Auxiliary Ketch
5 March 1943
Dimensions & Displacement
Length 31 feet 5 inches
Beam 9 feet 4 inches
Draught 3 feet 6 inches
Speed 12 knots
Guns 1 x .303 inch Vickers Machine Gun

With much of the Royal Australian Navy fleet deployed to foreign waters in the early years of World War II, the defence of Australia’s coastlines became a primary concern for the Naval Board. The Naval Auxiliary Patrol (NAP) was a war-raised unit approved on 25 June 1941, charged with patrolling and safeguarding Australia's inner harbours, ports, rivers and estuaries against enemy sabotage or attack. The NAP fleet was comprised primarily of former pleasure craft, offered freely by their owners.

In May 1942, the NAP was transferred to the Royal Australian Naval Volunteer Reserve (RANVR) and was thereafter known as the RANVR NAP. By October 1942 the total strength of the NAP had increased to over 3000 mobilised and unmobilised reserves. This was to remain the case until early 1944 when it was considered that the danger of enemy attack was remote enough to reduce the strength of the NAP to a minimum.

Hermione was a 31 foot Auxiliary Ketch that served as a Naval Auxiliary Patrol vessel. The boat was requisitioned by the Australian Government on 5 January 1943, before being commissioned into the RAN on 5 March 1943. The boat was purchased by the Australian Government on 11 August 1943. HMAS Hermione was decommissioned and later sold in April 1945.

HMAS Hermione first appeared in the April 1943 edition of the Navy List:
HMAS Hermione first appeared in the April 1943 edition of the Navy List: