Torpedo Boats

[Logi]

QH Yangzi, Middle Kingdom torpedo boat laid down 1890

Displacement:
   180 t light; 185 t standard; 197 t normal; 206 t full load

Dimensions: Length overall / water x beam x draught
   170,60 ft / 170,60 ft x 17,72 ft x 6,89 ft (normal load)
   52,00 m / 52,00 m x 5,40 m  x 2,10 m

Armament:
      1 - 2,95" / 75,0 mm guns in single mounts, 12,87lbs / 5,84kg shells, 1892 Model
     Quick firing gun in deck mount
     on centreline forward
      1 - 0,98" / 25,0 mm guns in single mounts, 0,48lbs / 0,22kg shells, 1892 Model
     Machine gun in deck mount
     on centreline amidships
   Weight of broadside 13 lbs / 6 kg
   Shells per gun, main battery: 150
   4 - 14,0" / 355,6 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,79" / 20 mm         -               -
   2nd:   0,79" / 20 mm         -               -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 1.826 ihp / 1.362 Kw = 20,29 kts
   Range 1.200nm at 8,00 kts
   Bunker at max displacement = 21 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   26 - 34

Cost:
   £0,023 million / $0,093 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 0,8%
   Armour: 1 tons, 0,7%
      - Belts: 0 tons, 0,0%
      - Torpedo bulkhead: 0 tons, 0,0%
      - Armament: 1 tons, 0,7%
      - Armour Deck: 0 tons, 0,0%
      - Conning Tower: 0 tons, 0,0%
   Machinery: 111 tons, 56,6%
   Hull, fittings & equipment: 65 tons, 33,2%
   Fuel, ammunition & stores: 17 tons, 8,6%
   Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     56 lbs / 25 Kg = 4,3 x 3,0 " / 75 mm shells or 0,1 torpedoes
   Stability (Unstable if below 1.00): 1,29
   Metacentric height 0,6 ft / 0,2 m
   Roll period: 9,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0,14
   Seaboat quality  (Average = 1.00): 2,00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,331
   Length to Beam Ratio: 9,63 : 1
   'Natural speed' for length: 13,06 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:      13,12 ft / 4,00 m
      - Forecastle (20%):   14,76 ft / 4,50 m
      - Mid (50%):      7,87 ft / 2,40 m
      - Quarterdeck (15%):   7,87 ft / 2,40 m
      - Stern:      7,87 ft / 2,40 m
      - Average freeboard:   10,15 ft / 3,10 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 189,2%
      - Above water (accommodation/working, high = better): 76,2%
   Waterplane Area: 1.849 Square feet or 172 Square metres
   Displacement factor (Displacement / loading): 30%
   Structure weight / hull surface area: 14 lbs/sq ft or 66 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,39
      - Longitudinal: 5,18
      - Overall: 0,50
   Caution: Hull subject to strain in open-sea
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Name means "Positive Force" or "Sunshine". According to popular belief yang is the positive force associated with strength and light, as opposed to Yin which is negative, dark and weak. 100 ships of this type were built. Last one is put to the water in 1897. A modernized version is now being built.

Ships:
Yangzi (17) 1890 ~ 1897

[Logi]

QH Yangzi, modernized Middle Kingdom torpedo boat laid down 1899

Displacement:
   323 t light; 335 t standard; 348 t normal; 358 t full load

Dimensions: Length overall / water x beam x draught
   180,45 ft / 180,45 ft x 20,34 ft x 6,56 ft (normal load)
   55,00 m / 55,00 m x 6,20 m  x 2,00 m

Armament:
      4 - 2,95" / 75,0 mm guns in single mounts, 12,87lbs / 5,84kg shells, 1899 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      4 - 0,98" / 25,0 mm guns in single mounts, 0,48lbs / 0,22kg shells, 1899 Model
     Machine guns in deck mounts
     on centreline, all amidships
   Weight of broadside 53 lbs / 24 kg
   Shells per gun, main battery: 150
   5 - 14,0" / 355,6 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1,57" / 40 mm         -               -
   2nd:   0,79" / 20 mm         -               -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 1 shaft, 6.999 ihp / 5.221 Kw = 25,06 kts
   Range 1.000nm at 8,00 kts
   Bunker at max displacement = 23 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   39 - 52

