18-in Mark IX Torpedo (UK)

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18-in Mark IX Torpedo[1]

The 18-in Mark IX Torpedo was a lightweight British torpedo developed at the Royal Navy Torpedo Factory in 1916, intended for use by seaplanes.[2]

Development and History

Mark IX

It included an improved version of the heater and engine from the VI*** H torpedo, with B 2 design.

It was 12 feet, 10 inches in overall length, weighted 996 pounds and carried a 170 pound Amatol warhead. It could make 29 knots to 2,000 yards. It had -45.5 pounds buoyancy at total weight, and +16 pounds empty: 39 pounds air, 18.9 pounds water (282 fluid ounces), 2.1 pounds fuel (42 fluid ounces). The A.V. could hold 5 cubic feet at 1,500 psi action pressure.[3]

In 1918, "B" warheads with 250 pounds rather than 170 pounds of explosive were being manufactured.[4]

Footnotes

  1. Annual Report of the Torpedo School, 1916. Plate 9.
  2. Annual Report of the Torpedo School, 1916. p. 39.
  3. Annual Report of the Torpedo School, 1916. pp. 39-40.
  4. Annual Report of the Torpedo School, 1918. p. 26.

Bibliography

See Also