A wannan lokaci 70 madubai da aka yi amfani da, kowane tare da wani jan karfe shafi da kuma wani size na kusa da biyar da uku feet (1.5 da 1 m). A madubai da aka nuna a kan wani plywood kwaikwaiyo na wani Roman warship a nesa na kusa da 160 feet (50 m). A lokacin da madubai da aka mayar da hankali daidai, da jirgin ruwa ya fashe a cikin harshen wuta a cikin 'yan seconds. A plywood jirgin yana da wani shafi na tar, wanda zai iya yi wani painted konewa. A shafi na tar zai kasance kowa a kan jiragen ruwa a cikin classic zamanin. A watan Oktoba na shekara ta 2005 a rukuni daga Massachusetts Cibiyar Fasaha Bus gudanar da wani gwaji tare da daya 127 square-foot (30 cm) katako tayal, sanya a kusa da teku a kusa da 1.5 da 3 feet (1.5 da 1 m). A wannan lokaci 70 madubai da aka yi amfani da, kowane tare da jan karfe shafi da kuma girman da ke kusa da 5 feet (1.5 da 1 m). A watan Disamba na shekara ta 2006, wani gwaji da aka gudanar a kusa da jirgin ruwa ya sake faruwa a kusa da San Francisco.
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