On Monday, three men embarked on a perilous journey to stop a catastrophe from unfolding on Sydney's shoreline.
On a tugboat, in 9 metre swells, they worked for hours to prevent a cargo ship carrying fuel from ploughing into a cliff, saving the lives of 21 crew members and averting an ecological disaster.
Today we talk to those men about their extraordinary rescue mission.
Featured:
Brad Lucas, tugboat captain
Marius Fenger, engineer
Alex Alsop, deckhand