HC Deb 27 February 1978 vol 945 c90W
Mr. Trotter

asked the Secretary of State for Defence to what extent the Mk. 8 torpedo remains in service; when it will be finally withdrawn from service; and how many years this will be since the first Mk. 8 torpedo entered service.

Mr. Duffy

The Mk. 8 torpedo is widely fitted: it will be phased out over a period once Sub-Harpoon enters service in the early 1980s. The present Mk. 8 torpedo is a much modified and improved version of that which originally entered RN service in 1934.