HMAS Warrnambool (FCPB 204)

Starting in the late 1960s, planning began for a new class of patrol boat to replace the Attack class, with designs calling for improved seakeeping capability, and updated weapons and equipment.[1] The Fremantles had a full load displacement of 220 tonnes (220 long tons; 240 short tons), were 137.6 feet (41.9 m) long overall, had a beam of 24.25 feet (7.39 m), and a maximum draught of 5.75 feet (1.75 m).[2] Main propulsion machinery consisted of two MTU series 538 diesel engines, which supplied 3,200 shaft horsepower (2,400 kW) to the two propeller shafts.[2] Exhaust was not expelled through a funnel, like most ships, but through vents below the waterline.[3] The patrol boat could reach a maximum speed of 30 knots (56 km/h; 35 mph), and had a maximum range of 5,000 nautical miles (9,300 km; 5,800 mi) at 5 knots (9.3 km/h; 5.8 mph).[2] The ship's company consisted of 22 personnel.[2] Each patrol boat was armed with a single 40 mm Bofors gun as main armament, supplemented by two .50 cal Browning machine guns and an 81 mm mortar,[2] although the mortar was removed from all ships sometime in the late 1990s. The main weapon was originally to be two 30-mm guns on a twin-mount, but the reconditioned Bofors were selected to keep costs down; provision was made to install an updated weapon later in the class' service life, but this did not eventuate.[4][3]

Warrnambool was built by North Queensland Engineers and Agents.[2] The ship was laid down on 30 September 1978, launched on 25 October 1980, and commissioned into the RAN on 14 March 1981.[5]

Warrnambool was decommissioned on 29 November 2005.

The patrol boat was broken up for scrap in Darwin during 2006 and 2007, at a cost of $450,000 to the Australian government.[6]

• Gillett, Ross (1988). Australian and New Zealand Warships since 1946. Brookvale, NSW: Child & Associates. ISBN 0-86777-219-0. OCLC 23470364.
• Jones, Peter (2001). "Towards Self Reliance". In Stevens, David (ed.). The Royal Australian Navy. The Australian Centenary History of Defence (vol III). South Melbourne, VIC: Oxford University Press. ISBN 0-19-555542-2. OCLC 50418095.
• Mitchell, Brett (2007). "Farewell to the Fremantle Class". In Forbes, Andrew; Lovi, Michelle (eds.). Australian Maritime Issues 2006 (PDF). Papers in Australian Maritime Affairs. Sea Power Centre - Australia. ISBN 0-642-29644-8. ISSN 1327-5658. Archived from the original (PDF) on 13 June 2011. Retrieved 12 May 2010.
  • The chapter is available separately as Semaphore, Issue 17, 2005 in PDF and HTML formats.
• Moore, John, ed. (1985). Jane's Fighting Ships 1985–86. London: Jane's Yearbooks. ISBN 0-7106-0814-4.