This is the successor of the Shuihong-Class Sloop, further simplified and slightly enlarged version.
These ships were designed for pre-fabrication and were produced in two versions:
- Mine warfare vessel
- Anti-submarine vessel with extra depth charges
MWS-Version (Mine-Warfare-Ship)
Displacement:
678 t light; 717 t standard; 768 t normal; 808 t full load
Dimensions: Length overall / water x beam x draught
213,23 ft / 207,02 ft x 29,53 ft x 8,79 ft (normal load)
64,99 m / 63,10 m x 9,00 m x 2,68 m
Armament:
2 - 4,13" / 105 mm guns in single mounts, 35,32lbs / 16,02kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread
4 - 1,57" / 40,0 mm guns (1x4 guns), 1,95lbs / 0,88kg shells, 1942 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
2 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread, all raised mounts
4 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1942 Model
Machine guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 83 lbs / 38 kg
Shells per gun, main battery: 480
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,59" / 15 mm - -
- Conning tower: 1,38" / 35 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 2.311 shp / 1.724 Kw = 18,00 kts
Range 3.500nm at 12,00 kts
Bunker at max displacement = 91 tons
Complement:
72 - 94
Cost:
£0,260 million / $1,041 million
Distribution of weights at normal displacement:
Armament: 10 tons, 1,4%
Armour: 5 tons, 0,7%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 3 tons, 0,3%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 2 tons, 0,3%
Machinery: 60 tons, 7,9%
Hull, fittings & equipment: 502 tons, 65,3%
Fuel, ammunition & stores: 90 tons, 11,8%
Miscellaneous weights: 100 tons, 13,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2.023 lbs / 918 Kg = 57,3 x 4,1 " / 105 mm shells or 1,2 torpedoes
Stability (Unstable if below 1.00): 1,02
Metacentric height 0,8 ft / 0,3 m
Roll period: 13,5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,27
Seaboat quality (Average = 1.00): 1,76
Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0,500
Length to Beam Ratio: 7,01 : 1
'Natural speed' for length: 16,92 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 40
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: 17,06 ft / 5,20 m
- Forecastle (20%): 15,75 ft / 4,80 m (15,09 ft / 4,60 m aft of break)
- Mid (50%): 10,17 ft / 3,10 m
- Quarterdeck (20%): 10,17 ft / 3,10 m
- Stern: 10,17 ft / 3,10 m
- Average freeboard: 12,13 ft / 3,70 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 53,7%
- Above water (accommodation/working, high = better): 127,7%
Waterplane Area: 4.235 Square feet or 393 Square metres
Displacement factor (Displacement / loading): 248%
Structure weight / hull surface area: 68 lbs/sq ft or 331 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,42
- Longitudinal: 7,18
- Overall: 1,67
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:
--------------------------------------
20tons Minesweeping gear
10tons Minerail
70tons reload mines
ASW-Version (Anti-Submarine-Warfare)
Displacement:
647 t light; 675 t standard; 768 t normal; 842 t full load
Dimensions: Length overall / water x beam x draught
213,23 ft / 207,02 ft x 29,53 ft x 8,79 ft (normal load)
64,99 m / 63,10 m x 9,00 m x 2,68 m
Armament:
2 - 4,13" / 105 mm guns in single mounts, 35,32lbs / 16,02kg shells, 1942 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread
5 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0,79" / 20,0 mm guns (4x2 guns), 0,24lbs / 0,11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 82 lbs / 37 kg
Shells per gun, main battery: 250
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1,38" / 35 mm 0,59" / 15 mm -
2nd: 0,59" / 15 mm - -
- Armour deck: 0,59" / 15 mm, Conning tower: 2,17" / 55 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 6.324 shp / 4.717 Kw = 22,00 kts
Range 7.500nm at 11,00 kts
Bunker at max displacement = 166 tons
Complement:
72 - 94
Cost:
£0,346 million / $1,386 million
Distribution of weights at normal displacement:
Armament: 10 tons, 1,3%
Armour: 55 tons, 7,1%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 6 tons, 0,8%
- Armour Deck: 44 tons, 5,8%
- Conning Tower: 4 tons, 0,5%
Machinery: 165 tons, 21,5%
Hull, fittings & equipment: 317 tons, 41,3%
Fuel, ammunition & stores: 120 tons, 15,7%
Miscellaneous weights: 100 tons, 13,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1.146 lbs / 520 Kg = 32,4 x 4,1 " / 105 mm shells or 0,6 torpedoes
Stability (Unstable if below 1.00): 1,09
Metacentric height 1,0 ft / 0,3 m
Roll period: 12,7 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0,23
Seaboat quality (Average = 1.00): 1,12
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0,500
Length to Beam Ratio: 7,01 : 1
'Natural speed' for length: 14,39 kts
Power going to wave formation at top speed: 67 %
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: 17,06 ft / 5,20 m
- Forecastle (20%): 15,75 ft / 4,80 m (15,09 ft / 4,60 m aft of break)
- Mid (50%): 10,17 ft / 3,10 m
- Quarterdeck (20%): 10,17 ft / 3,10 m
- Stern: 10,17 ft / 3,10 m
- Average freeboard: 12,13 ft / 3,70 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 95,5%
- Above water (accommodation/working, high = better): 122,8%
Waterplane Area: 4.073 Square feet or 378 Square metres
Displacement factor (Displacement / loading): 135%
Structure weight / hull surface area: 43 lbs/sq ft or 211 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,87
- Longitudinal: 4,46
- Overall: 1,02
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Breakdown of Misc. Weight:
--------------------------------------
2 DC thrower @ 10 tons
2 DC rails @ 7.5 tons
100 DC reload ; DC 50kg = 5 tons
10 tons sonar
10 tons hydrophone
40 tons Storage