Cost:
   £0,047 million / $0,186 million

Distribution of weights at normal displacement:
   Armament: 7 tons, 1,9%
   Armour: 10 tons, 2,9%
      - Belts: 0 tons, 0,0%
      - Torpedo bulkhead: 0 tons, 0,0%
      - Armament: 10 tons, 2,9%
      - Armour Deck: 0 tons, 0,0%
      - Conning Tower: 0 tons, 0,0%
   Machinery: 212 tons, 60,9%
   Hull, fittings & equipment: 95 tons, 27,3%
   Fuel, ammunition & stores: 24 tons, 7,0%
   Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     73 lbs / 33 Kg = 5,7 x 3,0 " / 75 mm shells or 0,1 torpedoes
   Stability (Unstable if below 1.00): 1,43
   Metacentric height 0,9 ft / 0,3 m
   Roll period: 9,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 59 %
         - Recoil effect (Restricted arc if above 1.00): 0,22
   Seaboat quality  (Average = 1.00): 1,18

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,505
   Length to Beam Ratio: 8,87 : 1
   'Natural speed' for length: 13,43 kts
   Power going to wave formation at top speed: 73 %
   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:      14,76 ft / 4,50 m
      - Forecastle (20%):   14,76 ft / 4,50 m
      - Mid (50%):      9,42 ft / 2,87 m
      - Quarterdeck (15%):   9,42 ft / 2,87 m
      - Stern:      9,42 ft / 2,87 m
      - Average freeboard:   11,29 ft / 3,44 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 211,1%
      - Above water (accommodation/working, high = better): 71,7%
   Waterplane Area: 2.364 Square feet or 220 Square metres
   Displacement factor (Displacement / loading): 15%
   Structure weight / hull surface area: 16 lbs/sq ft or 80 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,40
      - Longitudinal: 4,54
      - Overall: 0,51
   Hull space for machinery, storage, compartmentation is extremely poor
   Room for accommodation and workspaces is cramped

Name means "Positive Force" or "Sunshine". According to popular belief yang is the positive force associated with strength and light, as opposed to Yin which is negative, dark and weak. 100 ships. Last one is put to the water on New Year's Day of 1900.

Ships:
Haiyang (Force of the Sea) 1898
Zhengyang (Righteous Force) 1899
Fuyang (Wealthy Force) 1899
Jianyang (Establishing Force) 1900

[Logi]

"Dewu"-class (ex-ACM) torpedo boats

T1

ACM Torpedo Boat laid down 1890

Displacement:
235 t light; 240 t standard; 250 t normal; 257 t full load

Dimensions: Length overall / water x beam x draught
200.00 ft / 200.00 ft x 22.00 ft x 4.00 ft (normal load)
60.96 m / 60.96 m x 6.71 m x 1.22 m

Armament:
6 - 0.30" / 7.6 mm guns in single mounts, 0.01lbs / 0.01kg shells, 1890 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 0 lbs / 0 kg
Shells per gun, main battery: 750
1 - 16.0" / 406.4 mm above water torpedoes

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 1 shaft, 2,000 ihp / 1,492 Kw = 19.76 kts
Range 1,000nm at 7.00 kts (Bunkerage = 18 tons)
Caution: Delicate, lightweight machinery

Complement:
30 - 40

Cost:
£0.027 million / $0.110 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 137 tons, 55.0 %
Hull, fittings & equipment: 68 tons, 27.1 %
Fuel, ammunition & stores: 15 tons, 5.9 %
Miscellaneous weights: 30 tons, 12.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
77 lbs / 35 Kg = 5,669.6 x 0.3 " / 8 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.56
Metacentric height 1.1 ft / 0.3 m
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.497
Length to Beam Ratio: 9.09 : 1
'Natural speed' for length: 14.14 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: 11.00 ft / 3.35 m
- Forecastle (20 %): 8.00 ft / 2.44 m
- Mid (50 %): 7.00 ft / 2.13 m
- Quarterdeck (15 %): 7.00 ft / 2.13 m
- Stern: 7.00 ft / 2.13 m
- Average freeboard: 7.59 ft / 2.31 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 190.5 %
- Above water (accommodation/working, high = better): 122.0 %
Waterplane Area: 2,924 Square feet or 272 Square metres
Displacement factor (Displacement / loading): 32 %
Structure weight / hull surface area: 16 lbs/sq ft or 77 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 0.73
- Overall: 0.52
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent

Ships:
Dewu (Virtuous martiality) (4)

[Logi]

QH Haishi, "Sea Lion" middle kingdom torpedo boat laid down 1901

Displacement:
   244 t light; 250 t standard; 258 t normal; 265 t full load

Dimensions: Length overall / water x beam x draught
   196,85 ft / 196,85 ft x 20,34 ft x 6,56 ft (normal load)
   60,00 m / 60,00 m x 6,20 m  x 2,00 m

