On 21 September 1928 the
København departed from
Nørresundby in
Vendsyssel for
Buenos Aires on its tenth, and ultimately final, voyage. The captain was Hans Andersen; 75 persons were aboard, including 26 crew and 45
cadets. The goal was to unload a shipload of chalk and bagged cement in Buenos Aires, take on another load of cargo and sail for
Melbourne, and then bring a shipment of Australian wheat back to Europe. The
København arrived at Buenos Aires on 17 November 1928, impressing the locals, in particular emigrant Danes. The cargo was unloaded; however, the departure was delayed as there were no paying commissions to take the cargo to Australia. Finally, on 14 December, Captain Andersen decided to ship out to Australia without a cargo. The voyage was expected to take 45 days. On 22 December 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==