§ Mr. Trotterasked the Secretary of State for Defence what mark of torpedo will be the main anti-surface ship armament of the submarine fleet until the Sub-Harpoon enters service in the early 1980s; when the first model of the mark concerned first entered service; and when the last torpedoes of the mark were manufactured.
§ Mr. DuffyThe Mark 8 torpedo. The original version was introduced in 1934; the last of the current version was manufactured in 1952. This torpedo has had many modifications built into it, based on operational experience, and these modifications have improved its effectiveness and reliability.