Editing HMS J3 (section)

==Operational history==
After the war, the [[British Admiralty]] decided that the best way to protect the Pacific region was with a force of submarines and cruisers.<ref name=Bastock86/> To this end, they offered the six surviving submarines of the J-class to the [[Royal Australian Navy]] as gifts.<ref name=Bastock86/> ''J1'' and her sisters were commissioned into the RAN in April 1919, and sailed for Australia on 9 April, in the company of the cruisers {{HMAS|Sydney|1912|2}} and {{HMAS|Brisbane|1915|2}}, and the tender {{HMAS|Platypus|1917|2}}.<ref name=Bastock86/> The flotilla reached Thursday Island on 29 June, and Sydney on 10 July.<ref name=Bastock86/> Because of the submarines' condition after the long voyage, they were immediately taken out of service for refits.<ref name=Bastock86/>

Apart from local exercises and a 1921 visit to Tasmania, the submarines saw little use, and by June 1922, the cost of maintaining the boats and deteriorating economic conditions saw the six submarines decommissioned and marked for disposal.<ref name=Bastock86/>