WesWorld

After the first design studdies, now the CNDO shows it's new design for the DAGU-CLASS.


Dagu-Class
Chinese Patrolcraft
laid down 1932

Displacement:
261 t light; 270 t standard; 300 t normal; 324 t full load

Dimensions: Length overall / water x beam x draught
164,70 ft / 164,70 ft x 22,97 ft x 10,83 ft (normal load)
50,20 m / 50,20 m x 7,00 m x 3,30 m

Armament:
2 - 3,00" / 76,2 mm guns in single mounts, 13,50lbs / 6,12kg shells, 1932 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
1 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1932 Model
Anti-aircraft gun in deck mount
on side amidships
3 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1932 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 30 lbs / 13 kg
Shells per gun, main battery: 150

Machinery:
Diesel Internal combustion motors,
Geared drive, 3 shafts, 2.296 shp / 1.713 Kw = 20,00 kts
Range 3.000nm at 12,00 kts
Bunker at max displacement = 54 tons

Complement:
35 - 46

Cost:
£0,099 million / $0,395 million

Distribution of weights at normal displacement:
Armament: 4 tons, 1,2%
Machinery: 68 tons, 22,6%
Hull, fittings & equipment: 160 tons, 53,3%
Fuel, ammunition & stores: 39 tons, 12,9%
Miscellaneous weights: 30 tons, 10,0%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
646 lbs / 293 Kg = 47,9 x 3,0 " / 76 mm shells or 0,5 torpedoes
Stability (Unstable if below 1.00): 1,03
Metacentric height 0,6 ft / 0,2 m
Roll period: 12,6 seconds
Steadiness - As gun platform (Average = 50 %): 97 %
- Recoil effect (Restricted arc if above 1.00): 0,15
Seaboat quality (Average = 1.00): 1,93

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,256
Length to Beam Ratio: 7,17 : 1
'Natural speed' for length: 12,83 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 14,11 ft / 4,30 m
- Forecastle (20%): 8,99 ft / 2,74 m
- Mid (50%): 8,99 ft / 2,74 m
- Quarterdeck (15%): 8,99 ft / 2,74 m
- Stern: 8,99 ft / 2,74 m
- Average freeboard: 9,40 ft / 2,86 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 94,2%
- Above water (accommodation/working, high = better): 171,1%
Waterplane Area: 3.497 Square feet or 325 Square metres
Displacement factor (Displacement / loading): 154%
Structure weight / hull surface area: 32 lbs/sq ft or 155 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,79
- Longitudinal: 8,35
- Overall: 1,00
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
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Misc. Weights: 30 tons for ASW equipment (2xDCT; 4xDCP)

Dagu, China Patrolcraft laid down 1932

Displacement:
273 t light; 282 t standard; 312 t normal; 336 t full load

Dimensions: Length overall / water x beam x draught
167,00 ft / 164,70 ft x 22,97 ft x 7,22 ft (normal load)
50,90 m / 50,20 m x 7,00 m x 2,20 m

Armament:
2 - 3,00" / 76,2 mm guns in single mounts, 13,50lbs / 6,12kg shells, 1932 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
1 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1932 Model
Anti-aircraft gun in deck mount
on side amidships
3 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1932 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 30 lbs / 13 kg
Shells per gun, main battery: 150

Armour:
- Conning tower: 15,00" / 381 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 3 shafts, 2.527 shp / 1.885 Kw = 20,00 kts
Range 3.000nm at 12,00 kts
Bunker at max displacement = 54 tons

Complement:
36 - 48

Cost:
£0,105 million / $0,420 million

Distribution of weights at normal displacement:
Armament: 4 tons, 1,2%
Armour: 15 tons, 4,8%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 0 tons, 0,0%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 15 tons, 4,8%
Machinery: 75 tons, 23,9%
Hull, fittings & equipment: 150 tons, 48,0%
Fuel, ammunition & stores: 39 tons, 12,5%
Miscellaneous weights: 30 tons, 9,6%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
475 lbs / 215 Kg = 35,2 x 3,0 " / 76 mm shells or 0,4 torpedoes
Stability (Unstable if below 1.00): 1,01
Metacentric height 0,6 ft / 0,2 m
Roll period: 12,9 seconds
Steadiness - As gun platform (Average = 50 %): 69 %
- Recoil effect (Restricted arc if above 1.00): 0,12
Seaboat quality (Average = 1.00): 1,25

