 74,15 ft x 19,36 ft (normal load)
89,99 m / 88,00 m x 22,60 m x 5,90 m

Armament:
2 - 4,53" / 115 mm guns (1x2 guns), 46,40lbs / 21,05kg shells, 1948 Model
Dual purpose guns in a turret (on a barbette)
on centreline forward
12 - 1,57" / 40,0 mm guns (3x4 guns), 1,95lbs / 0,89kg shells, 1948 Model
Anti-aircraft guns in deck mounts with hoists
on side, all amidships, all raised mounts - superfiring
6 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1948 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 3 raised mounts
Weight of broadside 118 lbs / 53 kg
Shells per gun, main battery: 450

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2,95" / 75 mm 187,66 ft / 57,20 m 11,15 ft / 3,40 m
Ends: 5,91" / 150 mm 101,02 ft / 30,79 m 11,15 ft / 3,40 m
Main Belt covers 100% of normal length

- Torpedo Bulkhead:
1,97" / 50 mm 187,66 ft / 57,20 m 17,62 ft / 5,37 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3,94" / 100 mm 1,57" / 40 mm 3,15" / 80 mm
2nd: 1,38" / 35 mm 0,39" / 10 mm -
3rd: 0,59" / 15 mm - -

- Armour deck: 0,59" / 15 mm, Conning tower: 1,38" / 35 mm

Machinery:
Diesel Internal combustion motors,
Electric cruising motors plus geared drives, 3 shafts, 5.241 shp / 3.910 Kw = 15,40 kts
Range 40.000nm at 12,80 kts
Bunker at max displacement = 4.259 tons

Complement:
355 - 462

Cost:
£1,416 million / $5,663 million

Distribution of weights at normal displacement:
Armament: 15 tons, 0,2%
Armour: 975 tons, 15,3%
- Belts: 530 tons, 8,3%
- Torpedo bulkhead: 241 tons, 3,8%
- Armament: 33 tons, 0,5%
- Armour Deck: 161 tons, 2,5%
- Conning Tower: 10 tons, 0,2%
Machinery: 128 tons, 2,0%
Hull, fittings & equipment: 2.693 tons, 42,4%
Fuel, ammunition & stores: 1.797 tons, 28,3%
Miscellaneous weights: 750 tons, 11,8%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
29.065 lbs / 13.184 Kg = 626,3 x 4,5 " / 115 mm shells or 12,3 torpedoes
Stability (Unstable if below 1.00): 1,46
Metacentric height 6,1 ft / 1,9 m
Roll period: 12,6 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0,01
Seaboat quality (Average = 1.00): 1,42

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,537
Length to Beam Ratio: 3,89 : 1
'Natural speed' for length: 16,99 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 17,95 ft / 5,47 m
- Forecastle (20%): 11,42 ft / 3,48 m
- Mid (50%): 11,42 ft / 3,48 m
- Quarterdeck (15%): 11,42 ft / 3,48 m
- Stern: 11,42 ft / 3,48 m
- Average freeboard: 11,94 ft / 3,64 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 31,8%
- Above water (accommodation/working, high = better): 90,4%
Waterplane Area: 14.759 Square feet or 1.371 Square metres
Displacement factor (Displacement / loading): 303%
Structure weight / hull surface area: 141 lbs/sq ft or 691 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,70
- Longitudinal: 3,78
- Overall: 1,84
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Torpedo bulkhead and armour used to simulate hull strengthening to combat sea ice.

low stowed cargo:
true radius of action 27500 nm on bunkers of 2946 tons;
additional aviation fuel - 750 tons
ballast - 500 tons
storage - 63 tons

Breakdown of Miscellaneous weights: 750 tons
armament:
two DC thrower - 40 tons
40 DCs @ 0.25 tons - 10 tons

electronics:
navigation electronics - 30 tons
climatic control system - 50 tons

aviation facilities:
helicopter canvas and handling system - 200 tons
helicopter landing pad - 50 tons
observation helicopter - 50 tons

salvage equipment:
salvage crane and associated equipment - 80 tons
towing gear - 20 tons
high-capacity pumps - 40 tons
emergency diesel generators - 10 tons

additional equipment:
room for additional crew (@ 2 tons) - 70 tons
"Baixiong" (tracked vehicle based on the Xiniu II tractor) - 20 tons
future growth - 100 tons


"Baixiong"
Vehicle is based on the artillery tractor Xiniu-II. There were seats for at least six expedition participants in the driver's cab with the navigation devices. The cabin was divided into several sections, including a common room, the radio cabin, galley and toilet. In order to be able to carry out repairs without having to leave the vehicle, the engine could be reached through a hatch. It weighed 20 tons, could carry up to 5 tons of cargo on board and pull sleds with a load of 40 tons.

