Dead Calm (1989)
In the middle of nowhere there is nowhere to hide.
Returning from duty with the Australian navy, John Ingram is surprised to be met by two policemen, who inform him of a car accident that has left his son dead and his wife Rae, injured. The grieving couple seeks refuge on their yacht, the Saracen. Out on the boat, the skies are sunny, the sea calm--but on the horizon is another vessel, the Orpheus. As John and Rae approach the ship, they find a lone survivor, Hughie Warriner, who tells them that the other crew members have died of food poisoning. Leaving Rae behind with the sleeping Hughie, the suspicious John boards the Orpheus--only to be confronted with a horrifying situation.