Yes Andy, sorry, my mistake. It was the HMAS Arunta.....
HMAS ARUNTA (I) - HMA Ship Histories (Sea Power Centre - Australia) - "On 11 August 1942 ARUNTA began escorting convoys and other shipping between Australia and New Guinea. On 29 August she experienced her first contact with the enemy when she destroyed by depth charge the Japanese Submarine RO33 off Port Moresby. In September she continued escorting convoys to New Guinea and while thus engaged took on board the survivors of the SS ANSHUN at Milne Bay after that ship had been sunk by Japanese cruisers on the night of 6/7 September."
Thanks again