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🔗 Polynesia 🔗 Anthropology 🔗 Norway 🔗 Archaeology 🔗 South America 🔗 Sailing

The Kon-Tiki expedition was a 1947 journey by raft across the Pacific Ocean from South America to the Polynesian islands, led by Norwegian explorer and writer Thor Heyerdahl. The raft was named Kon-Tiki after the Inca god Viracocha, for whom "Kon-Tiki" was said to be an old name. Kon-Tiki is also the name of Heyerdahl's book, the Academy Award-winning 1950 documentary film chronicling his adventures, and the 2012 dramatized feature film nominated for the Academy Award for Best Foreign Language Film.

Heyerdahl believed that people from South America could have reached Polynesia during pre-Columbian times. His aim in mounting the Kon-Tiki expedition was to show, by using only the materials and technologies available to those people at the time, that there were no technical reasons to prevent them from having done so. Although the expedition carried some modern equipment, such as a radio, watches, charts, sextant, and metal knives, Heyerdahl argued they were incidental to the purpose of proving that the raft itself could make the journey.

Heyerdahl's hypothesis of a South American origin of the Polynesian peoples, as well as his "drift voyaging" hypothesis, is generally rejected by scientists today. Archaeological, linguistic, cultural, and genetic evidence tends to support a western origin for Polynesians, from Island Southeast Asia, using sophisticated multihull sailing technologies and navigation techniques during the Austronesian expansion. However, there is evidence of some gene flow from South America to Easter Island.

The Kon-Tiki expedition was funded by private loans, along with donations of equipment from the United States Army. Heyerdahl and a small team went to Peru, where, with the help of dockyard facilities provided by the Peruvian authorities, they constructed the raft out of balsa logs and other native materials in an indigenous style as recorded in illustrations by Spanish conquistadores. The trip began on April 28, 1947. Heyerdahl and five companions sailed the raft for 101 days over 6,900 km (4,300 miles) across the Pacific Ocean before smashing into a reef at Raroia in the Tuamotus on August 7, 1947. The crew made successful landfall and all returned safely.

Thor Heyerdahl's book about his experience became a bestseller. It was published in Norwegian in 1948 as The Kon-Tiki Expedition: By Raft Across the South Seas, later reprinted as Kon-Tiki: Across the Pacific in a Raft. It appeared with great success in English in 1950, also in many other languages. A documentary motion picture about the expedition, also called Kon-Tiki, was produced from a write-up and expansion of the crew's filmstrip notes and won an Academy Award in 1951. It was directed by Heyerdahl and edited by Olle Nordemar. The voyage was also chronicled in the documentary TV-series The Kon-Tiki Man: The Life and Adventures of Thor Heyerdahl, directed by Bengt Jonson.

The original Kon-Tiki raft is now on display in the Kon-Tiki Museum at Bygdøy in Oslo.

🔗 Sailing

The Vestas Sailrocket was built to capture the sailing speed record competing in the B-class for 150 to 235 square feet of sail. It is piloted by the project leader Paul Larsen and sponsored by Danish wind turbines manufacturer Vestas. In 2008 the first version reached a reported unofficial speed of 52.22 knots (96.71 km/h), before crashing.

After being upgraded to a second version, the Vestas Sailrocket 2 began a campaign to break speed records in November 2012 off Walvis Bay, Namibia. On 12 November, it made a 54.08 knots (100.16 km/h) run over a 500 metres (1,600 ft) distance, then 59.23 knots (109.69 km/h) on the 16th. It attained 55.32 knots (102.45 km/h) on a one-mile run on the 18th and simultaneously 59.38 knots (109.97 km/h) on 500m. On 24 November, with wind speeds at roughly 25 knots (46 km/h), it ran the 500m course at 65.45 knots (121.21 km/h) with a 68.01 knots (125.95 km/h) peak. Both records are ratified by the World Sailing Speed Record Council (WSSRC) for the 500m and the mile.

A Swiss team of École Polytechnique Fédérale de Lausanne university students and engineers, including members involved in the development of previous record-holder Hydroptère, formed in October 2019 to develop a new hydrofoil boat, SP80, to exceed the Vestas Sailrocket 2 record in 2022, with a target speed of 80 knots. As of April 2023, the speed record attempts were pushed back to 2024 and are scheduled to take place in Leucate.