as both Elizabeth and Henderson Island. Thomas Raine, master of the ship Surry of London, named it Henderson's Island because it appeared to him, from a conversation he had with James Henderson at Valparaíso, to have been Henderson's discovery. On 20 November 1820, a sperm whale rammed and sank the Nantucket whaleship Essex (a report of which inspired Herman Melville to write Moby-Dick), and the ship's 20 crewmen arrived at Henderson on 20 December in three small whaleboats. They found the island's only known drinkable water source – a brackish spring on the north shore, exposed at half tide – and ate fish, birds, eggs, crabs and peppergrass, but within a week they had largely exhausted the readily available food. Therefore, on 27 December, the three boats set sail for South America, leaving behind Thomas Chappel, Seth Weeks and William Wright who chose to stay and survived until their rescue several months later, on 9 April 1821. In 1902, Henderson Island, along with Oeno and Ducie islands, was formally annexed to the British Empire by Captain G. F. Jones, who visited the islands in a cutter with a crew of Pitcairn Islanders. In August 1937, HMS Leander, on a journey from Europe to New Zealand, carried out an aerial survey of Henderson, Oeno and Ducie, and, on each island, a British flag was planted and an inscription was nailed up proclaiming: "This island belongs to H.B.M. King George VI". In 1957, a 27-year-old American, Robert Tomarchin, lived the life of a castaway on the island for approximately two months, accompanied by a pet chimpanzee, apparently as a publicity stunt, until people from Pitcairn rescued him in two longboats. In the early 1980s, the American businessman Arthur "Smiley" Ratliff expressed interest in establishing a mansion for himself on the island, with an airstrip. The Pitcairn Island Council approved his plans but, after environmentalists lobbied to protect the natural ecology and environment of the island, the British Foreign and Commonwealth Office overrode the decision and vetoed the proposed development. Henderson Island was listed as a World Heritage Site in 1988. In 2019, a group of scientists, journalists, film makers, and artists took part in an expedition to Henderson Island to investigate plastic pollution and marine litter on the island. Five members of the expedition became stranded on the island when their inflatable craft capsized. In 2021, Pitcairn Islanders participated in a scientific