# The Outer Dowsing Offshore Wind Farm Order 2026, Paragraph 4


The substances or articles authorised for deposit at sea are—
(a) iron and steel, copper and aluminium;
(b) stone and rock;
(c) concrete and grout;
(d) sand and gravel;
(e) plastic and synthetic;
(f) material extracted from within the offshore Order limits during construction drilling and seabed preparation for foundation works, cable preparation works and sandwave clearance works and excavation of trenchless technique exit pits;
(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/2026/138/schedule/11/paragraph/4 (the official version)
Page: https://openlegislation.uk/outer-dowsing-offshore-wind-farm-order-2026/schedule-11/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.