sentences:  It is a not-for-profit organisation and is based in Burnham-on-Crouch.As well as regulating all aspects of marine activity on the rivers, the Authority owns much of the river bed of the Crouch, and some parts of the Roach.The River Roach benefits from the Burnham inshore lifeboat run by the Royal National Lifeboat Institution and an Essex fire service boat, which is also based at Burnham.