British 18-inch torpedo


There have been a number of 18-inch torpedoes in service with the United Kingdom.
These have been used on ships of the Royal Navy and aircraft of both the Fleet Air Arm and Royal Air Force, while Royal Navy surface ships and submarines use 21-inch torpedoes.
The British "18-inch" torpedoes were in diameter, beginning with the "Fiume" Whitehead torpedo of 1890.

45 cm "Fiume" (Whitehead) torpedo

First introduced into British service in 1894.
Used on the River-class and 1905 Tribal-class destroyers.
Used on destroyers of the early 1900s.
Introduced on the 1908 members of the 1905 Tribal class destroyers. Used by torpedo boats built before the First World War and destroyers. Used by RAF flying boats in the 1920s.
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, used by Fleet Air Arm and RAF Coastal Command.

Mark XIV

The Mark XIV was an aircraft-launched torpedo. Stocks were lost with the fall of Singapore.

Mark XV

Electric torpedo project not completed.

Mark XVII

An air-dropped passive acoustic homing torpedo known as "Dealer" and "Dealer B". "Dealer" did not see service use, but its successor, "Dealer B", was issued from June 1954. Considered very successful, with approximately 1,200 being built, it served in both the Royal Navy and RAF until 1970. The Mark 30 Mod 1 had several improvements, but this program was cancelled in 1955 in favour of purchasing Mark 43 Mod 3 torpedoes from the US.