Bouvet Island island was claimed for the British Crown by George Norris, who named it Liverpool Island. He also reported Thompson Island as nearby, although this was later shown to be a phantom island. The first "Norvegia" expedition landed on the island in 1927 and claimed it for Norway. At this time the island was named "Bouvet Island", or "Bouvetøya" in Norwegian. After a dispute with the United Kingdom, it was declared a Norwegian dependency in 1930. It became a nature reserve in 1971. The island was discovered on 1 January 1739 by Jean-Baptiste Charles Bouvet de Lozier, commander of the French
Thompson Island (South Atlantic) in the 1890s, though in 1997 it was reported that the sea depth at the supposed location is greater than , rendering the existence of a submarine volcano all but impossible. Thompson Island continued to appear on maps published as late as 1943. Thompson Island (South Atlantic) Thompson Island was a phantom island in the South Atlantic. According to the Global Volcanism Program, it was thought to be about north-northeast of Bouvet Island, a small Norwegian dependency between South Africa and Antarctica. The island was first reported and named by whaling ship captain George Norris in 1825. The last reported