Bouvet Island of establishing a manned meteorological radio station, but a suitable location could not be found. By then both the flagpole and hut from the previous year had been washed away. The Third "Norvegia" Expedition, led by Hjalmar Riiser-Larsen, arrived the following year and built a new hut at Kapp Circoncision and on Larsøya. The expedition carried out aerial photography of the island and was the first Antarctic expedition to use aircraft. The "Dependency Act", passed by the Parliament of Norway on 27 February 1930, established Bouvet Island as a dependency, along with Peter I Island and Queen Maud Land. The
Navassa Island an observation post for the duration of World War II. The island has been uninhabited since then. Fishermen, mainly from Haiti, fish the waters around Navassa. A scientific expedition from Harvard University studied the land and marine life of the island in 1930. After World War II amateur radio operators occasionally visited to operate from the territory, which is accorded "entity" (country) status by the American Radio Relay League. The callsign prefix is KP1. From 1903 to 1917, Navassa was a dependency of the U.S. Guantanamo Bay Naval Base, and from 1917 to 1996 it was under United States Coast