Attack-class patrol boat of the Royal Australian Navy
HMAS "Bayonet" (P 101) was an of the Royal Australian Navy (RAN).
Design and construction.
The "Attack" class was ordered in 1964 to operate in Australian waters as patrol boats (based on lessons learned through using the s on patrols of Borneo during the Indonesia-Malaysia Confrontation, and to replace a variety of old patrol, search-and-rescue, and general-purpose craft. Initially, nine were ordered for the RAN, with another five for Papua New Guinea's Australian-run coastal security force, although another six ships were ordered to bring the class to twenty vessels. The patrol boats had a displacement of 100 tons at standard load and 146 tons at full load, were in length overall, had a beam of , and draughts of at standard load, and at full load. Propulsion machinery consisted of two 16-cylinder Paxman YJCM diesel engines, which supplied to the two propellers. The vessels could achieve a top speed of , and had a range of at . The ship's company consisted of three officers and sixteen sailors. Main armament was a bow-mounted Bofors 40 mm gun, supplemented by two .50-calibre M2 Browning machine guns and various small arms. The ships were designed with as many commercial components as possible: the "Attack"s 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.
"Bayonet" was laid down by Walkers Limited at Maryborough, Queensland in October 1968, launched on 6 November 1968, and commissioned on 22 February 1969.
Operational history.
"Bayonet" was transferred to the Melbourne Port Division of the Royal Australian Naval Reserve on 27 March 1982.
Fate.
"Bayonet" paid off on 26 June 1988. 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.
The wreck lies upright on the sand at a depth of . Sand ripples around the wreck are evidence of strong currents in the area. The deck is at an average depth of . 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. Dives on he Bayonet require the use of trimix to limit nitrogen narcosis.
Latitude: 38° 43.050′ S, Longitude: 144° 35.250′ E, Datum: WGS84 
Citations.
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