HMS J4 was a J class submarine laid down at Pembroke Dockyard, and was launched in February 1916.  She was one of the last of the J submarines to be launched, and was commissioned a few months later to 11th Submarine Flotilla. After the First World War she was given as a gift together with the other surviving J boats to the Royal Australia Navy. She was commissioned in RAN as HMAS J4 in March 1919, and arrived Australia four months later. All of them were taken out of service for repairs after arrival, and besides some local exercises she saw little action before she was stricken from the Navy lists in July 1922. She was scuttled with explosives outside Port Philip Heads 27. July 1927, and the wreck rest today on her keel with parts of her stern broken off on a depth of 26 meter. Also see the wrecks of her sister ships HMAS J1, HMAS J2, HMAS J3, HMAS J5, and HMS J6 who was sunk outside England in October 1918 .

Former names:
275,5 x 23,0 x 14,0 f
Tons: Built: Home Port:
1210 displ ( surfaced )
Pembroke ( UK ) 1915
( AU )

38° 18′ 45″ S, 144° 34′ 0″ E

Picture: HMAS J4 in 1919
Courtesy of Royal Australian Navy H

Last updated: February 2021