Mark 39 torpedo

United States Navy torpedo

Maximum speed 15.5 knots^[1]

Guidance
system

Wire^[1]

Launch
platform

Submarines^[1]

The Mark 39 torpedo was the first homing torpedo in United States Navy service to use a trailing wire for mid-course guidance through the submarine's fire control system. The Mark 39 was a Mark 27 Mod 4 torpedo converted for development of wire guidance techniques, which were eventually incorporated into the Mark 37 Mod 1 and the Mark 45. Due to this development, the Mark 39 was considered obsolete and the remaining inventory was scrapped.^[1]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q Jolie, E.W. (15 September 1978). "A Brief History of US Navy Torpedo Development: Torpedo Mine Mk39". Retrieved 21 June 2013.