6.—(1) Subject to the provisions of this Order the Council may, for the purposes of constructing and maintaining the authorised works, from time to time deepen, dredge, scour, cleanse and improve the bed of the sea and foreshore of the harbour as adjoin or are near to the works.
(2) The Council may use, appropriate or dispose of any material (other than wreck within the meaning of Part IX of the Merchant Shipping Act 1995(1)) from time to time dredged by them from the harbour.
(3) No material so dredged shall be deposited below the level of high water except in such places and in accordance with such conditions and restrictions as may be approved or prescribed by the Secretary of State.