18 December 1940
30 June 1943
|Dimensions & Displacement|
|Draught||8 feet 7 inches|
|Crew||4 Officers and 23 Ratings|
|Other Armament||2 Depth Charge Chutes|
Gunbar was requisitioned for war service from the North Coast Steam Navigation Company of Sydney, on 30 September 1940 at a charter rate of £120 per month.
She commissioned on 18 December 1940 under the command of Temporary Lieutenant Norman M. Muzzell, RANR(S), and commenced duty in waters off the south east coast of Australia.
In April 1941 Gunbar proceeded to Fremantle and operated on the west Australian coast until January 1942 when she was based in Darwin.
She was present in Darwin harbour at the time of the first Japanese air raid on 19 February 1942, suffering nine casualties. One AB died of wounds and eight others (including Lieutenant Muzzell) were wounded. After discharging five of the wounded, Gunbar stood by the stricken MV Portmar and succeeded in evacuating the crew of that vessel. The Captain and the remainder of the wounded crew then obtained medical treatment for themselves.
Gunbar remained in the Darwin area until April 1943 when she proceeded to Sydney, paying off to maintenance reserve on 30 June 1943. Later she was converted to a Boom Gate Vessel at Port Kembla and recommissioned on 21 October 1943. For the remainder of her service she operated in the Sydney and Port Kembla area before paying off on 3 December 1945.
Early in 1946 she was purchased out right by the RAN and subsequently sold to A.J. Ellerker and Co of Sydney on 25 July 1946.