Ochroma 5th and 6th generations of the Chevrolet Corvette had floor pans composed of balsa sandwiched between sheets of carbon fiber reinforced plastic. Norwegian scientist and adventurer Thor Heyerdahl, convinced that early contact between the peoples of South America and Polynesia was possible, built the raft "Kon Tiki" from balsa logs, and upon it he and his crew sailed the Pacific Ocean from Peru to the Polynesian Tuamotu Archipelago in 1947. However, the Kon Tiki logs were not seasoned and owed much of their (rather slight) buoyancy to the fact that their sap was of lower density than seawater. This serendipitously
Torgeir Sæverud Higraff Torgeir Sæverud Higraff Torgeir Sæverud Higraff is an explorer, teacher and author with special interest in prehistoric transoceanic contact. Like Thor Heyerdahl, Higraff combines history, anthropology and traditional knowledge with expeditions. In 2002, the year Heyerdahl died, Higraff decided to recreate the Kon-Tiki expedition, and in 2006 the Tangaroa Expedition sailed from Peru to Raiatea in eastern Polynesia. Tangaroa outperformed Kon-Tiki by using an improved sail rig and active use of the guara centerboards. In 2014, Higraff proposed another expedition: to sail roundtrip from Peru to Easter Island. The Kon-Tiki2 expedition built two rafts in Callao in 2015 and reached