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,400
Length to Beam Ratio: 7,17 : 1
'Natural speed' for length: 12,83 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 55
Bow angle (Positive = bow angles forward): 12,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 10,83 ft / 3,30 m
- Forecastle (20%): 9,84 ft / 3,00 m
- Mid (50%): 8,99 ft / 2,74 m
- Quarterdeck (15%): 8,99 ft / 2,74 m
- Stern: 8,99 ft / 2,74 m
- Average freeboard: 9,37 ft / 2,86 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 97,6%
- Above water (accommodation/working, high = better): 113,2%
Waterplane Area: 2.328 Square feet or 216 Square metres
Displacement factor (Displacement / loading): 139%
Structure weight / hull surface area: 35 lbs/sq ft or 170 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,94
- Longitudinal: 5,25
- Overall: 1,11
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily

Misc. Weights: 30 tons for ASW equipment (2xDCT; 4xDCP)

Of course this is a mistake, because i haven't change the unit from inch to mm :-( *sorry my fault*

Now with the correct unit ;-) ....

Dagu, China Patrolcraft laid down 1932

Displacement:
273 t light; 282 t standard; 312 t normal; 336 t full load

Dimensions: Length overall / water x beam x draught
167,00 ft / 164,70 ft x 22,97 ft x 7,22 ft (normal load)
50,90 m / 50,20 m x 7,00 m x 2,20 m

Armament:
2 - 3,00" / 76,2 mm guns in single mounts, 13,50lbs / 6,12kg shells, 1932 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
1 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1932 Model
Anti-aircraft gun in deck mount
on side amidships
3 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1932 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 30 lbs / 13 kg
Shells per gun, main battery: 150

Armour:
- Conning tower: 0,59" / 15 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 3 shafts, 2.527 shp / 1.885 Kw = 20,00 kts
Range 3.000nm at 12,00 kts
Bunker at max displacement = 54 tons

Complement:
36 - 48

Cost:
£0,105 million / $0,420 million

Distribution of weights at normal displacement:
Armament: 4 tons, 1,2%
Armour: 1 tons, 0,2%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 0 tons, 0,0%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 1 tons, 0,2%
Machinery: 75 tons, 23,9%
Hull, fittings & equipment: 164 tons, 52,6%
Fuel, ammunition & stores: 39 tons, 12,5%
Miscellaneous weights: 30 tons, 9,6%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
487 lbs / 221 Kg = 36,1 x 3,0 " / 76 mm shells or 0,4 torpedoes
Stability (Unstable if below 1.00): 1,06
Metacentric height 0,6 ft / 0,2 m
Roll period: 12,3 seconds
Steadiness - As gun platform (Average = 50 %): 69 %
- Recoil effect (Restricted arc if above 1.00): 0,11
Seaboat quality (Average = 1.00): 1,25

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,400
Length to Beam Ratio: 7,17 : 1
'Natural speed' for length: 12,83 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 55
Bow angle (Positive = bow angles forward): 12,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 10,83 ft / 3,30 m
- Forecastle (20%): 9,84 ft / 3,00 m
- Mid (50%): 8,99 ft / 2,74 m
- Quarterdeck (15%): 8,99 ft / 2,74 m
- Stern: 8,99 ft / 2,74 m
- Average freeboard: 9,37 ft / 2,86 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 97,6%
- Above water (accommodation/working, high = better): 113,2%
Waterplane Area: 2.328 Square feet or 216 Square metres
Displacement factor (Displacement / loading): 149%
Structure weight / hull surface area: 38 lbs/sq ft or 186 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,04
- Longitudinal: 5,75
- Overall: 1,24
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily

Misc. Weights: 30 tons for ASW equipment (2xDCT; 4xDCP)



She is for the ocean use, but if necessary she could also be used in the wide rivers.