Ocean Going Torpedo Boats, Torpedo Boat Destroyers and Destroyers

[miketr]

As of 1920 H1


Class.......Units............Year..Displacement..Guns...............................................................Speed
TB-1889.....21...............1889..500...........47mm(3x1), 2 TT....................................................VTE 26 knots (deleted)
TB-1896.....21...............1896..450...........47mm(3x1), 2 TT....................................................VTE 27.5 knots (15 deleted / lost 6 remain)
TB-1904.....10...............1904..500...........47mm(3x1), 4 TT....................................................VTE 26.5 knots (refit 1915)
TB-1906.....10...............1906..500...........47mm(3x1), 4 TT....................................................Turbine 28.5 knots
TBD-1909....10...............1910..750...........105mm(3x1), 50mm(4x1) 6 TT.........................................Turbine 28 knots (1 lost)
TB-1909.....20...............1910..300...........75mm(1x1), 50mm(2x1) 4 TT..........................................Turbine 27 knots
TBD-1912....5................1912..1,000.........105mm(3x1), 50mm(2x1) 6 TT.........................................Turbine 30 knots
TBD-1917(L).3................1917..1,500.........120mm(5x1) 9 TT....................................................Turbine 32.5 knots
TBD-1917....12...............1917..1,000.........105mm(4x1) 6 TT....................................................Turbine 31.25 knots
TB-1920.....30...............1920..250...........75mm(1x1) 2 TT.....................................................Turbine 33 knots



TB-1 to 21 (TB 1889 Class)
TB-22 to 42 (TB 1896 Class)
TB-43 to 52 (TB 1904 Class)
TB-53 to 62 (TB 1906 Class)
TBD-73 to 82 (TBD 1910 Class)
TB-63 to 72 & TB 83 to 92 (TB 1910 Class)
TBD-93 to 97 (TBD 1912 Class)
TBD-98 to 100 (TBD 1917 (L) Class)
TBD-101 to 112 (TBD 1917 Class)
TB-113 to 142 (TB 1920 Class)

[miketr]

TB-1904, Iberia Torpedo Boat laid down 1904

Displacement:
   499 t light; 512 t standard; 574 t normal; 624 t full load

Dimensions: Length overall / water x beam x draught
   220.00 ft / 220.00 ft x 22.00 ft x 10.25 ft (normal load)
   67.06 m / 67.06 m x 6.71 m  x 3.12 m

Armament:
      3 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1904 Model
     Quick firing guns in deck mounts
     on centreline ends, majority forward
   Weight of broadside 10 lbs / 4 kg
   Shells per gun, main battery: 150
   4 - 18.0" / 457.2 mm above water torpedoes

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

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 9,987 ihp / 7,450 Kw = 26.50 kts
   Range 2,600nm at 10.00 kts
   Bunker at max displacement = 112 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   58 - 76

Cost:
   £0.067 million / $0.268 million

Distribution of weights at normal displacement:
   Armament: 1 tons, 0.2 %
   Armour: 3 tons, 0.4 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 3 tons, 0.4 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 347 tons, 60.5 %
   Hull, fittings & equipment: 144 tons, 25.1 %
   Fuel, ammunition & stores: 75 tons, 13.0 %
   Miscellaneous weights: 4 tons, 0.7 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     129 lbs / 58 Kg = 40.6 x 1.9 " / 47 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.38
   Metacentric height 0.9 ft / 0.3 m
   Roll period: 9.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 69 %
         - Recoil effect (Restricted arc if above 1.00): 0.03
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.405
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 14.83 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   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:      15.94 ft / 4.86 m
      - Forecastle (20 %):   10.14 ft / 3.09 m
      - Mid (50 %):      10.14 ft / 3.09 m
      - Quarterdeck (15 %):   10.14 ft / 3.09 m
      - Stern:      10.14 ft / 3.09 m
      - Average freeboard:   10.60 ft / 3.23 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 197.6 %
      - Above water (accommodation/working, high = better): 57.9 %
   Waterplane Area: 2,988 Square feet or 278 Square metres
   Displacement factor (Displacement / loading): 19 %
   Structure weight / hull surface area: 21 lbs/sq ft or 102 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.89
      - Overall: 0.59
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Good seaboat, rides out heavy weather easily

Torps 4 tons (4 tons each)

[miketr]

TB-1906, Iberia Torpedo Boat laid down 1906 (Engine 1905)

