WesWorld

Displacement:
1.142 t light; 1.226 t standard; 1.329 t normal; 1.411 t full load

Dimensions:
Length overall / water x beam x draught
256,47 ft / 246,72 ft x 33,79 ft x 11,15 ft (normal load)
78,17 m / 75,20 m x 10,30 m x 3,40 m

Armament:
4 - 4,72" / 120 mm guns (2x2 guns), 52,72lbs / 23,92kg shells, 1946 Model
Dual purpose guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,89kg shells, 1946 Model
Anti-aircraft guns in deck mounts with hoists
on centreline, evenly spread, all raised mounts
8 - 0,79" / 20,0 mm guns (2x4 guns), 0,24lbs / 0,11kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on centreline, all aft, all raised mounts - superfiring
4 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 222 lbs / 101 kg
Shells per gun, main battery: 450

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2,36" / 60 mm 164,04 ft / 50,00 m 7,55 ft / 2,30 m
Ends: Unarmoured
Main Belt covers 102% of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2,36" / 60 mm 1,18" / 30 mm 2,36" / 60 mm
2nd: 1,57" / 40 mm - -
3rd: 0,98" / 25 mm - -

- Armour deck: 0,98" / 25 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 8.061 shp / 6.013 Kw = 22,00 kts
Range 5.000nm at 12,00 kts
Bunker at max displacement = 185 tons

Complement:
109 - 143

Cost:
£0,648 million / $2,593 million

Distribution of weights at normal displacement:
Armament: 28 tons, 2,1%
Armour: 270 tons, 20,3%
- Belts: 125 tons, 9,4%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 44 tons, 3,3%
- Armour Deck: 101 tons, 7,6%
- Conning Tower: 0 tons, 0,0%
Machinery: 201 tons, 15,2%
Hull, fittings & equipment: 503 tons, 37,9%
Fuel, ammunition & stores: 187 tons, 14,1%
Miscellaneous weights: 140 tons, 10,5%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2.028 lbs / 920 Kg = 38,5 x 4,7 " / 120 mm shells or 0,9 torpedoes
Stability (Unstable if below 1.00): 1,07
Metacentric height 1,1 ft / 0,3 m
Roll period: 13,4 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0,36
Seaboat quality (Average = 1.00): 1,03

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,500
Length to Beam Ratio: 7,30 : 1
'Natural speed' for length: 15,71 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25,00 degrees
Stern overhang: 1,64 ft / 0,50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 17,39 ft / 5,30 m
- Forecastle (20%): 11,48 ft / 3,50 m
- Mid (50%): 11,48 ft / 3,50 m
- Quarterdeck (15%): 11,48 ft / 3,50 m
- Stern: 11,48 ft / 3,50 m
- Average freeboard: 11,96 ft / 3,64 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 80,5%
- Above water (accommodation/working, high = better): 111,5%
Waterplane Area: 5.555 Square feet or 516 Square metres
Displacement factor (Displacement / loading): 128%
Structure weight / hull surface area: 55 lbs/sq ft or 266 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,89
- Longitudinal: 2,76
- Overall: 1,00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate

Displacement:
297 t light; 306 t standard; 321 t normal; 333 t full load

Dimensions:
Length overall / water x beam x draught
147,99 ft / 140,42 ft x 21,65 ft x 8,20 ft (normal load)
45,11 m / 42,80 m x 6,60 m x 2,50 m

Armament:
4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,89kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread
Weight of broadside 8 lbs / 4 kg
Shells per gun, main battery: 500

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 7.758 shp / 5.787 Kw = 24,80 kts
Range 1.500nm at 12,00 kts
Bunker at max displacement = 27 tons

Complement:
37 - 49

Cost:
£0,224 million / $0,894 million

Distribution of weights at normal displacement:
Armament: 1 tons, 0,3%
Machinery: 145 tons, 45,3%
Hull, fittings & equipment: 101 tons, 31,5%
Fuel, ammunition & stores: 24 tons, 7,4%
Miscellaneous weights: 50 tons, 15,6%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
131 lbs / 60 Kg = 67,3 x 1,6 " / 40 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,21
Metacentric height 0,7 ft / 0,2 m
Roll period: 10,7 seconds
Steadiness - As gun platform (Average = 50 %): 20 %
- Recoil effect (Restricted arc if above 1.00): 0,02
Seaboat quality (Average = 1.00): 0,21