Armament:
      1 - 2,95" / 75,0 mm guns in single mounts, 12,87lbs / 5,84kg shells, 1902 Model
     Breech loading gun in deck mount
     on centreline forwards
      2 - 0,98" / 25,0 mm guns in single mounts, 0,48lbs / 0,22kg shells, 1902 Model
     Machine guns in deck mounts
     on centreline, all amidships
   Weight of broadside 14 lbs / 6 kg
   Shells per gun, main battery: 80
   4 - 20,0" / 508 mm above water torpedoes

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 1 shaft, 4.034 ihp / 3.009 Kw = 24,00 kts
   Range 1.000nm at 7,00 kts
   Bunker at max displacement = 15 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   31 - 41

Cost:
   £0,032 million / $0,126 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 0,7%
   Machinery: 154 tons, 59,7%
   Hull, fittings & equipment: 89 tons, 34,3%
   Fuel, ammunition & stores: 14 tons, 5,4%
   Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     70 lbs / 32 Kg = 5,5 x 3,0 " / 75 mm shells or 0,1 torpedoes
   Stability (Unstable if below 1.00): 1,24
   Metacentric height 0,7 ft / 0,2 m
   Roll period: 10,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0,11
   Seaboat quality  (Average = 1.00): 2,00

Hull form characteristics:
   Hull has raised quarterdeck
   Block coefficient: 0,344
   Length to Beam Ratio: 9,68 : 1
   'Natural speed' for length: 14,03 kts
   Power going to wave formation at top speed: 61 %
   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:      14,76 ft / 4,50 m
      - Forecastle (20%):   14,76 ft / 4,50 m
      - Mid (50%):      10,17 ft / 3,10 m
      - Quarterdeck (15%):   10,17 ft / 3,10 m (9,42 ft / 2,87 m before break)
      - Stern:      10,17 ft / 3,10 m
      - Average freeboard:   11,65 ft / 3,55 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 197,4%
      - Above water (accommodation/working, high = better): 58,4%
   Waterplane Area: 2.295 Square feet or 213 Square metres
   Displacement factor (Displacement / loading): 21%
   Structure weight / hull surface area: 14 lbs/sq ft or 70 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,39
      - Longitudinal: 5,31
      - Overall: 0,50
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Ships:
Haihu (Sea Tiger) 1901
Hailong (Sea Dragon) 1901
Haitun (Dolphin) 1901
Haixiang (Walrus) 1902
Haihu (Sea Swan) 1902
Haifeng (Sea Phoenix) 1902
Haique (Sea Sparrosw) 1902
Haisha (Shark) 1902
Haigui (Sea Turtle) 1902

[Logi]

QH Kuaizi, Middle kingdom torpedoboat laid down 1904 (Engine 1909)

Displacement:
   390 t light; 399 t standard; 434 t normal; 461 t full load

Dimensions: Length overall / water x beam x draught
   231,47 ft / 229,66 ft x 21,00 ft x 7,55 ft (normal load)
   70,55 m / 70,00 m x 6,40 m  x 2,30 m

Armament:
      1 - 2,95" / 75,0 mm guns in single mounts, 12,87lbs / 5,84kg shells, 1904 Model
     Breech loading gun in deck mounts
     on centreline ends, evenly spread
      4 - 0,98" / 25,0 mm guns in single mounts, 0,48lbs / 0,22kg shells, 1904 Model
     Machine guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
   Weight of broadside 15 lbs / 7 kg
   Shells per gun, main battery: 80
   4 - 20,0" / 508 mm above water torpedoes

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 1 shaft, 13.726 shp / 10.240 Kw = 30,00 kts
   Range 2.200nm at 9,00 kts
   Bunker at max displacement = 62 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   46 - 61

Cost:
   £0,050 million / $0,199 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 0,4%
   Machinery: 247 tons, 56,9%
   Hull, fittings & equipment: 141 tons, 32,6%
   Fuel, ammunition & stores: 44 tons, 10,1%
   Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     110 lbs / 50 Kg = 8,5 x 3,0 " / 75 mm shells or 0,1 torpedoes
   Stability (Unstable if below 1.00): 1,19
   Metacentric height 0,7 ft / 0,2 m
   Roll period: 10,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 76 %
         - Recoil effect (Restricted arc if above 1.00): 0,08
   Seaboat quality  (Average = 1.00): 1,27

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,417
   Length to Beam Ratio: 10,94 : 1
   'Natural speed' for length: 15,15 kts
   Power going to wave formation at top speed: 70 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 6,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      17,26 ft / 5,26 m
      - Forecastle (20%):   13,78 ft / 4,20 m
      - Mid (50%):      10,99 ft / 3,35 m
      - Quarterdeck (15%):   10,99 ft / 3,35 m
      - Stern:      10,99 ft / 3,35 m
      - Average freeboard:   12,25 ft / 3,73 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 186,7%
      - Above water (accommodation/working, high = better): 66,0%
   Waterplane Area: 2.843 Square feet or 264 Square metres
   Displacement factor (Displacement / loading): 31%
   Structure weight / hull surface area: 18 lbs/sq ft or 88 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,40
      - Longitudinal: 4,40
      - Overall: 0,51
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Ships:
Kuaizi ("Fast Class") laid down Q4 1904
Kuaikai ("Fast Anger") laid down Q4 1904
Kuaiquan ("Fast Fist") laid down Q4 1904
+ Kuaizi ("Fast Class")  (20)