Displacement:
   499 t light; 511 t standard; 570 t normal; 616 t full load

Dimensions: Length overall / water x beam x draught
   220.00 ft / 220.00 ft x 22.00 ft x 10.30 ft (normal load)
   67.06 m / 67.06 m x 6.71 m  x 3.14 m

Armament:
      3 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1906 Model
     Quick firing guns in deck mounts
     on centreline ends, majority forward
   Weight of broadside 10 lbs / 4 kg
   Shells per gun, main battery: 150
   4 - 18.0" / 457.2 mm above water torpedoes

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

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 13,554 shp / 10,111 Kw = 28.50 kts
   Range 2,000nm at 10.00 kts
   Bunker at max displacement = 105 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   57 - 75

Cost:
   £0.065 million / $0.261 million

Distribution of weights at normal displacement:
   Armament: 1 tons, 0.2 %
   Armour: 3 tons, 0.4 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 3 tons, 0.4 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 334 tons, 58.6 %
   Hull, fittings & equipment: 157 tons, 27.6 %
   Fuel, ammunition & stores: 71 tons, 12.4 %
   Miscellaneous weights: 4 tons, 0.7 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     132 lbs / 60 Kg = 41.7 x 1.9 " / 47 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 0.7 ft / 0.2 m
   Roll period: 10.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0.03
   Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.400
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 14.83 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 (% = measuring location as a percentage of overall length):
      - Stem:      16.32 ft / 4.97 m
      - Forecastle (20 %):   10.38 ft / 3.16 m
      - Mid (50 %):      10.38 ft / 3.16 m
      - Quarterdeck (15 %):   10.38 ft / 3.16 m
      - Stern:      10.38 ft / 3.16 m
      - Average freeboard:   10.86 ft / 3.31 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 191.5 %
      - Above water (accommodation/working, high = better): 60.1 %
   Waterplane Area: 2,979 Square feet or 277 Square metres
   Displacement factor (Displacement / loading): 25 %
   Structure weight / hull surface area: 22 lbs/sq ft or 109 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 3.37
      - Overall: 0.61
   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

Torps 4 tons (1 tons each)

[miketr]

TB-1909, Iberia Torpedo Boat laid down 1909

Displacement:
   750 t light; 783 t standard; 853 t normal; 909 t full load

Dimensions: Length overall / water x beam x draught
   250.00 ft / 250.00 ft x 25.00 ft x 10.50 ft (normal load)
   76.20 m / 76.20 m x 7.62 m  x 3.20 m

Armament:
      3 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1909 Model
     Breech loading guns in deck mounts
     on centreline ends, majority aft, 2 raised mounts - superfiring
      2 - 1.97" / 50.0 mm guns in single mounts, 3.81lbs / 1.73kg shells, 1909 Model
     Quick firing guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
   Weight of broadside 114 lbs / 52 kg
   Shells per gun, main battery: 250
   4 - 18.0" / 457.2 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:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 21,000 shp / 15,666 Kw = 30.00 kts
   Range 2,700nm at 10.00 kts
   Bunker at max displacement = 126 tons (67% coal)

Complement:
   78 - 102

Cost:
   £0.104 million / $0.415 million

Distribution of weights at normal displacement:
   Armament: 14 tons, 1.7 %
   Armour: 9 tons, 1.0 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 9 tons, 1.0 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 468 tons, 54.9 %
   Hull, fittings & equipment: 241 tons, 28.2 %
   Fuel, ammunition & stores: 103 tons, 12.1 %
   Miscellaneous weights: 18 tons, 2.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     185 lbs / 84 Kg = 5.2 x 4.1 " / 105 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 0.8 ft / 0.3 m
   Roll period: 11.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.32
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.455
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 15.81 kts
   Power going to wave formation at top speed: 71 %
   Trim (Max stability = 0, Max steadiness = 100): 71
   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:      22.00 ft / 6.71 m
      - Forecastle (20 %):   18.00 ft / 5.49 m (11.07 ft / 3.37 m aft of break)
      - Mid (50 %):      11.07 ft / 3.37 m
      - Quarterdeck (15 %):   11.07 ft / 3.37 m
      - Stern:      11.07 ft / 3.37 m
      - Average freeboard:   12.78 ft / 3.89 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 192.8 %
      - Above water (accommodation/working, high = better): 73.2 %
   Waterplane Area: 4,003 Square feet or 372 Square metres
   Displacement factor (Displacement / loading): 39 %
   Structure weight / hull surface area: 26 lbs/sq ft or 125 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 3.40
      - Overall: 0.60
   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

Short range radio 10 tons and 4 torpedos and 4 tons construction reserve

[miketr]

