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
William Willis (sailor) effect Bernard Carnot's escape, which he eventually accomplished. During his first solo expedition in 1954 from South America to American Samoa, he sailed 6,700 miles – 2,200 miles farther than did Thor Heyerdahl on Kon-Tiki. His raft was named "Seven Little Sisters" and was crewed by himself, his parrot, and cat. Willis was age 61 at the time of this voyage. In a second great voyage ten years later, at the age of 71, he sailed 10,000 miles from South America to Australia single-handing a 34-foot (10.4 m) raft named "Age Unlimited". He left Callao on 5 July 1963, made