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
Pierre François Étienne Bouvet de Maisonneuve to obtain a clear "casus belli", Bouvet anchored his ship at the entrance of Manila Bay, but stayed ready to set sail. Soon, "Antelope" and shore batteries opened up on "Entreprenant", which promptly retreated. Bouvet sailed to Corregidor Island and endeavored to blockade all shipping bound for Manila. After collecting enough prisoners in this way, on 3 September, he released them on parole under promise not to navigate at sea before "Mouche n° 6" would be released. Bouvet had them convey his ultimatum that if his conditions were not met the next day, he would attack the coasts of the