WesWorld

As a complement to the Dagu-class, the CNDO developed according to a list of requirements a ...

Fishermen protecting Vessel and subchaser

Displacement:
314 t light; 331 t standard; 384 t normal; 426 t full load

Dimensions: Length overall / water x beam x draught
181,87 ft / 176,02 ft x 27,69 ft x 6,89 ft (normal load)
55,43 m / 53,65 m x 8,44 m x 2,10 m

Armament:
1 - 4,13" / 105 mm guns in single mounts, 35,32lbs / 16,02kg shells, 1941 Model
Dual purpose gun in a deck mount with hoist
on centreline forward
8 - 1,57" / 40,0 mm guns (2x4 guns), 1,95lbs / 0,88kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread, all raised mounts
1 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1941 Model
Machine gun in deck mount
on centreline aft, 1 raised gun
Weight of broadside 51 lbs / 23 kg
Shells per gun, main battery: 250

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,98" / 25 mm - -
2nd: 0,59" / 15 mm - -

- Conning tower: 1,38" / 35 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 1 shaft, 1.504 shp / 1.122 Kw = 18,00 kts
Range 5.000nm at 12,80 kts
Bunker at max displacement = 96 tons

Complement:
43 - 56

Cost:
£0,136 million / $0,543 million

Distribution of weights at normal displacement:
Armament: 6 tons, 1,7%
Armour: 5 tons, 1,2%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 3 tons, 0,8%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 2 tons, 0,4%
Machinery: 40 tons, 10,4%
Hull, fittings & equipment: 194 tons, 50,5%
Fuel, ammunition & stores: 69 tons, 18,1%
Miscellaneous weights: 70 tons, 18,2%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
922 lbs / 418 Kg = 26,1 x 4,1 " / 105 mm shells or 0,7 torpedoes
Stability (Unstable if below 1.00): 1,06
Metacentric height 0,8 ft / 0,2 m
Roll period: 12,9 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0,20
Seaboat quality (Average = 1.00): 1,53

Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak, raised quarterdeck
and transom stern
Block coefficient: 0,400
Length to Beam Ratio: 6,36 : 1
'Natural speed' for length: 16,02 kts
Power going to wave formation at top speed: 58 %
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: 16,08 ft / 4,90 m
- Forecastle (20%): 15,75 ft / 4,80 m (14,76 ft / 4,50 m aft of break)
- Mid (50%): 10,50 ft / 3,20 m (6,56 ft / 2,00 m aft of break)
- Quarterdeck (15%): 7,55 ft / 2,30 m (6,89 ft / 2,10 m before break)
- Stern: 8,20 ft / 2,50 m
- Average freeboard: 10,50 ft / 3,20 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 68,3%
- Above water (accommodation/working, high = better): 130,4%
Waterplane Area: 3.114 Square feet or 289 Square metres
Displacement factor (Displacement / loading): 187%
Structure weight / hull surface area: 38 lbs/sq ft or 187 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,88
- Longitudinal: 4,80
- Overall: 1,05
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: 70tons
------------------------------------------------
2 DC thrower @ 10 tons
2 DC rails @ 7.5 tons
100 DC each DC: 50kg : 5 tons
10 tons sonar
10 tons hydrophone
10 tons storage

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

They have everything they need for their missions.

Why does a fishery protection vessel need such heavy armament? On 330 tons you really put a tremendous amount of firepower - that needs lots of crew, ammo and maintenance while it also raises the building costs. Doesn´t make sense to me.

The other vesels are more like one would expect in WesWorld, although they also are heavily armed what makes me wonder if especially the mine warefare ships will have enough deckspace to be useful in ther original purpose.

IN general I´d like to see some drawings of these vessels to see how you plan to place the guns, what arcs they will have and how much superstructure you think is required for all the crews and equipement.

You understand, that the drawings are at present TOP SECRET, but if you want, i could send a PM to my south african friends

Yeah, please do so...

I think the ASW and MSW variants are inverted. The MSW version has a transom stern, which isn't something you want on a minesweeper (or on a slow ship, period), and the ASW ship doesn't have a transom stern.

Really - you don't need two classes at all. Just use the ASW variant (the one with no transom), give them some paravanes, and it's a perfectly fine ship for ASW *and* minesweeping.

I'd suggest using the money to build more modern destroyers, not sloops. You could use all those old DDs as sloops, and build new DDs to replace them.

Well, I´ve seen the drawings and have to admit, deckspace is not a problem. It´s all reasonably fitted. In general it reminds me a bit of the Barbara refits (mainly adding AA guns) the German navy started late in the war.

However, I still wonder if the crews and ammo will fit. During WW2 Germany could accept cramped crew quarters and the like, being in a major conflict and about loosing it. Here, however, we have China building those ships in peace times. So I still feel it´s too much.

EDIT: Well, ONE of the AA guns on the ASW design is not placed very well (between bridge and funnel) and will be of little use. But that´s it.

