HMAS Darwin (FFG 04), named for the capital city of the Northern Territory, was an Adelaide-class guided-missile frigate, formerly in service with the Royal Australian Navy (RAN).

She was decommissioned on 9 December 2017 and was supposed to be scuttled as a dive wreck in Tasmania, but the deal was pulled by the Tasmanian Government and her fate remains uncertain.

[2] Although the Oliver Hazard Perry class was still at the design stage, the difficulty of fitting the Type 42 with the SM-1 missile, and the success of the Perth-class acquisition (a derivative of the American Charles F. Adams-class destroyer) compared to equivalent British designs led the Australian government to approve the purchase of two US-built Oliver Hazard Perry-class frigates in 1976.

[7][8] Propulsion machinery consists of two General Electric LM2500 gas turbines, which provide a combined 41,000 horsepower (31,000 kW) to the single propeller shaft.

[7][8] As part of the mid-2000s FFG Upgrade Project, an eight-cell Mark 41 Vertical Launch System was fitted, with a payload of RIM-162 Evolved Sea Sparrow missiles.

[8] The ship was laid down by Todd Pacific Shipyards at Seattle, Washington on 3 July 1981, to the Perry class Flight III design.

[6][12] The Adelaides were built as part of the United States Navy's construction program, so were assigned USN hull numbers; Darwin was FFG-44.

[12] Darwin underwent a major upgrade and refit at Garden Island during 2007 and 2008, returning to service prior to November 2008.

[23] In August 2018, Australian Defense Minister Marise Payne announced that Darwin would be scuttled as a reef in Skeleton Bay, near St Helens, Tasmania.