Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors) > Humber Conservancy > Humber Conservancy Board: Technical drawings of Buoys, Launches, Lightvessels and other ships submitted to the Board by Manufactures and related papers > Humber Conservancy Board: Navigation Beacons, Buoys, and Floats > W. 4148 Humber Conservancy Buoy: 10'-0" Diameter Gas Buoy