# The Petroleum (Production) (Seaward Areas) Regulations 1988, Paragraph 7


In this Schedule–
“low water line” means the line so marked on the Ordnance Survey maps on a scale of 1:25,000 in the edition for the areas to which they respectively relate last published prior to the date on which these Regulations are made, and any reference to a map reference point shall be construed as a reference to a point having that map reference on the National Grid for those Ordnance Survey maps; and “nautical miles” means international nautical miles of 1,852 metres.

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Source: https://www.legislation.gov.uk/uksi/1988/1213/schedule/1/paragraph/7 (the official version)
Page: https://openlegislation.uk/petroleum-production-seaward-areas-regulations-1988/schedule-1/paragraph-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.