Portal:Military of Australia/Units/October 21
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HMS J1 later HMAS J1 was a Royal Navy J class submarine built by HM Dockyard at Portsmouth in Hampshire and launched on 6 November 1915. J1 operated in patrols in the North Sea during World War I. She was transferred along with 5 other J class submarines to Australia on 25 March 1919 and operated out of Geelong in Victoria. She was paid off on 12 July 1922 sold on 26 February 1924 and sunk as a breakwater on 26 May 1926.
