Jiangkai - class
Coastal Defense Ship
Displacement:
1.982 t light; 2.085 t standard; 2.303 t normal; 2.477 t full load
Dimensions:
Length overall / water x beam x draught
388,22 ft / 377,30 ft x 41,01 ft x 12,40 ft (normal load)
118,33 m / 115,00 m x 12,50 m x 3,78 m
Armament:
4 - 5,91" / 150 mm guns (2x2 guns), 110,01lbs / 49,90kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 3,46" / 88,0 mm guns (4x2 guns), 20,79lbs / 9,43kg shells, 1942 Model
Dual purpose guns in deck mounts
on side, all amidships, 2 raised mounts - superfiring
8 - 1,57" / 40,0 mm guns (4x2 guns), 1,95lbs / 0,89kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
8 - 0,79" / 20,0 mm guns (4x2 guns), 0,24lbs / 0,11kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 624 lbs / 283 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2,76" / 70 mm 229,66 ft / 70,00 m 7,71 ft / 2,35 m
Ends: Unarmoured
Main Belt covers 94% of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3,15" / 80 mm 1,38" / 35 mm 3,15" / 80 mm
2nd: 0,98" / 25 mm 0,59" / 15 mm -
3rd: 0,59" / 15 mm - -
4th: 0,39" / 10 mm - -
- Armour deck: 1,38" / 35 mm, Conning tower: 4,72" / 120 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 17.427 shp / 13.000 Kw = 26,08 kts
Range 4.500nm at 15,00 kts
Bunker at max displacement = 392 tons
Complement:
166 - 216
Cost:
£1,245 million / $4,980 million
Distribution of weights at normal displacement:
Armament: 74 tons, 3,2%
Armour: 562 tons, 24,4%
- Belts: 206 tons, 8,9%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 92 tons, 4,0%
- Armour Deck: 246 tons, 10,7%
- Conning Tower: 18 tons, 0,8%
Machinery: 455 tons, 19,8%
Hull, fittings & equipment: 840 tons, 36,5%
Fuel, ammunition & stores: 321 tons, 13,9%
Miscellaneous weights: 50 tons, 2,2%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2.627 lbs / 1.191 Kg = 25,5 x 5,9 " / 150 mm shells or 0,9 torpedoes
Stability (Unstable if below 1.00): 1,16
Metacentric height 1,7 ft / 0,5 m
Roll period: 13,0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,52
Seaboat quality (Average = 1.00): 1,30
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,420
Length to Beam Ratio: 9,20 : 1
'Natural speed' for length: 19,42 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 54
Bow angle (Positive = bow angles forward): 20,00 degrees
Stern overhang: 3,28 ft / 1,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21,00 ft / 6,40 m
- Forecastle (20%): 17,72 ft / 5,40 m
- Mid (50%): 17,72 ft / 5,40 m (9,84 ft / 3,00 m aft of break)
- Quarterdeck (15%): 9,84 ft / 3,00 m
- Stern: 9,84 ft / 3,00 m
- Average freeboard: 14,04 ft / 4,28 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 92,2%
- Above water (accommodation/working, high = better): 149,2%
Waterplane Area: 9.647 Square feet or 896 Square metres
Displacement factor (Displacement / loading): 109%
Structure weight / hull surface area: 54 lbs/sq ft or 263 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,69
- Longitudinal: 1,41
- Overall: 0,75
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Breakdown of Miscellaneous Weights:
50tons for radar
------------
Ships in Class:
HICMS Jiangkai; laid down 1942