However, by the 18th century the docks in Liverpool grew larger and so increased competition with Bristol for the tobacco trade. The limitations of Bristol's docks were causing problems to business, so in 1802 William Jessop proposed installing a dam and lock at Hotwells to create the floating harbour. Construction of the £530,000 scheme began in May 1804, including the construction of the Cumberland Basin, the tidal new cut and a feeder canal to Temple Meads. Entrance was via locks, which had a maximum width of . The harbour was officially opened on 1 May 1809.