[2][1] Propulsion machinery consisted of two 16-cylinder Paxman YJCM diesel engines, which supplied 3,460 shaft horsepower (2,580 kW) to the two propellers.

[2][1] The ships were designed with as many commercial components as possible: the Attacks were to operate in remote regions of Australia and New Guinea, and a town's hardware store would be more accessible than home base in a mechanical emergency.

[3] Bayonet was laid down by Walkers Limited at Maryborough, Queensland[4] in October 1968, launched on 6 November 1968,[citation needed] and commissioned on 22 February 1969.

[citation needed] Although the vessel was retained by the Australian government, by 1999 she was in a dilapidated condition, so was scuttled on 21 September 1999, sinking off Cape Schanck, Victoria in Bass Strait, in an area known to divers as the Victorian Ships' Graveyard.

There is a hole in the foredeck at the forward gun position, and there is a substantial amount of wiring still present inside the wreck which may be an entanglement hazard.