ESC Torpedoboat

[ledeper]

T1-T?, ESC Torpedoboat laid down 1915 (Engine 1913)

Displacement:
   349 t light; 360 t standard; 388 t normal; 410 t full load

Dimensions: Length overall / water x beam x draught
   231,51 ft / 229,66 ft x 18,86 ft x 5,41 ft (normal load)
   70,56 m / 70,00 m x 5,75 m  x 1,65 m

Armament:
      1 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1915 Model
     Quick firing gun in deck mount
     on centreline forward
      1 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,89kg shells, 1915 Model
     Quick firing gun in deck mounts
     on centreline, all aft
   Weight of broadside 32 lbs / 15 kg
   Shells per gun, main battery: 150
   4 - 18,0" / 457,2 mm above water torpedoes

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 10.751 shp / 8.020 Kw = 28,25 kts
   Range 2.500nm at 10,00 kts
   Bunker at max displacement = 50 tons

Complement:
   43 - 56

Cost:
   £0,064 million / $0,258 million

Distribution of weights at normal displacement:
   Armament: 4 tons, 1,0 %
   Machinery: 205 tons, 52,8 %
   Hull, fittings & equipment: 135 tons, 34,7 %
   Fuel, ammunition & stores: 39 tons, 9,9 %
   Miscellaneous weights: 6 tons, 1,5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     137 lbs / 62 Kg = 4,5 x 3,9 " / 100 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,27
   Metacentric height 0,6 ft / 0,2 m
   Roll period: 10,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0,17
   Seaboat quality  (Average = 1.00): 1,00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,579
   Length to Beam Ratio: 12,17 : 1
   'Natural speed' for length: 15,15 kts
   Power going to wave formation at top speed: 70 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 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 %):   10,50 ft / 3,20 m
      - Mid (50 %):      10,50 ft / 3,20 m
      - Quarterdeck (15 %):   10,50 ft / 3,20 m
      - Stern:      10,50 ft / 3,20 m
      - Average freeboard:   10,50 ft / 3,20 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 180,1 %
      - Above water (accommodation/working, high = better): 77,0 %
   Waterplane Area: 3.107 Square feet or 289 Square metres
   Displacement factor (Displacement / loading): 44 %
   Structure weight / hull surface area: 19 lbs/sq ft or 93 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 2,90
      - Overall: 0,60
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped

And a colonial-type , coal-fired and half a knot slower:

CT1-T?, ESC Torpedoboat laid down 1915 (Engine 1913)

Displacement:
   363 t light; 374 t standard; 414 t normal; 446 t full load

Dimensions: Length overall / water x beam x draught
   231,51 ft / 229,66 ft x 18,86 ft x 5,41 ft (normal load)
   70,56 m / 70,00 m x 5,75 m  x 1,65 m

Armament:
      1 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1915 Model
     Quick firing gun in deck mount
     on centreline forward
      1 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,89kg shells, 1915 Model
     Quick firing gun in deck mounts
     on centreline, all aft
   Weight of broadside 32 lbs / 15 kg
   Shells per gun, main battery: 150
   4 - 18,0" / 457,2 mm above water torpedoes

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 10.605 shp / 7.912 Kw = 27,75 kts
   Range 2.500nm at 10,00 kts
   Bunker at max displacement = 72 tons (100% coal)

Complement:
   45 - 59

Cost:
   £0,068 million / $0,273 million

Distribution of weights at normal displacement:
   Armament: 4 tons, 1,0 %
   Machinery: 220 tons, 53,0 %
   Hull, fittings & equipment: 133 tons, 32,2 %
   Fuel, ammunition & stores: 51 tons, 12,4 %
   Miscellaneous weights: 6 tons, 1,4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     143 lbs / 65 Kg = 4,7 x 3,9 " / 100 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,31
   Metacentric height 0,7 ft / 0,2 m
   Roll period: 9,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0,16
   Seaboat quality  (Average = 1.00): 1,01

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,618
   Length to Beam Ratio: 12,17 : 1
   'Natural speed' for length: 15,15 kts
   Power going to wave formation at top speed: 70 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 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 %):   10,50 ft / 3,20 m
      - Mid (50 %):      10,50 ft / 3,20 m
      - Quarterdeck (15 %):   10,50 ft / 3,20 m
      - Stern:      10,50 ft / 3,20 m
      - Average freeboard:   10,50 ft / 3,20 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 180,3 %
      - Above water (accommodation/working, high = better): 76,3 %
   Waterplane Area: 3.222 Square feet or 299 Square metres
   Displacement factor (Displacement / loading): 43 %
   Structure weight / hull surface area: 19 lbs/sq ft or 91 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 2,69
      - Overall: 0,59
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped

[P3D]

You could get oil to your colonies easier than coal - Gran Colombia and Persia are closer than Hamburg.

[The Rock Doctor]

This is true.

The high block co-efficient of these ships is puzzling; I'd recommend reducing it to 0.40 - 0.45 and increasing beam and draft to keep the displacement the same.

[maddox]

The length is just so it can't be layed down in a type 0 dock. 

