Between 1788 and 1868, about 162,000 convicts were transported from Britain and Ireland to various penal colonies in Australia. The British Government began transporting convicts overseas to American colonies in the early 18th century. When transportation ended with the start of the American Revolution, an alternative site was needed to relieve further overcrowding of British prisons and hulks. In 1770, James Cook had charted and claimed possession of the east coast of Australia for Britain. Seeking to pre-empt the French colonial empire from expanding into the region, Britain chose Australia as the site of a penal colony, and in 1787, the First Fleet of eleven convict ships set sail for Botany Bay, arriving on 20 January 1788, then sailing a short distance north to found Sydney, New South