The Kon-Tiki Voyage

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Thor Heyerdahl, (born October 6, 1914, Larvik, Norway—died April 18, 2002, Colla Micheri, Italy) was a Norwegian ethnologist and adventurer who organized and led the famous Kon-Tiki and Ra transoceanic scientific expeditions. Both expeditions were intended to prove the possibility of ancient transoceanic contacts between distant civilizations and cultures. For the most part, Heyerdahl’s theories have not been accepted by anthropologists.

The Kon-Tiki voyage led by Norwegian explorer was a huge success and proved beyond doubt that Polynesia could have been settled from South America.  It did, however, do nothing to prove that it was. More recent advances in genetic testing and radiocarbon dating have shown that, whilst some South American origins are present in the Polynesian DNA pool, the vast majority is distinct. There’s no conclusive proof of origin, and how and why the Moai on Rapa Nui got into place is still unknown. But thanks to Thor Heyerdahl, a South American influence is one possible explanation.

One of the great mysteries of anthropology is how Polynesia – a vast pseudo-country in the Pacific spread triangularly between Rapa Nui, Hawaii and New Zealand – came to be inhabited by people with similar customs, cultures and, notably, languages. One theory, advanced in the 1930s is that the Islands were populated step-by-step from South-East Asia. But many remained unconvinced, including a Norwegian Explorer and Ethnographer by the name of Thor Heyerdahl. Thor’s theory was that the islands making up Polynesia were settled from the West by natives of South America using ‘drift voyaging’ – basically building a raft with a sail and letting the ocean take you. His primary evidence was the Moai statues on Rapa Nui (known in the West as Easter Island) which, he claimed, owed more to South American than Asian culture. There was also the legend of Kon-Tiki Viracocha, a native chief who is said to have set sail from Peru into the sunset on a balsawood raft.

When making these claims, Heyerdahl was dismissed by most anthropologists with one, Herbert Spinden, exclaiming ‘Sure, see how far you get yourself sailing from Peru to the South Pacific on a balsa Raft!’ Not one to turn down such a challenge, even though it wasn’t necessarily serious, Thor Heyerdahl decided to do just that. Heyerdahl was determined to build his raft only using the materials that were available to Peruvians in the pre-Columbian era (before 1492). Design-wise, they went off illustrations of ancient Indigenous Peruvian ships, as recorded by the Spanish conquistadors. The materials available back then were balsa wood, hemp, bamboo and banana leaves. There were no nails, bolts or fiberglass – the crew literally lashed tree trunks together with hemp ropes and built a bamboo cabin with a thatched banana leaf roof. The result was Kon-Tiki: a floating bamboo hut on balsawood logs. It had a large sail and a single cabin, which must have been tight for the crew of six men and their pet parrot.

The crew – Thor set about assembling a crew, each of which could bring a useful skill to the voyage. All had to be hardy and courageous – this was to be a long and treacherous voyage – and it wasn’t long before he’d found his team. In total, the six-man crew consisted of five Norwegians and one Swede.

Herman Watzinger was a thermodynamics engineer. He was in the US studying cooling technology when he met Thor Heyerdahl by chance. He asked if he could join the voyage and Thor agreed instantly, making him second in command. Throughout the voyage he gathered vast amounts of data, providing insights into this largely unstudied area of the ocean at the time.

Erik Hesselberg was a childhood friend of Thor’s who had, as a trained sailor, spent several years in the merchant navy. Thor made him the navigator on the voyage and, thanks to his arts education, was also the one who created the iconic Kon-Tiki image that adorned the raft’s sails.

Knut Haugland was a telegraph operator who, during World War II had participated in the Norwegian heavy water sabotage in 1943, one of the most successful acts of sabotage in the war, preventing the Germans from obtaining heavy water to use in nuclear weapons.

Torstein Raaby was also a wartime telegrapher who had successfully provided the Allies with information on German warships through tapping the German’s communications.

Bengt Danielsson was a Swedish Sociologist specializing in Human Migration Theory. Bengt served as steward, in charge of rations, as well as translator, being the only crew member who spoke Spanish.

Though remaining on dry land, Gerd Vold Hurum was the seventh, and perhaps most vital, member of the team. A code specialist from the Norwegian Embassy in Washington, she was the secretary of the expedition. Her role was to coordinate communications between Washington and the raft, which she could then pass on to Norway. At the end of the voyage she arranged for their repatriation and for the voyagers to meet with President Truman in the White House.

The voyage – The team travelled to Ecuador to secure a supply of balsa wood and then on to Peru where they built the raft. The raft carried around 1000 liters of drinking water in both ancient and modern containers – to prove that ancient storage was up to the task – and foods such as sweet potatoes and coconuts that would have been available to the ancient voyagers. Thor also secured radio equipment and field rations from contacts in the US military. They also had a radio for emergency contact, a hand-cranked generator to power it and a sextant for navigation. According to Heyerdahl, these items were not crucial to proving or disproving that such a trip would have been possible back in pre-Columbian times, rather, they were precautionary items to help ensure the crew’s survival.

All told, Heyerdahl and co. kept things fairly traditional. One of the most absurd parts of the whole story is that Kon-Tiki was designed so that it was impossible to steer. This was because, according to Heyerdahl’s theory, South Americans had drifted on the currents and the winds that consistently blew from East to West across the Pacific during certain months of the year.

The team set sail on April 28th 1947, initially being towed by the Peruvian navy to avoid traffic close to the coast. They then rode the Humboldt Current and the trade winds, roughly due west. On July 30th the team caught first sight of land – the atoll of Puka-Puka. 5 days later, after 97 days at sea, they reached the Angatau atoll where they made contact with the inhabitants but were unable to safely land the craft. Two days later, on August 7th, the raft struck a reef and eventually beached on an uninhabited islet off the coast of Raroia atoll. After a few days, washed up flotsam from the raft alerted villagers nearby who then arrived on canoes to rescue the voyagers. They were taken to the nearby island and welcomed with traditional feasts and dances. Shortly afterwards, they were taken to Tahiti by a French schooner, with the raft towed behind. Their arrival in Polynesia three and a half months later demonstrated the possibility that the Polynesians may have originated in South America. The story of the voyage was related in Heyerdahl’s book Kon-Tiki (1950) and in a documentary motion picture of the same name.

The Kon-Tiki museum  – Located in Oslo, the museum is a record of everything related to the expedition. You can read the whole story and see photos of the crew along the way. The Oscar-winning documentary of the voyage plays throughout the day. The crowning glory of the museum, however, is the original raft, which takes pride of place in the museum’s collection.

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