Floating crane at Ipswich Docks lifts lock gate for inspection.
Titles read: 'Ipswich Docks - A Big Lift - Lifting A Lock Gate (50 tons) for inspection purposes by a giant floating crane'.
Huge floating crane turning; to move into position. Shots of crane silhouetted against the light sky; all black metal and wires. Diver prepares to go down & attach lifting tackle; he stands on ladder hooked at side of small boat as another man helps put the spherical diving helmet on him. Shots from various angles of the lock gate being lifted.
Photography by LB Leverett.
Canals; shipping industry; hydraulic systems; safety; construction (similar images).