Torpilleur - Torpedo Boat

Jefgte · July 11, 2014, 05:56:05 PM

"La Jeune école" recommandations was observed for the building of the 54t - 35m TB, built from 1885 to 1890.
This class of 51 ships was built by different shipyards. Results were catastrophic, most of them, were surcharged & bad seaboat,
during "Grande Mannoeuvres" (naval exercices), they were unable to attack battleships due to poor performances & some of them capsized.
Different reports & studies were made to have better ships.
"Le Ministère de la Guerre" wrote recommandations for the next 1892 class:
Bigger ships (100t to 125t) - Good seaboat - 250nm range - 21kts

Jefgte · July 12, 2014, 04:58:51 PM

TB1 to TB24, France 38m-125tonnes laid down 1892 (Engine 1890)

Displacement:
   125 t light; 128 t standard; 132 t normal; 135 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (124.67 ft / 124.67 ft) x 15.09 ft x (6.14 / 6.23 ft)
   (38.00 m / 38.00 m) x 4.60 m x (1.87 / 1.90 m)

Armament:
2 - 1.46" / 37.0 mm 45.0 cal guns - 1.57lbs / 0.71kg shells, 300 per gun
     Quick firing guns in deck mounts, 1892 Model
     2 x Single mounts on centreline ends, evenly spread
      1 raised mount - superfiring
2 - 0.31" / 8.0 mm 76.0 cal guns - 0.02lbs / 0.01kg shells, 1 000 per gun
     Machine guns in deck mounts, 1892 Model
     2 x Single mounts on sides, forward deck forward
Weight of broadside 3 lbs / 1 kg
Main Torpedoes
1 - 15.0" / 381 mm, 14.44 ft / 4.40 m torpedo - 0.280 t total
2nd Torpedoes
2 - 15.0" / 381 mm, 14.44 ft / 4.40 m torpedoes - 0.280 t each, 0.561 t total
   In 2 sets of deck mounted centre rotating tubes

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.20" / 5 mm     -           -

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 2 100 ihp / 1 567 Kw = 21.07 kts
   Range 250nm at 10.00 kts
   Bunker at max displacement = 7 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   19 - 25

Cost:
   £0.016 million / $0.064 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 1.8 %
     - Guns: 1 tons, 0.7 %
     - Weapons: 1 tons, 1.1 %
   Armour: 1 tons, 0.8 %
     - Armament: 1 tons, 0.8 %
   Machinery: 82 tons, 61.9 %
   Hull, fittings & equipment: 38 tons, 28.9 %
   Fuel, ammunition & stores: 7 tons, 5.3 %
   Miscellaneous weights: 2 tons, 1.5 %
     - On freeboard deck: 2 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     29 lbs / 13 Kg = 18.6 x 1.5 " / 37 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 0.4 ft / 0.1 m
   Roll period: 10.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.06
   Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.400 / 0.403
   Length to Beam Ratio: 8.26 : 1
   'Natural speed' for length: 11.17 kts
   Power going to wave formation at top speed: 70 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   25.00 %, 8.20 ft / 2.50 m, 9.19 ft / 2.80 m
     - Forward deck:   25.00 %, 7.22 ft / 2.20 m, 6.89 ft / 2.10 m
     - Aft deck:   25.00 %, 6.89 ft / 2.10 m, 6.56 ft / 2.00 m
     - Quarter deck:   25.00 %, 6.56 ft / 2.00 m, 6.23 ft / 1.90 m
     - Average freeboard:      7.24 ft / 2.21 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 201.5 %
      - Above water (accommodation/working, high = better): 49.8 %
   Waterplane Area: 1 158 Square feet or 108 Square metres
   Displacement factor (Displacement / loading): 16 %
   Structure weight / hull surface area: 15 lbs/sq ft or 73 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 3.97
      - Overall: 0.61
   Caution: Hull subject to strain in open-sea
   Extremely poor machinery, storage, compartmentation space
   Extremely poor accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Trial speed: 27.5kts
Bonus: 6.43

Jefgte · July 12, 2014, 05:01:46 PM

TB25 to TB48, France TB2-235t laid down 1894 (Engine 1890)

