Section 51 in The Inland Steam Vessels (Madhya Pradesh) Rules, 1962
51.
In all channels, no steam or motor vessels shall travel at a greater speed than six miles an hour, and between sunset and sunrise, the speed shall not exceed three miles an hour. The speed shall be reduced to three miles an hour during day and to two miles an hour between sunset and sunrise when passing round a bend or when approaching a lock or other navigation works. The speed of steam and motor vessels passing through tunnels shall not exceed two miles an hour. Dock, tunnels and wharves shall be approached dead slow.
