The term 'SINBAD'S TRANSPORT' is a reference to the mythical character Sinbad the Sailor, who is known for his seven voyages. The crossword solution for this term is ROC, which is a giant mythical bird from Arabian folklore. The ROC was said to be so large that it could carry an elephant in its talons. In the stories of Sinbad, the ROC is used as a form of transport, carrying Sinbad and his crew on their adventures.