Indian coracles are either saucer or bowl shaped and circular, with the greatest diameter across the mouth. The circular coracles in Iraq are very similar, but they have convexly curved sides, and thus the mouth is not the widest part. Indian coracles are on average about 7.3 feet (2.24 metres) in diameter, but can still hold eight people at a time. Other kinds of coracles usually can only hold one person. Indian coracles, and coracles in general, are made of bamboo and take about a day to build, given all the necessary materials. The bottoms of the boats are covered in hides, or sometimes with sheets of plastic, in order to make them waterproof. In modern times, a sheet of LDPE plastic is often embedded between two layers of bamboo. Sometimes the bottom of the craft is tarred to make it waterproof. Coracles are steered and propelled using a single paddle from the front of the boat in the direction of travel, making them unique.