In 1977-78 Rashad was a crew member on Thor Heyerdahl's Tigris expedition, helping to build a large reed boat that travelled from the marshes of Iraq across the Indian Ocean, exploring possible trading links between the Sumerians and other ancient civilisations of the Indus and Nile. This experience sparked his fascination with boats and with unanswered questions about ancient technologies, particularly organic construction techniques that have left no remains.