Displacement:
   235 t light; 242 t standard; 261 t normal; 277 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (177.17 ft / 177.17 ft) x 19.69 ft x (6.56 / 6.81 ft)
   (54.00 m / 54.00 m) x 6.00 m x (2.00 / 2.08 m)

Armament:
2 - 1.85" / 47.0 mm 45.0 cal guns - 3.20lbs / 1.45kg shells, 250 per gun
     Quick firing guns in deck mounts, 1894 Model
     2 x Single mounts on centreline ends, evenly spread
      1 raised mount - superfiring
2 - 1.85" / 47.0 mm 45.0 cal guns - 3.20lbs / 1.45kg shells, 250 per gun
     Quick firing guns in deck mounts, 1894 Model
     2 x Single mounts on sides, forward deck forward
2 - 0.31" / 8.0 mm 76.0 cal guns - 0.02lbs / 0.01kg shells, 0 per gun
     Machine guns in deck mounts, 1894 Model
     2 x Single mounts on sides, forward deck centre
Weight of broadside 13 lbs / 6 kg
Main Torpedoes
1 - 17.7" / 450 mm, 17.72 ft / 5.40 m torpedo - 0.507 t total
2nd Torpedoes
2 - 17.7" / 450 mm, 17.72 ft / 5.40 m torpedoes - 0.507 t each, 1.013 t total
   In 2 sets of deck mounted centre rotating tubes

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.20" / 5 mm     -           -

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 3 780 ihp / 2 820 Kw = 23.00 kts
   Range 1 000nm at 10.00 kts
   Bunker at max displacement = 35 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   32 - 42

Cost:
   £0.031 million / $0.126 million

Distribution of weights at normal displacement:
   Armament: 6 tons, 2.1 %
     - Guns: 3 tons, 1.1 %
     - Weapons: 3 tons, 1.0 %
   Armour: 1 tons, 0.3 %
     - Armament: 1 tons, 0.3 %
   Machinery: 160 tons, 61.1 %
   Hull, fittings & equipment: 67 tons, 25.6 %
   Fuel, ammunition & stores: 26 tons, 10.1 %
   Miscellaneous weights: 2 tons, 0.8 %
     - On freeboard deck: 2 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     60 lbs / 27 Kg = 18.9 x 1.9 " / 47 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.37
   Metacentric height 0.8 ft / 0.2 m
   Roll period: 9.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.07
   Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.400 / 0.408
   Length to Beam Ratio: 9.00 : 1
   'Natural speed' for length: 13.31 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 9.02 ft / 2.75 m, 9.68 ft / 2.95 m
     - Forward deck:   25.00 %, 8.04 ft / 2.45 m, 7.71 ft / 2.35 m
     - Aft deck:   35.00 %, 7.71 ft / 2.35 m, 7.38 ft / 2.25 m
     - Quarter deck:   20.00 %, 7.38 ft / 2.25 m, 7.05 ft / 2.15 m
     - Average freeboard:      7.94 ft / 2.42 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 200.3 %
      - Above water (accommodation/working, high = better): 66.2 %
   Waterplane Area: 2 147 Square feet or 199 Square metres
   Displacement factor (Displacement / loading): 18 %
   Structure weight / hull surface area: 17 lbs/sq ft or 85 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.74
      - Overall: 0.56
   Caution: Hull subject to strain in open-sea
   Extremely poor machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Trial speed: 28.5kts
Bonus: 5.5

Jefgte · July 12, 2014, 05:04:42 PM

TB49 to TB72, France TB3-350t laid down 1897 (Engine 1890)

Displacement:
   350 t light; 360 t standard; 397 t normal; 426 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (206.69 ft / 206.69 ft) x 22.97 ft x (7.32 / 7.67 ft)
   (63.00 m / 63.00 m) x 7.00 m x (2.23 / 2.34 m)