TB-1909-S 300, Iberia Torpedo Boat laid down 1909

Displacement:
   300 t light; 311 t standard; 328 t normal; 342 t full load

Dimensions: Length overall / water x beam x draught
   200.00 ft / 200.00 ft x 20.00 ft x 7.18 ft (normal load)
   60.96 m / 60.96 m x 6.10 m  x 2.19 m

Armament:
      1 - 2.95" / 75.0 mm guns in single mounts, 12.88lbs / 5.84kg shells, 1909 Model
     Quick firing gun in deck mount
     on centreline forward
      2 - 1.97" / 50.0 mm guns in single mounts, 3.81lbs / 1.73kg shells, 1909 Model
     Quick firing guns in deck mounts
     on centreline, all aft, 1 raised mount
   Weight of broadside 21 lbs / 9 kg
   Shells per gun, main battery: 300
   4 - 20.0" / 508 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -               -
   2nd:   0.50" / 13 mm         -               -

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 7,951 shp / 5,932 Kw = 27.00 kts
   Range 1,000nm at 10.00 kts
   Bunker at max displacement = 31 tons (100% coal)

Complement:
   38 - 50

Cost:
   £0.037 million / $0.149 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0.8 %
   Armour: 2 tons, 0.7 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 2 tons, 0.7 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 175 tons, 53.4 %
   Hull, fittings & equipment: 106 tons, 32.3 %
   Fuel, ammunition & stores: 28 tons, 8.5 %
   Miscellaneous weights: 14 tons, 4.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     98 lbs / 45 Kg = 7.6 x 3.0 " / 75 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 0.6 ft / 0.2 m
   Roll period: 10.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.10
   Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.400
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 14.14 kts
   Power going to wave formation at top speed: 69 %
   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:      10.00 ft / 3.05 m
      - Forecastle (20 %):   9.75 ft / 2.97 m
      - Mid (50 %):      9.75 ft / 2.97 m
      - Quarterdeck (15 %):   9.75 ft / 2.97 m
      - Stern:      9.75 ft / 2.97 m
      - Average freeboard:   9.77 ft / 2.98 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 183.8 %
      - Above water (accommodation/working, high = better): 45.1 %
   Waterplane Area: 2,462 Square feet or 229 Square metres
   Displacement factor (Displacement / loading): 39 %
   Structure weight / hull surface area: 19 lbs/sq ft or 95 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 3.10
      - Overall: 0.59
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is extremely poor

Short range radio 10 tons and Four 20" torpedos (2x2) 4 tons

[miketr]

TBD-1912 IIa, Iberia Torpedo Boat Destroyer laid down 1912

Displacement:
   1,000 t light; 1,040 t standard; 1,183 t normal; 1,297 t full load

Dimensions: Length overall / water x beam x draught
   393.70 ft / 393.70 ft x 32.81 ft x 8.02 ft (normal load)
   120.00 m / 120.00 m x 10.00 m  x 2.44 m

Armament:
      3 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1912 Model
     Breech loading guns in deck mounts
     on centreline ends, majority forward, 1 raised mount
      2 - 1.97" / 50.0 mm guns in single mounts, 3.81lbs / 1.73kg shells, 1912 Model
     Breech loading guns in deck mounts
     on side, all amidships
   Weight of broadside 114 lbs / 52 kg
   Shells per gun, main battery: 250
   6 - 20.0" / 508 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm         -               -
   2nd:   0.98" / 25 mm         -               -

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 19,500 shp / 14,547 Kw = 30.16 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 257 tons (67% coal)

Complement:
   100 - 131

Cost:
   £0.131 million / $0.523 million

Distribution of weights at normal displacement:
   Armament: 14 tons, 1.2 %
   Armour: 8 tons, 0.7 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 8 tons, 0.7 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 598 tons, 50.5 %
   Hull, fittings & equipment: 345 tons, 29.2 %
   Fuel, ammunition & stores: 183 tons, 15.4 %
   Miscellaneous weights: 35 tons, 3.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     416 lbs / 189 Kg = 11.8 x 4.1 " / 105 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.58
   Metacentric height 2.0 ft / 0.6 m
   Roll period: 9.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 68 %
         - Recoil effect (Restricted arc if above 1.00): 0.09
   Seaboat quality  (Average = 1.00): 1.26

