Mersey Docks and Harbour Company
Overview
 
The Mersey Docks and Harbour Company (MDHC), formerly the Mersey Docks and Harbour Board (MDHB), owns and administers the dock
Dock (maritime)
A dock is a human-made structure or group of structures involved in the handling of boats or ships, usually on or close to a shore.However, the exact meaning varies among different variants of the English language...

 facilities of the Port of Liverpool
Port of Liverpool
The Port of Liverpool is the name for the enclosed 7.5 mile dock system that runs from Brunswick Dock in Liverpool to Seaforth Dock, Seaforth, on the east side of the River Mersey and the Birkenhead Docks between Birkenhead and Wallasey on the west side of the river...

, on the River Mersey
River Mersey
The River Mersey is a river in North West England. It is around long, stretching from Stockport, Greater Manchester, and ending at Liverpool Bay, Merseyside. For centuries, it formed part of the ancient county divide between Lancashire and Cheshire....

, England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

. These include the operation of the enclosed northern dock system that runs from Princes Dock
Princes Dock
Princes Dock is a dock on the River Mersey, England and part of the Port of Liverpool. It is the most southerly of the docks situated in the northern part of the Liverpool dock system, connected to Princes Half Tide Dock to the north...

 to Seaforth Dock
Seaforth Dock
Seaforth Dock is a purpose-built dock and container terminal, on the River Mersey, England, at Seaforth, to the north of Liverpool. As part of the Port of Liverpool and Liverpool Freeport, it is operated by the Mersey Docks and Harbour Company...

, in the city of Liverpool
Liverpool
Liverpool is a city and metropolitan borough of Merseyside, England, along the eastern side of the Mersey Estuary. It was founded as a borough in 1207 and was granted city status in 1880...

 and the dock facilities built around the Great Float
Great Float
The Great Float, is a body of water on the Wirral Peninsula, England formed from the natural tidal inlet, the Wallasey Pool. It is split into two large docks, East Float and West Float, both part of the Birkenhead Docks complex. The docks run approximately inland from the River Mersey, dividing...

 of the Wirral Peninsula
Wirral Peninsula
Wirral or the Wirral is a peninsula in North West England. It is bounded by three bodies of water: to the west by the River Dee, forming a boundary with Wales, to the east by the River Mersey and to the north by the Irish Sea. Both terms "Wirral" and "the Wirral" are used locally , although the...

, located on the west side of the river.

Peel Ports
Peel Group
The Peel Group is a diversified real estate, transport and infrastructure investment company in the United Kingdom. It has assets owned and under management approaching £6 billion...

, the MDHC's parent company, owns other maritime facilities in the area, including the Cammell Laird
Cammell Laird
Cammell Laird, one of the most famous names in British shipbuilding during the nineteenth and twentieth centuries, came about following the merger of Laird, Son & Co. of Birkenhead and Johnson Cammell & Co. of Sheffield at the turn of the twentieth century.- Founding of the business :The Company...

 shipyard, Tranmere Oil Terminal
Tranmere Oil Terminal
Tranmere Oil Terminal is situated on the River Mersey, 1½ miles south of Birkenhead. It was opened on 8 June 1960 to handle vessels of up to 65,000 tons, and is connected to the Stanlow Oil Refinery by a 15-mile pipeline...

 and the Manchester Ship Canal
Manchester Ship Canal
The Manchester Ship Canal is a river navigation 36 miles long in the North West of England. Starting at the Mersey Estuary near Liverpool, it generally follows the original routes of the rivers Mersey and Irwell through the historic counties of Cheshire and Lancashire. Several sets of locks lift...

.
Liverpool Town 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
Old Dock
The Old Dock, originally known as Thomas Steer's dock, was the world's first commercial wet dock.It was built on the River Mersey in Liverpool, England, starting in 1709 and completed in 1715, by enlarging a previous natural tidal creek which was the "Pool" that Liverpool was named after...

, which was the world's first commercial wet dock
Wet dock
A wet dock is a dock where the level of water in the dock is maintained despite the raising and lowering of the tide. This makes transfer of cargo easier. It works like a lock which controls the water level and allows passage of ships.-External links:...

.
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
Creetown
Creetown is a small seaport town in the Stewartry of Kirkcudbright, which forms part of the Galloway in the Dumfries and Galloway council area in south-west Scotland. Its population is about 750 people. It is situated near the head of Wigtown Bay, 18 mi. west of Castle Douglas...

, Scotland.

The Mersey Docks and Harbour Board took over running of Liverpool's docks from the Trustees in 1858.
 
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