Armament:
2 - 2.56" / 65.0 mm 45.0 cal guns - 8.44lbs / 3.83kg shells, 150 per gun
     Quick firing guns in deck mounts, 1897 Model
     2 x Single mounts on centreline ends, evenly spread
      1 raised mount - superfiring
2 - 1.85" / 47.0 mm 45.0 cal guns - 3.20lbs / 1.45kg shells, 220 per gun
     Quick firing guns in deck mounts, 1897 Model
     2 x Single mounts on sides, forward deck aft
2 - 0.31" / 8.0 mm 76.0 cal guns - 0.02lbs / 0.01kg shells, 2000 per gun
     Machine guns in deck mounts, 1897 Model
     2 x Single mounts on sides, forward deck centre
Weight of broadside 23 lbs / 11 kg
Main Torpedoes
2 - 17.7" / 450 mm, 17.72 ft / 5.40 m torpedoes - 0.561 t each, 1.121 t total
   submerged bow tubes
2nd Torpedoes
2 - 17.7" / 450 mm, 17.72 ft / 5.40 m torpedoes - 0.561 t each, 1.121 t total
   In 2 sets of deck mounted centre rotating tubes

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.20" / 5 mm     -           -
   2nd:   0.20" / 5 mm     -           -

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 5 500 ihp / 4 103 Kw = 24.09 kts
   Range 1 500nm at 10.00 kts
   Bunker at max displacement = 66 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   43 - 57

Cost:
   £0.047 million / $0.189 million

Distribution of weights at normal displacement:
   Armament: 9 tons, 2.4 %
     - Guns: 5 tons, 1.2 %
     - Weapons: 4 tons, 1.1 %
   Armour: 2 tons, 0.4 %
     - Armament: 2 tons, 0.4 %
   Machinery: 241 tons, 60.7 %
   Hull, fittings & equipment: 94 tons, 23.7 %
   Fuel, ammunition & stores: 47 tons, 11.8 %
   Miscellaneous weights: 4 tons, 1.0 %
     - On freeboard deck: 4 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     74 lbs / 34 Kg = 8.9 x 2.6 " / 65 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.50
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 9.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.07
   Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.400 / 0.410
   Length to Beam Ratio: 9.00 : 1
   'Natural speed' for length: 14.38 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 10.01 ft / 3.05 m, 10.66 ft / 3.25 m
     - Forward deck:   30.00 %, 8.69 ft / 2.65 m, 8.37 ft / 2.55 m
     - Aft deck:   30.00 %, 8.37 ft / 2.55 m, 8.04 ft / 2.45 m
     - Quarter deck:   20.00 %, 8.04 ft / 2.45 m, 7.71 ft / 2.35 m
     - Average freeboard:      8.67 ft / 2.64 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 222.6 %
      - Above water (accommodation/working, high = better): 78.0 %
   Waterplane Area: 2 922 Square feet or 271 Square metres
   Displacement factor (Displacement / loading): 18 %
   Structure weight / hull surface area: 19 lbs/sq ft or 93 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.38
      - Overall: 0.55
   Extremely poor machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Trial speed: 28kts
Bonus: 3.92

Jefgte · July 12, 2014, 05:08:50 PM

TB73 to TB96, France TB4-380t laid down 1899 (Engine 1900)

Displacement:
   380 t light; 391 t standard; 445 t normal; 488 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (216.54 ft / 216.54 ft) x 24.05 ft x (7.48 / 7.95 ft)
   (66.00 m / 66.00 m) x 7.33 m x (2.28 / 2.42 m)

Armament:
2 - 2.56" / 65.0 mm 45.0 cal guns - 8.44lbs / 3.83kg shells, 150 per gun
     Quick firing guns in deck mounts, 1899 Model
     2 x Single mounts on centreline ends, evenly spread
      1 raised mount - superfiring
2 - 2.56" / 65.0 mm 45.0 cal guns - 8.44lbs / 3.83kg shells, 150 per gun
     Quick firing guns in deck mounts, 1899 Model
     2 x Single mounts on sides, forward deck aft
2 - 0.31" / 8.0 mm 76.0 cal guns - 0.02lbs / 0.01kg shells, 2000 per gun
     Machine guns in deck mounts, 1899 Model
     2 x Single mounts on sides, forward deck centre
Weight of broadside 34 lbs / 15 kg
Main Torpedoes
2 - 17.7" / 450 mm, 17.72 ft / 5.40 m torpedoes - 0.601 t each, 1.202 t total
   submerged bow tubes
2nd Torpedoes
2 - 17.7" / 450 mm, 17.72 ft / 5.40 m torpedoes - 0.601 t each, 1.202 t total
   In 2 sets of deck mounted centre rotating tubes

