Tonga – History of Seafaring – Thor Heyerdahl – 1 Pa’anga – 2010 – Proof Silver Crown – Thor Heyerdahl (October 6, 1914, Larvik, Norway – April 18, 2002, Colla Micheri, Italy) was a Norwegian ethnographer and adventurer with a scientific background in zoology and geography. Heyerdahl became notable for his Kon-Tiki expedition, in which he sailed 4,300 miles by raft from South America to the Tuamotu Islands. All his legendary expeditions are shown in the Kon-Tiki Museum, Oslo.