HMAS SWAN, (sloop), entered Boram Harbour, New Guinea, and carried out a bombardment of the Japanese occupied villages of Banahiton and Passam.
HMAS COLAC, (minesweeper), destroyed a Japanese gun position in a counter battery duel off Choiseul Bay, New Guinea. During the action COLAC was hit twice, and suffered two killed, (Steward B. M. P. Shute and AB S. R. Smith), and two wounded, as well as significant damage to the engine room. The engine room was eventually, flooded and had to be abandoned. Despite this damage the engines kept running, and COLAC was able to make it to Fauro Island, where she anchored the following day. COLAC was later towed to Sydney, which she reached on 18 June, for repairs.