The Marksman class destroyer, (flotilla leader), HMAS ANZAC, (CMDR S. H. Simpson, RN), was commissioned. ANZAC was laid down in Denny Bros. Yard, UK, on 11 January 1917. In 1919 ANZAC was gifted to the RAN along with five S class destroyers.
The S class destroyer, HMAS TASMANIA, (LCDR H. O. Joyce, RN), was commissioned. TASMANIA was laid down in William Breadmore Yard on 23 November 1918.
The S class destroyer, HMAS TATTOO, (LCDR A. M. Roberts, DSO, RN), was commissioned. TATTOO was laid down in William Breadmore Yard, UK, on 21 December 1918.
The S class destroyer, HMAS SWORDSMAN, (LCDR C. E. Hughes-White, DSC, RN), was commissioned. SWORDSMAN was laid down in Scotts Yard, UK, on 28 December 1918.
The S class destroyer, HMAS SUCCESS, (LEUT O. R. Wace, RN), was commissioned. SUCCESS was laid down in Doxford Yard, UK, on 29 June 1918.
The S class destroyer, HMAS STALWART, was commissioned. STALWART was laid down in Swan Hunter Yard, UK, on 23 October 1918.