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,450
Length to Beam Ratio: 6,48 : 1
'Natural speed' for length: 11,85 kts
Power going to wave formation at top speed: 79 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 20,00 degrees
Stern overhang: 2,79 ft / 0,85 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 13,12 ft / 4,00 m
- Forecastle (20%): 9,19 ft / 2,80 m
- Mid (50%): 9,19 ft / 2,80 m
- Quarterdeck (20%): 9,19 ft / 2,80 m
- Stern: 9,19 ft / 2,80 m
- Average freeboard: 9,50 ft / 2,90 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 166,0%
- Above water (accommodation/working, high = better): 91,7%
Waterplane Area: 1.939 Square feet or 180 Square metres
Displacement factor (Displacement / loading): 72%
Structure weight / hull surface area: 26 lbs/sq ft or 126 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,63
- Longitudinal: 5,82
- Overall: 0,79
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability

I cannot find technical faults in the design of the large customs cruiser, however…

1 – Putting the 120mm dual purpose guns in turrets (with barbettes) on such a small hull is questionable. A deck mount with hoist would suffice and would be so much more economical.

2- The amount of belt armor on such a small vessel seems overkill. Likewise the gun armor for the main armament.

3 – Where would such a well-armed vessel be ‘enforcing customs’? Unless the term is used generically like US Coast Guard cutters, it seems far too large and too well armed for simple customs enforcement.


The small customs cruiser is another matter.

1 – Its speed is excessive for its probable mission, but has been raised to that level to escape the provision of the Gentlemen’s rules regarding the minimum strength of vessels.

2- This in turn has led to extremely poor sea-boat ratings for a vessel that should be capable of carrying out its duties in all weathers.

Quoted

The amount of belt armor on such a small vessel seems overkill. Likewise the gun armor for the main armament.

If the gun mount was mass produced I could understand it if the armor is like that when many other ships already have that mount in use with those armor thicknesses. I try to do that with the various Japanese guns so you have for example 3"/1"/2" for all the the twin 5" turrets on most ships (there are a few exceptions).

... but when I look at the various Chinese vessels and see all these Chinese guns between 115mm and 140mm...

Quoted

- 140mm guns
- 135mm guns
- 127mm guns
- 125mm guns
- 120mm guns
- 119mm guns
- 115mm guns

... then it does not look to me that the Chinese are mass producing a single type turret for a specific caliber. Their turrets will probably be all over the place just like the gun calibers.

It kind of surprises me that the Chinese are not trying to work towards a single caliber to replace all those guns with the planning of new ships as well as with the planning of refits/rebuilds where guns are being replaced.

Quoted

Where would such a well-armed vessel be ‘enforcing customs’? Unless the term is used generically like US Coast Guard cutters, it seems far too large and too well armed for simple customs enforcement.

Probably the Chinese intend to do the customs enforcing close to the waters of other nations.

Quoted from "BruceDuncan"

I cannot find technical faults in the design of the large customs cruiser, however…
1 – Putting the 120mm dual purpose guns in turrets (with barbettes) on such a small hull is questionable. A deck mount with hoist would suffice and would be so much more economical.

Thanks for the feedback ...I also thought that Mount & Hoist were perfectly adequate. So when the ship is laid down, the switch will be done.

Quoted from "BruceDuncan"

2- The amount of belt armor on such a small vessel seems overkill. Likewise the gun armor for the main armament.

The draft is based, more or less, on a real vessel and this had such amount of belt armor. But i think, as you said, it's a little bit of overkill and so will be reduced.

Quoted from "BruceDuncan"

3 – Where would such a well-armed vessel be ‘enforcing customs’? Unless the term is used generically like US Coast Guard cutters, it seems far too large and too well armed for simple customs enforcement.

The term is used more generically.

Quoted from "BruceDuncan"

The small customs cruiser is another matter.
1 – Its speed is excessive for its probable mission, but has been raised to that level to escape the provision of the Gentlemen’s rules regarding the minimum strength of vessels.
2- This in turn has led to extremely poor sea-boat ratings for a vessel that should be capable of carrying out its duties in all weathers.

This is the problem :/ the cat bite itself in it's tail. I will take a closer look ... may be there will be some redesign before laying down.

