Corbitas were truly built for any weather. The one Hero and Lucia boarded was medium in size with a single large square sail on a mast amidships and a small square sail on an artemon mast over the bows. It was steered with two deep steering oars, one on each quarter, which in strong winds and high seas required as many as four men on each oar to control the vessel. The stern was high enough to withstand large waves during storms. Their journey was about four hundred miles and sailing in this wind should ideally take them to their destination in less than three days, assuming that with the wind changes their course would not be a straight line.