Postal cover carried on the first beer can boat expedition from Darwin to Singapore in September 1977 . Aboard the tipsy vessel were former Brisbane ALP mayor Clem Jones , seen below waving hat , and Darwin businessman Lutz Frankenfeld , hanging onto the rigging, the cover signed by the two adventurers . The trip was designed to promote Darwin's annual beer can regatte and the fact that the city was back on deck after Cyclone Tracy , keen to be part of Asia . After a wild voyage , the Can Tiki received a big maritime reception in Singapore.