Engine: V-12 diesel engine with 995 hp
Speed: 30 kph
Length: 8.5 m
Hight: 4.0 m
Width: 3.5 m
Range: ca. 1500 km
Gradeability: 30°
Volume: 50 m³ (Area: 28m²; Height: 2.1m)

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Wednesday, August 28th 2019, 10:35am

Shen Neng - Class

Shen Neng
Icebreaker & Tug

The hull has a typical tug shape and is divided into six sections by five bulkheads. The ships can be used as tugs of sea targets and in the winter as ice breakers.


Displacement:
584 t light; 601 t standard; 778 t normal; 920 t full load

Dimensions:
Length overall / water x beam x draught
131,68 ft / 127,46 ft x 31,82 ft x 12,20 ft (normal load)
40,14 m / 38,85 m x 9,70 m x 3,72 m

Armament:
2 - 1,57" / 40,0 mm guns (1x2 guns), 1,95lbs / 0,89kg shells, 1948 Model
Anti-aircraft guns in deck mount
on centreline forward
Weight of broadside 4 lbs / 2 kg
Shells per gun, main battery: 600

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Ends: Unarmoured

- Torpedo Bulkhead:
1,97" / 50 mm 82,84 ft / 25,25 m 10,73 ft / 3,27 m

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 1.006 shp / 750 Kw = 13,00 kts
Range 10.000nm at 12,00 kts
Bunker at max displacement = 319 tons

Complement:
73 - 95

Cost:
£0,181 million / $0,724 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0,1%
Armour: 65 tons, 8,3%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 65 tons, 8,3%
- Armament: 0 tons, 0,0%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 25 tons, 3,2%
Hull, fittings & equipment: 294 tons, 37,8%
Fuel, ammunition & stores: 194 tons, 25,0%
Miscellaneous weights: 200 tons, 25,7%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2.260 lbs / 1.025 Kg = 1.157,4 x 1,6 " / 40 mm shells or 1,7 torpedoes
Stability (Unstable if below 1.00): 1,01
Metacentric height 0,9 ft / 0,3 m
Roll period: 14,0 seconds
Steadiness - As gun platform (Average = 50 %): 90 %
- Recoil effect (Restricted arc if above 1.00): 0,01
Seaboat quality (Average = 1.00): 2,00

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,550
Length to Beam Ratio: 4,01 : 1
'Natural speed' for length: 11,29 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): 15,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 15,75 ft / 4,80 m
- Forecastle (20%): 14,76 ft / 4,50 m
- Mid (50%): 13,78 ft / 4,20 m (11,48 ft / 3,50 m aft of break)
- Quarterdeck (15%): 11,48 ft / 3,50 m
- Stern: 11,48 ft / 3,50 m
- Average freeboard: 13,05 ft / 3,98 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 108,1%
- Above water (accommodation/working, high = better): 94,3%
Waterplane Area: 2.831 Square feet or 263 Square metres
Displacement factor (Displacement / loading): 245%
Structure weight / hull surface area: 56 lbs/sq ft or 272 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,17
- Longitudinal: 15,79
- Overall: 1,52
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Torpedo bulkhead used to simulate hull strengthening to combat sea ice.

low stowed cargo:
true radius of action 5000 nm on bunkers of 169 tons;
imbalance stacking system with 2 eccentric wheels in the foredeck (150 tons)


Breakdown of Miscellaneous weights: 200 tons
two auxiliary diesel-electric generating sets - 25 tons each - total 50 tons
provision for stowed towing cabels and winch aft - 80 tons
Navigation and communication equipment (radar and other electronics) - 30 tons