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19TB1, RRC Destroyer laid down 1919 (Engine 1916)

Displacement:
  200 t light; 206 t standard; 239 t normal; 265 t full load

Dimensions: Length overall / water x beam x draught
  230.00 ft / 222.00 ft x 20.19 ft x 4.50 ft (normal load)
  70.10 m / 67.67 m x 6.15 m  x 1.37 m

Armament:
     2 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1919 Model
    Quick firing guns in deck mounts
    on centreline ends, evenly spread
     2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1919 Model
    Machine guns in deck mounts
    on centreline, all amidships
  Weight of broadside 26 lbs / 12 kg
  Shells per gun, main battery: 100
  9 - 21.0" / 533.4 mm above water torpedoes

Armour:
  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
  Main:   1.00" / 25 mm         -               -
  2nd:   1.00" / 25 mm         -               -

Machinery:
  Oil fired boilers, steam turbines,
  Direct drive, 2 shafts, 6,117 shp / 4,563 Kw = 27.00 kts
  Range 3,000nm at 12.00 kts
  Bunker at max displacement = 59 tons

  Trial Speed = 32.00 kts

Complement:
  29 - 39

Cost:
  £0.058 million / $0.232 million

Distribution of weights at normal displacement:
  Armament: 3 tons, 1.4 %
  Armour: 3 tons, 1.3 %
     - Belts: 0 tons, 0.0 %
     - Torpedo bulkhead: 0 tons, 0.0 %
     - Armament: 3 tons, 1.3 %
     - Armour Deck: 0 tons, 0.0 %
     - Conning Tower: 0 tons, 0.0 %
  Machinery: 120 tons, 50.3 %
  Hull, fittings & equipment: 65 tons, 27.0 %
  Fuel, ammunition & stores: 39 tons, 16.2 %
  Miscellaneous weights: 9 tons, 3.8 %

Overall survivability and seakeeping ability:
  Survivability (Non-critical penetrating hits needed to sink ship):
    60 lbs / 27 Kg = 4.6 x 3.0 " / 75 mm shells or 0.1 torpedoes
  Stability (Unstable if below 1.00): 1.09
  Metacentric height 0.5 ft / 0.2 m
  Roll period: 11.6 seconds
  Steadiness   - As gun platform (Average = 50 %): 29 %
        - Recoil effect (Restricted arc if above 1.00): 0.08
  Seaboat quality  (Average = 1.00): 0.28

Hull form characteristics:
  Hull has a flush deck
  Block coefficient: 0.415
  Length to Beam Ratio: 11.00 : 1
  'Natural speed' for length: 14.90 kts
  Power going to wave formation at top speed: 65 %
  Trim (Max stability = 0, Max steadiness = 100): 58
  Bow angle (Positive = bow angles forward): 30.00 degrees
  Stern overhang: 1.07 ft / 0.33 m
  Freeboard (% = measuring location as a percentage of overall length):
     - Stem:      12.00 ft / 3.66 m
     - Forecastle (15 %):   8.00 ft / 2.44 m
     - Mid (50 %):      6.00 ft / 1.83 m
     - Quarterdeck (10 %):   4.00 ft / 1.22 m
     - Stern:      4.00 ft / 1.22 m
     - Average freeboard:   6.29 ft / 1.92 m
  Ship tends to be wet forward

Ship space, strength and comments:
  Space   - Hull below water (magazines/engines, low = better): 176.7 %
     - Above water (accommodation/working, high = better): -41.6 %
  Waterplane Area: 2,784 Square feet or 259 Square metres
  Displacement factor (Displacement / loading): 48 %
  Structure weight / hull surface area: 16 lbs/sq ft or 77 Kg/sq metre
  Hull strength (Relative):
     - Cross-sectional: 0.50
     - Longitudinal: 0.54
     - Overall: 0.50
  Hull space for machinery, storage, compartmentation is cramped
  Room for accommodation and workspaces is extremely poor
  Ship has quick, lively roll, not a steady gun platform
  Caution: Lacks seaworthiness - very limited seakeeping ability

9t ( 9 21" Torpedoes)

Ships:
19TB (12) - 1918
19TB (38) - 1919
19TB (15) - 1919 - Orange