The Mark 54 Lightweight Hybrid Torpedo (LHT) is an anti-submarine warfare (ASW) torpedo used by the Royal Australian Navy. It is air-dropped by the Navy's MH-60R ASW helicopters.
Petty Officer Aviation Technician Avionics Trent Smith and Able Seaman Aviation Technician Avionics Sam Weir wheel the Mk54 torpedo off HMAS Parramatta's flight deck after it was removed from the embarked MH60-R Seahawk Helicopter.