Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors) > Humber Conservancy > Humber Charts: Surveys conducted by the Humber Conservancy Board (including cross sections and sounding sheets) > Humber Conservancy Board: Middle Humber (Hull Roads) Annual Surveys > River Humber [Hull Roads Sounding Sheet]—Skitter Haven to Barton Haven: Surveyed by direction of the Humber Conservancy Board