USS Mahan (DLG-11/DDG-42), was a Farragut-class guided missile destroyer in the United States Navy. She was named for Rear Admiral Alfred Thayer Mahan USN (1840–1914). The ship was laid down as DLG-11 by the San Francisco Naval Shipyard on 31 July 1957 and launched on 7 October 1959.

HMAS Sydney (DDG 42), named after the city of Sydney, New South Wales, is the third and final ship of the Hobart-class air warfare destroyers operated by the Royal Australian Navy (RAN).

DDG-42 General Specifications. Class: Farragut-class guided missile destroyer. Complement: 21 Officers and 356 Enlisted. Displacement: 5800 tons. Length: 512.5 feet . Beam: 52 feet . Draft: 25 feet . Range: 4500Nautical Miles . Final Disposition: Disposed of by scrapping18 May 2004

Commissioned as a guided missile frigate (DLG), the USS MAHAN was reclassified as guided missile destroyer (DDG) on June 30, 1975, changing its hullnumber from DLG 11 to DDG 42. Decommissioned and stricken from the Navy list on June 15, 1993, the MAHAN was sold for scrapping on February 10, 1999.

DLG 11 / DDG 42 - USS Mahan . Type, Class: Guided Missile Destroyer; Farragut (Coontz) - class; planned as DL 11; built and commissioned as DLG 11; redesignated to DDG 42; Builder: San Francisco Naval Shipyard, San Francisco, California, USA. STATUS: Awarded: November 18, 1955. Laid down: July 31, 1957 (as DLG 11) Launched: October 7, 1959

USS Mahan (DLG-11/DDG-42): (DLG-11) was commissioned as a Farragut-class guided missile frigate in 1960, and reclassified as the guided missile destroyer (DDG-42) in 1975. She was decommissioned in 1993 and completely dismantled in 2004.

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USS John Rodgers (DD-983) and the USS Mahan (DDG-42) moored together along with other inactive ships at the Philadelphia Naval Shipyard inactive ship site in November 1999. Photo from Warship Boneyards, by Kit and Carolyn Bonner.

Feb 25, 2024 · HMAS Sydney (V) DDG 42 is the third and last of the Hobart-class air warfare destroyers built for the Royal Australian Navy. She was launched on 19 May 2018 and commissioned 18 May 2020. HMAS Sydney (V) DDG 42 at Fleet Base East 25 February 2024

The third Mahan (DLG-11) was laid down 31 July 1957 by the San Francisco Naval Shipyard; launched 7 October 1959; sponsored by Mrs. H. P. Smith, wife of Vice Adm. H. Page Smith; and...