Displacement:
1.158 t light; 1.226 t standard; 1.382 t normal; 1.507 t full load

Dimensions:
Length overall / water x beam x draught
254,69 ft / 246,72 ft x 33,79 ft x 11,15 ft (normal load)
77,63 m / 75,20 m x 10,30 m x 3,40 m

Armament:
4 - 4,53" / 115 mm guns (2x2 guns), 46,40lbs / 21,05kg shells, 1946 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread
4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,88kg shells, 1946 Model
Anti-aircraft guns in deck mounts with hoists
on centreline, evenly spread, all raised mounts
8 - 0,79" / 20,0 mm guns (2x4 guns), 0,24lbs / 0,11kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on centreline, all aft, all raised mounts - superfiring
4 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 196 lbs / 89 kg
Shells per gun, main battery: 350

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0,98" / 25 mm 164,04 ft / 50,00 m 7,55 ft / 2,30 m
Ends: Unarmoured
Main Belt covers 102% of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1,97" / 50 mm 0,98" / 25 mm -
2nd: 1,57" / 40 mm - -
3rd: 0,98" / 25 mm - -

- Conning tower: 0,98" / 25 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 9.012 shp / 6.723 Kw = 22,40 kts
Range 3.500nm at 16,00 kts
Bunker at max displacement = 281 tons

Complement:
113 - 147

Cost:
£0,657 million / $2,628 million

Distribution of weights at normal displacement:
Armament: 25 tons, 1,8%
Armour: 73 tons, 5,3%
- Belts: 52 tons, 3,8%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 18 tons, 1,3%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 3 tons, 0,2%
Machinery: 225 tons, 16,3%
Hull, fittings & equipment: 696 tons, 50,4%
Fuel, ammunition & stores: 223 tons, 16,2%
Miscellaneous weights: 140 tons, 10,1%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2.230 lbs / 1.011 Kg = 48,0 x 4,5 " / 115 mm shells or 0,9 torpedoes
Stability (Unstable if below 1.00): 1,04
Metacentric height 1,1 ft / 0,3 m
Roll period: 13,8 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0,39
Seaboat quality (Average = 1.00): 1,21

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0,520
Length to Beam Ratio: 7,30 : 1
'Natural speed' for length: 15,71 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 17,39 ft / 5,30 m
- Forecastle (20%): 15,09 ft / 4,60 m (13,12 ft / 4,00 m aft of break)
- Mid (50%): 13,12 ft / 4,00 m
- Quarterdeck (15%): 13,12 ft / 4,00 m
- Stern: 13,12 ft / 4,00 m
- Average freeboard: 13,70 ft / 4,18 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 80,1%
- Above water (accommodation/working, high = better): 125,2%
Waterplane Area: 5.658 Square feet or 526 Square metres
Displacement factor (Displacement / loading): 161%
Structure weight / hull surface area: 68 lbs/sq ft or 333 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,12
- Longitudinal: 5,18
- Overall: 1,31
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Displacement:
308 t light; 316 t standard; 332 t normal; 344 t full load

Dimensions:
Length overall / water x beam x draught
148,46 ft / 140,42 ft x 20,34 ft x 9,68 ft (normal load)
45,25 m / 42,80 m x 6,20 m x 2,95 m

Armament:
2 - 1,57" / 40,0 mm guns (1x2 guns), 1,95lbs / 0,88kg shells, 1946 Model
Anti-aircraft guns in deck mount
on centreline forward
Weight of broadside 4 lbs / 2 kg
Shells per gun, main battery: 500

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 6.976 shp / 5.204 Kw = 24,30 kts
Range 500nm at 17,60 kts
Bunker at max displacement = 29 tons

Complement:
38 - 50

Cost:
£0,234 million / $0,935 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0,1%
Machinery: 156 tons, 46,9%
Hull, fittings & equipment: 127 tons, 38,3%
Fuel, ammunition & stores: 24 tons, 7,1%
Miscellaneous weights: 25 tons, 7,5%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
141 lbs / 64 Kg = 72,2 x 1,6 " / 40 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,00
Metacentric height 0,5 ft / 0,1 m
Roll period: 12,6 seconds
Steadiness - As gun platform (Average = 50 %): 65 %
- Recoil effect (Restricted arc if above 1.00): 0,03
Seaboat quality (Average = 1.00): 1,31

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0,420
Length to Beam Ratio: 6,90 : 1
'Natural speed' for length: 11,85 kts
Power going to wave formation at top speed: 77 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 17,00 degrees
Stern overhang: 2,62 ft / 0,80 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 17,72 ft / 5,40 m
- Forecastle (18%): 15,75 ft / 4,80 m (13,12 ft / 4,00 m aft of break)
- Mid (50%): 13,12 ft / 4,00 m
- Quarterdeck (18%): 13,12 ft / 4,00 m
- Stern: 13,12 ft / 4,00 m
- Average freeboard: 13,72 ft / 4,18 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 161,1%
- Above water (accommodation/working, high = better): 117,1%
Waterplane Area: 1.781 Square feet or 165 Square metres
Displacement factor (Displacement / loading): 88%
Structure weight / hull surface area: 22 lbs/sq ft or 106 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 23,10
- Overall: 0,73
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily