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
DX-pedition reliance on amateur radio for communications was that of Kon-Tiki organized by Thor Heyerdahl in 1947 and using call sign LI2B. The activity of dedicated DX-peditions was pioneered by one-time ARRL president Robert W. Denniston, W0DX. Mr. Denniston's 1948 DX-pedition, using call sign VP7NG, was to the Bahamas and was called "Gon-Waki" ala Thor Heyerdahl's "Kon-Tiki" expedition the previous year. DX-peditions are planned and organized to help operators who need to contact that area to obtain an amateur radio award. There are several awards sponsored by various organizations based on contacting many different countries. Perhaps the most famous of these