HMAS Acute (P 81) was an operated by 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. Propulsion machinery consisted of two 16-cylinder Paxman YJCM diesel engines, which supplied to the two propellers.

Acute was laid down by Evans Deakin and Company at Brisbane, launched on 26 August 1967, and commissioned on 26 April 1968.

Operational history

Acute was predominantly used for training of Royal Australian Navy Reserve personnel at Fremantle, Western Australia. Before the Two Ocean Policy was completely implemented, the patrol boat was for several years the only warship assigned to Western Australia (with the nickname "The Lone Gun of the West Coast"), and responsible for patrolling an area extending from Albany to Broome.

Acute paid off on 6 May 1983. She was transferred to the Indonesian Navy and renamed Silea. The patrol boat was listed in Jane's Fighting Ships as still operational in 2011.