Dredging areas are held under a commercial agreement (known as a Production Agreement) issued by The Crown Estate, who own the seabed out to 12 nautical miles and the mineral rights to the limit of UK territorial waters. Crown Estate Production Agreements are issued subject to the granting of a Marine Licence obtained by the Company from the Government following a rigorous environmental assessment process.

Two types of dredging technique are employed:

The vessel's activity is constantly recorded by a Crown Estate Electronic Monitoring System linked to the ships navigation system and dredge gear sensors. This records when and where the ship is dredging to ensure compliance with licence conditions

Once the aggregate dredgers reach the wharf they are able to self-discharge a dry cargo using a variety of techniques, including bucket wheels, scrapers and wire-hoisted grabs.


Further information

British Marine Aggregate Producers Association:

Resources and Operations