HMAS CANBERRA, (frigate), apprehended the MV LENA near Heard Island and a boarding party fast roped on to the illegal fishing vessel. The next day CANBERRA apprehended the MV VOLGA, which was also fishing illegally in Australian waters. During this time CANBERRA was supported by HMAS WESTRALIA, (tanker),who refueled the frigate regularly to allow her to extend her time in the area.