At 8.55 am on 10 September 1979, the tanker World Encouragement was conducting berthing operations at an Australian Oil Refinery (AOR) mooring at Kurnell in Botany Bay, New South Wales, when oil began rising to the water surface from beneath the ship.
Survey vessels in these classes are required to carry a Scale F first aid kit on board: 1B, 1C (with unberthed passengers), 1D (with berthed passengers), 1E (with berthed passengers), 2B, 2C, 3B and 3C.
Survey passenger vessels with offshore operations Class 1C (with berthed passengers), 2B and 3B, are required to carry a Scale E medical cabinet and a Scale F First aid kit on board.