Five wide channels ( Tiefstack-and Billbrookkanal , Tidekanal , Industriekanal and Moorfleeter Kanal ) are used for drainage and are also navigable by ships with shallow draft .
Five shallow channels ( Tiefstack-and Billbrookkanal , Tidekanal , Industriekanal and Moorfleeter Kanal ) are used for drainage and are also navigable by ships with wide draft .