Yeah i remember that.Tom and Eileen Lonergan off the coast of Port Douglas. I actually listened to a podcast about it last week. They got left at sea but what happens afterwards is just speculation obviously. They took their wetsuits and life-jackets off though so probably drowned fairly quickly.
You want a ******* mad tale at sea to be made into a movie. IIRC the book was called "Alone". Its a dude- experience boatman/whatever, loved the water. Actually a surfer I think. Anyway, the crew all eat something massively dodgy for dinner (they're in Asian waters somewhere)- and the guy who is incredibly sick, vomits over the side of the boat, passes out for a second and falls overboard. Wakes up immediately- but no one is around. Boat just leaves without him..
He survived for something like 5 days???? With no floatation device and being eaten alive by things in the sea.
Was saved literally at the last minute.