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.400
   Length to Beam Ratio: 12.00 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   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 %):   13.12 ft / 4.00 m
      - Mid (50 %):      11.98 ft / 3.65 m
      - Quarterdeck (15 %):   11.98 ft / 3.65 m
      - Stern:      11.98 ft / 3.65 m
      - Average freeboard:   12.51 ft / 3.81 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 176.2 %
      - Above water (accommodation/working, high = better): 131.6 %
   Waterplane Area: 7,951 Square feet or 739 Square metres
   Displacement factor (Displacement / loading): 65 %
   Structure weight / hull surface area: 26 lbs/sq ft or 127 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.79
      - Overall: 0.52
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent
   Good seaboat, rides out heavy weather easily

Short range radio free, Six 20" torpedos (2x3) 6 tons and 29 tons construction reserve

[miketr]

Units:
Class TBD-1917 (L): TBD-98 (built 1917), TBD-99 (built 1918) and TBD-100 (projected 1919)
Class TBD-1917: TBD-101 to TBD-104 (built 1917), TBD-105 to TBD-108 (built 1918) and TBD-109 to TBD-112 (projected 1919)

TBD-1917a, Iberia Torpedo Boat Destroyer (L) laid down 1917 (Engine 1916)

Displacement:
   1,500 t light; 1,571 t standard; 1,744 t normal; 1,881 t full load

Dimensions: Length overall / water x beam x draught
   393.70 ft / 393.70 ft x 32.81 ft x 11.81 ft (normal load)
   120.00 m / 120.00 m x 10.00 m  x 3.60 m

Armament:
      5 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1917 Model
     Breech loading guns in deck mounts with hoists
     on centreline, evenly spread, 3 raised mounts
      4 - 0.49" / 12.5 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1917 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 264 lbs / 120 kg
   Shells per gun, main battery: 250
   9 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm         -               -
   3rd:   0.39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 33,653 shp / 25,105 Kw = 32.50 kts
   Range 7,000nm at 10.00 kts
   Bunker at max displacement = 310 tons

Complement:
   134 - 175

Cost:
   £0.377 million / $1.510 million

Distribution of weights at normal displacement:
   Armament: 33 tons, 1.9 %
   Armour: 13 tons, 0.8 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 13 tons, 0.8 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 910 tons, 52.2 %
   Hull, fittings & equipment: 476 tons, 27.3 %
   Fuel, ammunition & stores: 244 tons, 14.0 %
   Miscellaneous weights: 68 tons, 3.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     375 lbs / 170 Kg = 7.1 x 4.7 " / 120 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.19
   Metacentric height 1.3 ft / 0.4 m
   Roll period: 12.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.55
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.400
   Length to Beam Ratio: 12.00 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 60 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      14.93 ft / 4.55 m
      - Forecastle (20 %):   13.78 ft / 4.20 m
      - Mid (50 %):      13.12 ft / 4.00 m (11.48 ft / 3.50 m aft of break)
      - Quarterdeck (15 %):   11.48 ft / 3.50 m
      - Stern:      11.48 ft / 3.50 m
      - Average freeboard:   12.62 ft / 3.85 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 187.9 %
      - Above water (accommodation/working, high = better): 72.8 %
   Waterplane Area: 7,951 Square feet or 739 Square metres
   Displacement factor (Displacement / loading): 61 %
   Structure weight / hull surface area: 33 lbs/sq ft or 160 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.92
      - Overall: 0.53
   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

Short range radio 10 tons,
DD FC 25 tons,
nine 21" 2 ton torpedos (3x3) 18 tons
Fifteen 1/3 ton Depth Charges 5 tons
20 tons construction reserve
Trial Speed: 33.15

TBD-1917-1000a, Iberia Torpedo Boat Destroyer laid down 1917 (Engine 1916)

Displacement:
   999 t light; 1,039 t standard; 1,183 t normal; 1,299 t full load

Dimensions: Length overall / water x beam x draught
   393.70 ft / 393.70 ft x 32.81 ft x 8.02 ft (normal load)
   120.00 m / 120.00 m x 10.00 m  x 2.44 m

Armament:
      4 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1917 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 0.49" / 12.5 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1917 Model
     Breech loading guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 142 lbs / 64 kg
   Shells per gun, main battery: 200
   6 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 22,524 shp / 16,803 Kw = 31.25 kts
   Range 7,400nm at 10.00 kts
   Bunker at max displacement = 260 tons

Complement:
   100 - 131

Cost:
   £0.241 million / $0.962 million

Distribution of weights at normal displacement:
   Armament: 18 tons, 1.5 %
   Armour: 9 tons, 0.7 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 9 tons, 0.7 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 589 tons, 49.8 %
   Hull, fittings & equipment: 332 tons, 28.0 %
   Fuel, ammunition & stores: 184 tons, 15.5 %
   Miscellaneous weights: 52 tons, 4.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     364 lbs / 165 Kg = 10.3 x 4.1 " / 105 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.43
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 10.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.13
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.400
   Length to Beam Ratio: 12.00 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 57 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      13.12 ft / 4.00 m
      - Forecastle (20 %):   12.14 ft / 3.70 m
      - Mid (50 %):      11.15 ft / 3.40 m
      - Quarterdeck (15 %):   11.15 ft / 3.40 m
      - Stern:      11.15 ft / 3.40 m
      - Average freeboard:   11.58 ft / 3.53 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 177.3 %
      - Above water (accommodation/working, high = better): 117.2 %
   Waterplane Area: 7,951 Square feet or 739 Square metres
   Displacement factor (Displacement / loading): 63 %
   Structure weight / hull surface area: 26 lbs/sq ft or 129 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.62
      - Overall: 0.51
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform

Short range radio 10 tons
Six 21" torpedos (2x3) 12 tons
DD FC 25 tons
Fifteen 1/3 ton Depth Charges 5 tons
Trial Speed: 32.19

TBD-1500 (L)
Range 4,800 nm @ 12 knots
Range 1,500 nm @ 20 knots
Range 375 nm @ 32.5 knots

TBD-1000
Range 5,000 nm @ 12 knots
Range 1,600 nm @ 20 knots
Range 440 nm @ 31.25 knots

[miketr]

A new up dated light short range torpedo boat.  To be used in Philippines, Greece, Straits of Gibraltar, etc.  As such will be built in bulk with an order for 30.

Units:
TB-113 to TB-122 Built 1920
TB-123 to TB-132 to be Built 1921
TB-133 to TB-142 to be Built 1922

TB-1920-S-250 A, Iberia Torpedo Boat laid down 1920 (Engine 1916)

Displacement:
   250 t light; 258 t standard; 299 t normal; 332 t full load

Dimensions: Length overall / water x beam x draught
   223.10 ft / 223.10 ft x 18.70 ft x 5.91 ft (normal load)
   68.00 m / 68.00 m x 5.70 m  x 1.80 m

Armament:
      1 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1920 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, 1920 Model
     Anti-aircraft gun in deck mount
     on centreline aft, 1 raised gun
      2 - 0.49" / 12.5 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1920 Model
     Breech loading guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 15 lbs / 7 kg
   Shells per gun, main battery: 130
   2 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 10,001 shp / 7,461 Kw = 29.41 kts
   Range 270nm at 29.40 kts
   Bunker at max displacement = 75 tons

Complement:
   35 - 46

Cost:
   £0.078 million / $0.312 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 0.6 %
   Armour: 1 tons, 0.4 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1 tons, 0.4 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 162 tons, 54.2 %
   Hull, fittings & equipment: 76 tons, 25.5 %
   Fuel, ammunition & stores: 49 tons, 16.3 %
   Miscellaneous weights: 9 tons, 3.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     69 lbs / 31 Kg = 5.3 x 3.0 " / 75 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.28
   Metacentric height 0.6 ft / 0.2 m
   Roll period: 9.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 42 %
         - Recoil effect (Restricted arc if above 1.00): 0.05
   Seaboat quality  (Average = 1.00): 0.44

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.425
   Length to Beam Ratio: 11.93 : 1
   'Natural speed' for length: 14.94 kts
   Power going to wave formation at top speed: 69 %
   Trim (Max stability = 0, Max steadiness = 100): 81
   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:      10.17 ft / 3.10 m
      - Forecastle (20 %):   9.02 ft / 2.75 m
      - Mid (50 %):      7.87 ft / 2.40 m (4.59 ft / 1.40 m aft of break)
      - Quarterdeck (15 %):   4.59 ft / 1.40 m
      - Stern:      4.59 ft / 1.40 m
      - Average freeboard:   6.73 ft / 2.05 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 182.9 %
      - Above water (accommodation/working, high = better): 60.6 %
   Waterplane Area: 2,610 Square feet or 243 Square metres
   Displacement factor (Displacement / loading): 39 %
   Structure weight / hull surface area: 17 lbs/sq ft or 85 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.74
      - Overall: 0.52
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Caution: Lacks seaworthiness - very limited seakeeping ability

Two 21" (2 t) Torpedos (2 x 2) 4 tons
15 Depth Charges 5 tons


Trial Speed: 33.92

Range
29.4 knots = 270 nm (9 hours)
25 knots = 460 nm
20 knots = 910 nm
15 knots = 2000 nm