One Man's Odyssey: "Ibn Battuta is one of history's great explorers. He set out from his native Tangier in 1325, when he was just 21. By the time he returned home for good almost 30 years later, he had covered some 120,000 km and nearly every part of the Islamic world"
A display at the Ibn Battuta Mall in Dubai purports to compare the size of ships used by Zheng He and by Christopher Columbus.(Zheng He - the Chinese Muslim Admiral ) give a clear idea of the relative size of these two ships. Columbus's ship St. Maria was only 85 feet long whilst Zheng He's flag ship was an astonishing 400 feet.