Línchóng - Class
Aircraft Salvage Ship

Displacement:
193 t light; 198 t standard; 249 t normal; 289 t full load

Dimensions: Length overall / water x beam x draught
124,44 ft / 120,73 ft x 21,98 ft x 8,20 ft (normal load)
37,93 m / 36,80 m x 6,70 m x 2,50 m

Armament:
1 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1941 Model
Anti-aircraft gun in deck mount
on centreline forward
Weight of broadside 0 lbs / 0 kg
Shells per gun, main battery: 300

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 806 shp / 601 Kw = 15,00 kts
Range 3.000nm at 15,00 kts
Bunker at max displacement = 91 tons

Complement:
30 - 40

Cost:
£0,060 million / $0,241 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0,0%
Machinery: 21 tons, 8,6%
Hull, fittings & equipment: 102 tons, 40,9%
Fuel, ammunition & stores: 56 tons, 22,4%
Miscellaneous weights: 70 tons, 28,1%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
549 lbs / 249 Kg = 2.248,6 x 0,8 " / 20 mm shells or 0,7 torpedoes
Stability (Unstable if below 1.00): 1,02
Metacentric height 0,5 ft / 0,2 m
Roll period: 12,6 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0,00
Seaboat quality (Average = 1.00): 1,53

Hull form characteristics:
Hull has raised forecastle, low quarterdeck
Block coefficient: 0,400
Length to Beam Ratio: 5,49 : 1
'Natural speed' for length: 10,99 kts
Power going to wave formation at top speed: 61 %
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: 10,17 ft / 3,10 m
- Forecastle (20%): 9,19 ft / 2,80 m (8,53 ft / 2,60 m aft of break)
- Mid (50%): 8,53 ft / 2,60 m
- Quarterdeck (15%): 5,91 ft / 1,80 m (8,53 ft / 2,60 m before break)
- Stern: 5,91 ft / 1,80 m
- Average freeboard: 8,35 ft / 2,54 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 59,5%
- Above water (accommodation/working, high = better): 88,5%
Waterplane Area: 1.634 Square feet or 152 Square metres
Displacement factor (Displacement / loading): 221%
Structure weight / hull surface area: 34 lbs/sq ft or 167 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,04
- Longitudinal: 7,49
- Overall: 1,26
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of Misc. Weight 70tons:
-----------------------------------------------
20tons storage
20tons aviation fuel
30tons crane (12ton lifting capacity)

Heizhì-Class
Salvage lighter

Displacement:
190 t light; 194 t standard; 197 t normal; 199 t full load

Dimensions: Length overall / water x beam x draught
110,61 ft / 106,79 ft x 31,17 ft x 2,76 ft (normal load)
33,71 m / 32,55 m x 9,50 m x 0,84 m

Armament:
2 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread, all raised mounts
Weight of broadside 0 lbs / 0 kg
Shells per gun, main battery: 300

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 210 shp / 156 Kw = 10,00 kts
Range 450nm at 8,00 kts
Bunker at max displacement = 5 tons

Complement:
26 - 34

Cost:
£0,045 million / $0,180 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0,0%
Machinery: 6 tons, 2,9%
Hull, fittings & equipment: 114 tons, 58,2%
Fuel, ammunition & stores: 7 tons, 3,3%
Miscellaneous weights: 70 tons, 35,6%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
776 lbs / 352 Kg = 3.178,5 x 0,8 " / 20 mm shells or 0,9 torpedoes
Stability (Unstable if below 1.00): 1,47
Metacentric height 1,7 ft / 0,5 m
Roll period: 10,1 seconds
Steadiness - As gun platform (Average = 50 %): 45 %
- Recoil effect (Restricted arc if above 1.00): 0,00
Seaboat quality (Average = 1.00): 1,03

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,750
Length to Beam Ratio: 3,43 : 1
'Natural speed' for length: 10,33 kts
Power going to wave formation at top speed: 47 %
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: 10,50 ft / 3,20 m
- Forecastle (20%): 9,51 ft / 2,90 m
- Mid (50%): 4,92 ft / 1,50 m
- Quarterdeck (15%): 2,95 ft / 0,90 m
- Stern: 2,95 ft / 0,90 m
- Average freeboard: 5,97 ft / 1,82 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 49,4%
- Above water (accommodation/working, high = better): 111,3%
Waterplane Area: 2.788 Square feet or 259 Square metres
Displacement factor (Displacement / loading): 241%
Structure weight / hull surface area: 36 lbs/sq ft or 177 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,34
- Longitudinal: 3,30
- Overall: 1,47
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate

breakdown of 70tons Misc. Weight:
------------------------------------------------
50tons crane (lifting capacity: 20tons)
10tons pumps
10tons storage

...why do you need an aircraft salvage ship?

When the Spratleys are sink under the weight of Chinese aircraft!

From the Chinese encyclopedia....

Quoted

Aircraft salvage ship:
Air salvage ships are planned to support float planes in areas where no costal bases were available. Equipped with a huge crane,
those ships could take the float planes on board, refuel and re-arm them or do some maintenance duty.

The CNDO presented the Línchóng-Type as a first version.

Salvage Lighters:
Salvage lighters will be used for the salvage of downed seaplanes in coastal areas. Equipped with a huge crane and pump and repair
facilities, those ships could take the float plane on board and repair them or bring them back to the seaplanebase.

Personally I think seaplane tenders would perform this task better. Smaller ships could set up small bases but such bases would be of limited use.

Quoted

Originally posted by Vukovlad
When the Spratleys are sink under the weight of Chinese aircraft!

Likely a VERY accurate statement!

Línchóng - Class
first draft

Nice work Parador.

The first aircraft salvage ship sounds much more like a resupply vessel for operations in the middle of nowhere. The drawing shows a pretty nice little ship. Almost looks like a floatplane could taxy up onto the stern.

The salvage lighter seems much more like a salvage ship you'd expect. I'm not really sure how much work it would really do. Aircraft are relatively cheap and really don't like being immersed in salt water. I would think the effort required would be more than the benefit.

Great drawing Parador!