Mersey Docks and Harbour Board
Coordinates: 53°28′1″N 3°1′12.5″W / 53.46694°N 3.020139°W
The Mersey Docks and Harbour Company (MDHC), formerly the Mersey Docks and Harbour Board (MDHB), owns and administers the dock facilities of the Port of Liverpool, on the River Mersey, England. These include the operation of the enclosed northern dock system that runs from Prince's Dock to Seaforth Dock, in the city of Liverpool and the dock facilities built around the Great Float of the Wirral Peninsula, located on the west side of the river.
Peel Ports, the MDHC's parent company, owns other maritime facilities in the area, including the Cammell Laird shipyard, Tranmere Oil Terminal and the Manchester Ship Canal.
Liverpool Common Council's Dock Committee was the original port authority. In 1709 it had been authorised to construct Liverpool's first enclosed ship basin, the Old Dock, which was the world's first commercial wet dock. By 1750 the old Dock Committee was replaced by the Liverpool Dock Trustees.
In order to provide stone for the construction of the expanded dock system, from 1830 the trustees (and later the MDHB) operated large quarries at Creetown, Scotland.
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