# The Hornsea Four Offshore Wind Farm Order 2023, Paragraph 4: Details of licensed marine activities

Extent: E+W+S

The substances or articles authorised for deposit at sea are—
(a) iron and steel, copper and aluminium;
(b) stone and rock;
(c) concrete;
(d) sand and gravel;
(e) plastic and synthetic;
(f) material extracted from within the offshore Order limits during construction drilling or seabed preparation for foundation works and cable installation preparation works;
(g) weights used for the calibration of vessels, consisting of a hessian sack, metal shackles or chains; and
(h) marine coatings, other chemicals and timber.

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Source: https://www.legislation.gov.uk/uksi/2023/800/schedule/11/part/1/paragraph/4 (the official version)
Page: https://openlegislation.uk/hornsea-four-offshore-wind-farm-order-2023/schedule-11/part-1/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.