Point Nepean marks the southern point of The Rip (the entrance to Port Phillip) and the most westerly point of the Mornington Peninsula, in Victoria, Australia. It was named in 1802 after the British politician and colonial administrator Sir Evan Nepean by John Murray in HMS Lady Nelson. It is within the suburb of Portsea. Its coast and adjacent waters are included in the Port Phillip Heads Marine National Park, while its land area is part of the Point Nepean National Park. Cheviot Beach is located on Point Nepean, where the SS Cheviot was wrecked in 1887 and Prime Minister of Australia, Harold Holt, disappeared on 17 December 1967, presumed drowned.