No title - Telescopic tugs ease traffic problems at swing bridges. London's Royal Docks.
M/S stern of tug swinging round in river at the port of London. C/U inside the wheelhouse of the tug showing the skipper. C/U skipper at controls. C/U skipper putting his foot on the pedal to lower the wheelhouse. M/S of tug showing wheelhouse and mast being lowered. C/U aboard the tug showing the wheelhouse lowering into the deck. C/U of the top of the wheelhouse leaving just enough room for the skipper to look through. M/S of the tug passing under a very low bridge. Travel shot under the bridge. M/S of tug passing out of the other side. C/U man's foot on pedal. Various shots of the tug showing the wheelhouse returning to its normal position.