1882–1883 a German expedition for the first International Polar Year set up its base at Royal Bay on the southeast side of the island. The scientists of this group observed the transit of Venus and recorded waves produced by the 1883 eruption of Krakatoa. Seal hunting at South Georgia began in 1786 and continued throughout the 19th century. The waters proved treacherous and a number of vessels were wrecked there, such as , in late 1801. 20th and 21st centuries South Georgia became a base for whaling beginning in the 20th century. A Norwegian, Carl Anton Larsen, established the first land-based whaling station and first permanent habitation at Grytviken in 1904. It operated through his Argentine Fishing Company, which settled in Grytviken. The station operated until 1965. Whaling stations operated under leases granted by the Governor of the Falkland Islands. The seven stations, all on the north coast with its sheltered harbours, were, from the west to east: Prince Olav Harbour Leith Harbour Stromness Husvik Grytviken Godthul Ocean Harbour The whaling stations' tryworks were unpleasant and dangerous places to work. One was called "a charnel house boiling wholesale in Vaseline" by an early 20th-century visitor. Tim Flannery wrote that its "putrid vapors [resembled] the pong of bad fish, manure, and a tanning works mixed together", and noted one bizarre peril: "A rotting whale could fill with gas to bursting, ejecting a fetus the size of a motor vehicle with sufficient force to kill a man." With the end of the whaling industry, the stations were abandoned. Apart from a few preserved buildings such as the South Georgia Museum and Norwegian Lutheran Church at Grytviken, only their decaying remains survive. From 1905, the Argentine Meteorological Office cooperated in maintaining a meteorological observatory at Grytviken under the British lease requirements of the whaling station until these changed in 1949. In 1908, the United Kingdom issued further letters patent that established constitutional arrangements for its possessions in the South Atlantic. The letters covered South Georgia, the South Orkneys, the South Shetlands, the South Sandwich Islands, and Graham Land. The claim was extended in 1917 to include a sector of Antarctica reaching to the South Pole. In 1909, an administrative centre and residence were established at King Edward Point on South Georgia, near the whaling station of Grytviken. A permanent local British administration and resident magistrate exercised effective possession, enforcement of British law, and