December 14, Captain Andersen decided to ship out to Australia without a cargo. The voyage was expected to take 45 days. On December 22 the København exchanged radio messages with the Norwegian steamer William Blumer, indicating they were about 900 miles from Tristan da Cunha and that "all is well". The Blumer attempted to contact the København again later that night, but received no response. The ship was never heard from again. She was officially announced "missing" by Lloyd's of London on 1 January 1930. Search and legacy Search and rescue efforts were not launched immediately after København dropped out of contact, due to the length of the voyage to Australia, and the fact that Andersen routinely went long periods without sending a message. After months without any sight of or word from København, concerns arose that something had gone wrong. In April 1929, four months after København was last seen and heard from, the Danish East Asiatic Company dispatched a motor vessel, the Mexico, to Tristan da Cunha. Residents reported having seen a large five-masted ship with its foremast broken on January 21, 1929; however, it had not attempted to land on the island. The Mexico, joined by the British Royal Navy, searched for the København for several months, but found no sign of it. The Danish government officially declared the ship and its crew were lost at sea. A number of theories for the København'''s disappearance have been advanced. The most commonly accepted is that the ship struck an iceberg in the dark or fog. If so, the ship may have sunk too quickly for the crew to react. The lack of wreckage found later may have been the result of the ship's particularly secure loading and rigging, a necessity against the strong winds known as the Roaring Forties. An alternate theory is that the ship, which was in ballast with no cargo, may have been capsized by heavy winds, disabling the lifeboats for survivors. For the next two years after the København's disappearance there were a number of sightings of a mysterious five-masted ship fitting its description in the Pacific, fueling further speculation about the vessel. Early reports came from Chilean fishermen, then in July 1930, the crew of an Argentine freighter sighted a five-masted "phantom ship" during a gale. The captain took their statements and wondered if this was the "wraith of the Copenhagen". Further sightings