Maybe this one?
Same cost, 0.75 kts faster, same range and and armament and fitting in a type 0 dock.

Example TB, N/A Torpedo boat laid down 1914 (Engine 1912)

Displacement:
   350 t light; 360 t standard; 388 t normal; 411 t full load

Dimensions: Length overall / water x beam x draught
   229,62 ft / 226,71 ft x 24,93 ft x 6,07 ft (normal load)
   69,99 m / 69,10 m x 7,60 m  x 1,85 m

Armament:
      1 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1914 Model
     Quick firing gun in deck mount
     on centreline forward
      1 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,89kg shells, 1914 Model
     Quick firing gun in deck mount
     on centreline aft
   Weight of broadside 32 lbs / 15 kg
   Shells per gun, main battery: 100
   4 - 18,0" / 457,2 mm above water torpedoes

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 11.365 shp / 8.478 Kw = 29,00 kts
   Range 2.500nm at 10,00 kts
   Bunker at max displacement = 51 tons

Complement:
   43 - 56

Cost:
   £0,057 million / $0,227 million

Distribution of weights at normal displacement:
   Armament: 4 tons, 1,0%
   Machinery: 207 tons, 53,4%
   Hull, fittings & equipment: 133 tons, 34,2%
   Fuel, ammunition & stores: 38 tons, 9,8%
   Miscellaneous weights: 6 tons, 1,5%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     128 lbs / 58 Kg = 4,2 x 3,9 " / 100 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,26
   Metacentric height 0,9 ft / 0,3 m
   Roll period: 10,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 55 %
         - Recoil effect (Restricted arc if above 1.00): 0,07
   Seaboat quality  (Average = 1.00): 0,73

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,396
   Length to Beam Ratio: 9,09 : 1
   'Natural speed' for length: 15,06 kts
   Power going to wave formation at top speed: 70 %
   Trim (Max stability = 0, Max steadiness = 100): 75
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      16,54 ft / 5,04 m
      - Forecastle (20%):   10,50 ft / 3,20 m
      - Mid (50%):      9,19 ft / 2,80 m
      - Quarterdeck (15%):   9,19 ft / 2,80 m
      - Stern:      9,19 ft / 2,80 m
      - Average freeboard:   10,13 ft / 3,09 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 181,7%
      - Above water (accommodation/working, high = better): 93,7%
   Waterplane Area: 3.472 Square feet or 323 Square metres
   Displacement factor (Displacement / loading): 41%
   Structure weight / hull surface area: 22 lbs/sq ft or 106 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,89
      - Overall: 0,57
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

6 tons misc weight deticated to the torpedo load

[ledeper]

I prefer a high sea keeping for speed
Their role is to be a sort of harbour protection Tbs

T1-T?, ESC Torpedoboat laid down 1915 (Engine 1913)

Displacement:
   349 t light; 360 t standard; 388 t normal; 410 t full load

Dimensions: Length overall / water x beam x draught
   229,54 ft / 227,69 ft x 18,04 ft x 5,74 ft (normal load)
   69,96 m / 69,40 m x 5,50 m  x 1,75 m

Armament:
      1 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1915 Model
     Quick firing gun in deck mount
     on centreline forward
      1 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1915 Model
     Quick firing gun in deck mounts
     on centreline, all aft
   Weight of broadside 32 lbs / 15 kg
   Shells per gun, main battery: 150
   4 - 18,0" / 457,2 mm above water torpedoes

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 11.086 shp / 8.270 Kw = 28,50 kts
   Range 2.500nm at 10,00 kts
   Bunker at max displacement = 50 tons
        Range at max speed 140 Nm

Complement:
   43 - 56

Cost:
   £0,065 million / $0,258 million

Distribution of weights at normal displacement:
   Armament: 4 tons, 1,0 %
   Machinery: 205 tons, 53,0 %
   Hull, fittings & equipment: 134 tons, 34,5 %
   Fuel, ammunition & stores: 38 tons, 9,9 %
   Miscellaneous weights: 6 tons, 1,5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     129 lbs / 58 Kg = 4,2 x 3,9 " / 100 mm shells or 0,1 torpedoes
   Stability (Unstable if below 1.00): 1,23
   Metacentric height 0,6 ft / 0,2 m
   Roll period: 10,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 52 %
         - Recoil effect (Restricted arc if above 1.00): 0,21
   Seaboat quality  (Average = 1.00): 1,03

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,575
   Length to Beam Ratio: 12,62 : 1
   'Natural speed' for length: 15,09 kts
   Power going to wave formation at top speed: 71 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 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 %):   10,50 ft / 3,20 m
      - Mid (50 %):      10,50 ft / 3,20 m
      - Quarterdeck (15 %):   10,50 ft / 3,20 m
      - Stern:      10,50 ft / 3,20 m
      - Average freeboard:   10,50 ft / 3,20 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 180,9 %
      - Above water (accommodation/working, high = better): 69,2 %
   Waterplane Area: 2.935 Square feet or 273 Square metres
   Displacement factor (Displacement / loading): 43 %
   Structure weight / hull surface area: 19 lbs/sq ft or 92 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 3,23
      - Overall: 0,60
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped