IV. (c) Torpedobooten (Torpedo Boats)

[swamphen]

IV. Torpedobooten (Torpedo-Boats).
..(c) Torpedobooten (Torpedo-boats).
.....TB1885 type
.....TB1892 type
.....TB1897 type
.....TB1915 type
.....TB1917 type

[swamphen]

TB1885 class

SMS S62 to S65 - refit 1903, sold 1907

[swamphen]

TB1892 class

SMS S80 - CTL 24 December 1907
SMS S81 - SUNK by NSS Pegasus 24 December 1907, Battle of the Afrika Rift

[swamphen]

TB1897 class

SMS S86 - MIA presumed sunk 16 December 1907
SMS S87 - MIA presumed sunk 16 December 1907
SMS S88 - scrapped 1914
SMS S89 - scrapped 1914



~175 tons

1x50mm
1x37mm
3x400mm torpedoes

1 shaft, 26 knots
1600 miles @ 12 knots

[Sachmle]

TB-1915 class

Brandenburg Torpedobooten laid down 1915 (Engine 1916)
S91, S92 laid down 1915 (former A-10 and A-11)

Displacement:
  580 t light; 598 t standard; 656 t normal; 702 t full load

Dimensions: Length overall / water x beam x draught
  242.78 ft / 234.58 ft x 23.46 ft x 9.84 ft (normal load)
  74.00 m / 71.50 m x 7.15 m  x 3.00 m

Armament:
     2 - 3.46" / 88.0 mm guns in single mounts, 22.05lbs / 10.00kg shells, 1908 Model
    Quick firing guns in deck mounts
    on centreline ends, evenly spread, 1 raised mount
     4 - 0.30" / 7.7 mm guns in single mounts, 0.01lbs / 0.00kg shells, 1916 Model
    Machine guns in deck mounts
    on side ends, evenly spread
  Weight of broadside 44 lbs / 20 kg
  Shells per gun, main battery: 200
  6 - 19.7" / 500 mm above water torpedoes

Machinery:
  Oil fired boilers, steam turbines,
  Direct drive, 2 shafts, 17,053 shp / 12,721 Kw = 29.60 kts
  Trial Speed = 31.31 kts  
  Range 2,900nm at 12.00 kts
  Bunker at max displacement = 104 tons

Complement:
  64 - 84

Cost:
  £0.120 million / $0.479 million

Distribution of weights at normal displacement:
  Armament: 5 tons, 0.8 %
  Machinery: 347 tons, 52.8 %
  Hull, fittings & equipment: 223 tons, 33.9 %
  Fuel, ammunition & stores: 76 tons, 11.6 %
  Miscellaneous weights: 6 tons, 0.9 %

Overall survivability and seakeeping ability:
  Survivability (Non-critical penetrating hits needed to sink ship):
    198 lbs / 90 Kg = 9.5 x 3.5 " / 88 mm shells or 0.2 torpedoes
  Stability (Unstable if below 1.00): 1.10
  Metacentric height 0.7 ft / 0.2 m
  Roll period: 11.9 seconds
  Steadiness   - As gun platform (Average = 50 %): 70 %
        - Recoil effect (Restricted arc if above 1.00): 0.19
  Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
  Hull has rise forward of midbreak
  Block coefficient: 0.424
  Length to Beam Ratio: 10.00 : 1
  'Natural speed' for length: 15.32 kts
  Power going to wave formation at top speed: 71 %
  Trim (Max stability = 0, Max steadiness = 100): 58
  Bow angle (Positive = bow angles forward): 16.70 degrees
  Stern overhang: 3.28 ft / 1.00 m
  Freeboard (% = measuring location as a percentage of overall length):
     - Stem:      16.40 ft / 5.00 m
     - Forecastle (20 %):   16.01 ft / 4.88 m
     - Mid (30 %):      16.01 ft / 4.88 m (12.01 ft / 3.66 m aft of break)
     - Quarterdeck (15 %):   12.01 ft / 3.66 m
     - Stern:      12.01 ft / 3.66 m
     - Average freeboard:   13.24 ft / 4.04 m
  Ship tends to be wet forward

Ship space, strength and comments:
  Space   - Hull below water (magazines/engines, low = better): 177.9 %
     - Above water (accommodation/working, high = better): 43.9 %
  Waterplane Area: 3,440 Square feet or 320 Square metres
  Displacement factor (Displacement / loading): 50 %
  Structure weight / hull surface area: 25 lbs/sq ft or 120 Kg/sq metre
  Hull strength (Relative):
     - Cross-sectional: 0.50
     - Longitudinal: 5.43
     - Overall: 0.63
  Hull space for machinery, storage, compartmentation is cramped
  Room for accommodation and workspaces is extremely poor
  Ship has slow, easy roll, a good, steady gun platform

[Sachmle]

TB1917 type
SMS S-101 through S-113 (former T-165 through T-177)

Displacement:
  500 t light; 524 t standard; 611 t normal; 681 t full load

Dimensions: Length overall / water x beam x draught
  229.65 ft / 225.66 ft x 20.51 ft x 10.83 ft (normal load)
  70.00 m / 68.78 m x 6.25 m  x 3.30 m

Armament:
     2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1906 Model
    Quick firing guns in deck mounts
    on centreline ends, evenly spread
     2 - 1.97" / 50.0 mm guns in single mounts, 3.86lbs / 1.75kg shells, 1905 Model
    Quick firing guns in deck mounts
    on side, all amidships
     2 - 0.30" / 7.7 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1905 Model
    Machine guns in deck mounts
    on side, all forward, all raised mounts - superfiring
  Weight of broadside 78 lbs / 36 kg
  Shells per gun, main battery: 250
  4 - 19.7" / 500 mm above water torpedoes, 1 sets of twin launcher amidships, 2 fixed singles on the forecastle.

Machinery:
  Oil fired boilers, steam turbines,
  Direct drive, 2 shafts, 18,000 shp / 13,428 Kw = 30.19 kts
  Trial Speed = 32.57 kts
  Range 4,600nm at 12.00 kts
  Bunker at max displacement = 157 tons

Complement:
  60 - 79

Cost:
  £0.128 million / $0.510 million

Distribution of weights at normal displacement:
  Armament: 10 tons, 1.6 %
  Machinery: 317 tons, 51.9 %
  Hull, fittings & equipment: 159 tons, 26.0 %
  Fuel, ammunition & stores: 111 tons, 18.2 %
  Miscellaneous weights: 14 tons, 2.3 %

Overall survivability and seakeeping ability:
  Survivability (Non-critical penetrating hits needed to sink ship):
    128 lbs / 58 Kg = 3.6 x 4.1 " / 105 mm shells or 0.2 torpedoes
  Stability (Unstable if below 1.00): 1.10
  Metacentric height 0.6 ft / 0.2 m
  Roll period: 11.5 seconds
  Steadiness   - As gun platform (Average = 50 %): 52 %
        - Recoil effect (Restricted arc if above 1.00): 0.29
  Seaboat quality  (Average = 1.00): 0.78

Hull form characteristics:
  Hull has rise forward of midbreak
  Block coefficient: 0.427
  Length to Beam Ratio: 11.00 : 1
  'Natural speed' for length: 15.02 kts
  Power going to wave formation at top speed: 71 %
  Trim (Max stability = 0, Max steadiness = 100): 67
  Bow angle (Positive = bow angles forward): 14.00 degrees
  Stern overhang: 0.00 ft / 0.00 m
  Freeboard (% = measuring location as a percentage of overall length):
     - Stem:      16.01 ft / 4.88 m
     - Forecastle (20 %):   12.01 ft / 3.66 m
     - Mid (40 %):      12.01 ft / 3.66 m (8.01 ft / 2.44 m aft of break)
     - Quarterdeck (15 %):   8.01 ft / 2.44 m
     - Stern:      8.01 ft / 2.44 m
     - Average freeboard:   9.93 ft / 3.03 m
  Ship tends to be wet forward

Ship space, strength and comments:
  Space   - Hull below water (magazines/engines, low = better): 183.2 %
     - Above water (accommodation/working, high = better): 40.5 %
  Waterplane Area: 2,899 Square feet or 269 Square metres
  Displacement factor (Displacement / loading): 43 %
  Structure weight / hull surface area: 23 lbs/sq ft or 112 Kg/sq metre
  Hull strength (Relative):
     - Cross-sectional: 0.50
     - Longitudinal: 2.77
     - Overall: 0.59
  Hull space for machinery, storage, compartmentation is cramped
  Room for accommodation and workspaces is extremely poor
  Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

8t = 4 Torpedoes
6t = 12 Depth Charges