 The Morris Canal had inclined planes as well as locks, and the former required keepers also, although one cannot exactly call them "lock keepers" since they did not tend a lock, but an inclined plane which did much of the same function as a lock, lifting or lowering boats from one level to another, albeit with a cradle which carried the boats.There were often conflicts between the boat captains and the lockkeepers.In July 1874 on the Chesapeake and Ohio Canal, there was a notorious incident, where the boat's tow line caught and tore the lock railing and the captain of the boat insisted on scrubbing the boat's sides with a broom while still in the lock.