HMAS Darwin (FFG 04) was an Adelaide-class guided-missile frigate operated by the Royal Australian Navy, originally built as part of the United States Navy's Oliver Hazard Perry-class. Laid down on 3 July 1981 at Todd Pacific Shipyards in Seattle, she was launched on 26 March 1982 and commissioned into the RAN on 21 July 1984. The vessel measured 138.1 meters in length overall, with a beam of 13.7 meters and a full load displacement of approximately 4,100 tons. Her propulsion system comprised two General Electric LM2500 gas turbines generating a combined 41,000 horsepower, enabling a maximum speed of 29 knots and a range of 4,500 nautical miles at 20 knots. For maneuvering, she also carried two electric auxiliary propulsors capable of reaching speeds up to 4 knots. Armament originally included a Mark 13 missile launcher for RIM-66 Standard and RGM-84 Harpoon missiles, an OTO Melara 76mm gun, and a Vulcan Phalanx CIWS. During her 2007–2008 upgrade, she received an eight-cell Mark 41 Vertical Launch System for RIM-162 Evolved Sea Sparrow missiles and upgraded anti-submarine torpedo systems, transitioning from Mark 44 to Mark 46 and MU90 Impact torpedoes. Her sensor suite featured an AN/SPS-49 radar, AN/SPS-55 surface search radar, SPG-60 fire control radar, and AN/SQS-56 hull-mounted sonar. She could embark up to two helicopters, typically Seahawk models. Throughout her service, Darwin played a significant role in various operations, including five deployments to the Persian Gulf, participation in peacekeeping off East Timor as part of INTERFET in 1999, and operations in the Solomon Islands. She was involved in numerous maritime security efforts, including intercepting narcotics and weapon shipments, such as a notable seizure of weapons believed to be sent from Iran for Yemen's Houthi rebels in 2016. Darwin also participated in major fleet reviews and commemorative events, including the largest RAN fleet review in 2009 and the International Fleet Review in 2013 and 2016. After a major upgrade and refit at Garden Island, she returned to active service until her decommissioning on 9 December 2017. Her future was uncertain; plans to scuttle her as a dive wreck were canceled, and she remains in limbo, with her significance underscored by her extensive operational history and technological capabilities as a key component of Australia's naval capabilities during her service life.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.