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.20" / 5 mm     -           -
   2nd:   0.20" / 5 mm     -           -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 6 000 ihp / 4 476 Kw = 24.31 kts
   Range 2 500nm at 10.00 kts
   Bunker at max displacement = 97 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   47 - 62

Cost:
   £0.052 million / $0.207 million

Distribution of weights at normal displacement:
   Armament: 12 tons, 2.6 %
     - Guns: 7 tons, 1.5 %
     - Weapons: 5 tons, 1.1 %
   Armour: 2 tons, 0.4 %
     - Armament: 2 tons, 0.4 %
   Machinery: 262 tons, 58.8 %
   Hull, fittings & equipment: 100 tons, 22.4 %
   Fuel, ammunition & stores: 65 tons, 14.7 %
   Miscellaneous weights: 5 tons, 1.1 %
     - On freeboard deck: 5 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     90 lbs / 41 Kg = 10.7 x 2.6 " / 65 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.55
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 9.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.08
   Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.400 / 0.413
   Length to Beam Ratio: 9.00 : 1
   'Natural speed' for length: 14.72 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 10.66 ft / 3.25 m, 10.66 ft / 3.25 m
     - Forward deck:   30.00 %, 8.69 ft / 2.65 m, 8.37 ft / 2.55 m
     - Aft deck:   30.00 %, 8.37 ft / 2.55 m, 8.04 ft / 2.45 m
     - Quarter deck:   20.00 %, 8.04 ft / 2.45 m, 7.71 ft / 2.35 m
     - Average freeboard:      8.73 ft / 2.66 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 213.6 %
      - Above water (accommodation/working, high = better): 79.7 %
   Waterplane Area: 3 205 Square feet or 298 Square metres
   Displacement factor (Displacement / loading): 23 %
   Structure weight / hull surface area: 19 lbs/sq ft or 94 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.21
      - Overall: 0.54
   Extremely poor machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Trial speed: 28kts
Bonus: 3.65

Jefgte · September 03, 2015, 03:55:11 PM

TB97 to TB108, France TB5 class laid down 1902 (Engine 1900)

Displacement:
500 t light; 517 t standard; 588 t normal; 645 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(229.66 ft / 229.66 ft) x 25.52 ft x (8.78 / 9.33 ft)
(70.00 m / 70.00 m) x 7.78 m x (2.68 / 2.85 m)

Armament:
3 - 2.95" / 75.0 mm 45.0 cal guns - 12.99lbs / 5.89kg shells, 180 per gun
Quick firing guns in deck mounts, 1900 Model
3 x Single mounts on centreline, evenly spread
4 - 1.85" / 47.0 mm 45.0 cal guns - 3.19lbs / 1.45kg shells, 250 per gun
Quick firing guns in deck mounts, 1900 Model
4 x Single mounts on sides, forward deck aft
2 - 0.31" / 8.0 mm 76.0 cal guns - 0.02lbs / 0.01kg shells, 2 000 per gun
Machine guns in deck mounts, 1900 Model
2 x Single mounts on sides, forward deck centre
Weight of broadside 52 lbs / 23 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm - -

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 8 000 ihp / 5 968 Kw = 25.15 kts
Range 2 800nm at 10.00 kts
Bunker at max displacement = 128 tons (100% coal)
Caution: Delicate, lightweight machinery

Complement:
59 - 77

Cost:
£0.068 million / $0.274 million

Distribution of weights at normal displacement:
Armament: 10 tons, 1.8 %
- Guns: 10 tons, 1.8 %
Armour: 3 tons, 0.4 %
- Armament: 3 tons, 0.4 %
Machinery: 345 tons, 58.6 %
Hull, fittings & equipment: 126 tons, 21.5 %
Fuel, ammunition & stores: 89 tons, 15.1 %
Miscellaneous weights: 16 tons, 2.7 %
- On freeboard deck: 16 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
139 lbs / 63 Kg = 10.8 x 3.0 " / 75 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.52
Metacentric height 1.3 ft / 0.4 m
Roll period: 9.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.08
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has a flush deck,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.400 / 0.413
Length to Beam Ratio: 9.00 : 1
'Natural speed' for length: 15.15 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 12.47 ft / 3.80 m, 10.50 ft / 3.20 m
- Forward deck: 30.00 %, 10.50 ft / 3.20 m, 9.19 ft / 2.80 m
- Aft deck: 30.00 %, 9.19 ft / 2.80 m, 8.20 ft / 2.50 m
- Quarter deck: 20.00 %, 8.20 ft / 2.50 m, 7.87 ft / 2.40 m
- Average freeboard: 9.43 ft / 2.87 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 193.8 %
- Above water (accommodation/working, high = better): 108.0 %
Waterplane Area: 3 608 Square feet or 335 Square metres
Displacement factor (Displacement / loading): 23 %
Structure weight / hull surface area: 21 lbs/sq ft or 103 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.33
- Overall: 0.55
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

2.4 tons for 4 torpedoes + 2.4t for 4 reloads
10 mines
Trial speed: 28kts
Bonus: 2.85

Jefgte · February 14, 2016, 04:21:41 PM

TB109 to TB112, France TB5-2 laid down 1902 (Engine 1900)

Displacement:
500 t light; 518 t standard; 586 t normal; 641 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(229.66 ft / 229.66 ft) x 25.52 ft x (8.75 / 9.28 ft)
(70.00 m / 70.00 m) x 7.78 m x (2.67 / 2.83 m)

Armament:
3 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 120 per gun
Quick firing guns in deck mounts, 1902 Model
3 x Single mounts on centreline, evenly spread
2 - 0.31" / 8.0 mm 76.0 cal guns - 0.02lbs / 0.01kg shells, 2 000 per gun
Machine guns in deck mounts, 1902 Model
2 x Single mounts on sides, forward deck centre
Weight of broadside 92 lbs / 42 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm - -

Machinery:
Coal and oil fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 8 000 ihp / 5 968 Kw = 25.16 kts
Range 2 800nm at 10.00 kts
Bunker at max displacement = 123 tons (90% coal)
Caution: Delicate, lightweight machinery

Complement:
59 - 77

Cost:
£0.070 million / $0.279 million

Distribution of weights at normal displacement:
Armament: 17 tons, 2.8 %
- Guns: 17 tons, 2.8 %
Armour: 3 tons, 0.5 %
- Armament: 3 tons, 0.5 %
Machinery: 341 tons, 58.2 %
Hull, fittings & equipment: 126 tons, 21.4 %
Fuel, ammunition & stores: 86 tons, 14.7 %
Miscellaneous weights: 14 tons, 2.4 %
- On freeboard deck: 14 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
136 lbs / 62 Kg = 4.5 x 3.9 " / 100 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.50
Metacentric height 1.3 ft / 0.4 m
Roll period: 9.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.15
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has a flush deck,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.400 / 0.412
Length to Beam Ratio: 9.00 : 1
'Natural speed' for length: 15.15 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 12.47 ft / 3.80 m, 10.66 ft / 3.25 m
- Forward deck: 30.00 %, 10.66 ft / 3.25 m, 9.19 ft / 2.80 m
- Aft deck: 30.00 %, 9.19 ft / 2.80 m, 8.20 ft / 2.50 m
- Quarter deck: 20.00 %, 8.20 ft / 2.50 m, 7.87 ft / 2.40 m
- Average freeboard: 9.47 ft / 2.89 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 195.2 %
- Above water (accommodation/working, high = better): 108.4 %
Waterplane Area: 3 608 Square feet or 335 Square metres
Displacement factor (Displacement / loading): 23 %
Structure weight / hull surface area: 22 lbs/sq ft or 105 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.36
- Overall: 0.55
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

2.4 tons for 4 torpedoes + 2.4t for 4 reloads
8 mines
Trial speed: 28kts
Bonus: 2.85

Torpilleur - Torpedo Boat

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