3(1)A person may not navigate within or carry out any other activities or operations on, in, under or over the bed, banks, foreshore or waters of the Estuary within the area affected by the works at any time when that area is closed to navigation in pursuance of this paragraph.U.K.
(2)At any time when it appears to the Secretary of State to be necessary or convenient for the purposes of any of the works, he may close the area affected by the works to navigation by a direction given under this paragraph specifying the period during which that area is to be closed.
(3)Subsections (4) to (6) of section 8 of this Act shall apply in relation to a direction under this paragraph as they apply in relation to a direction under section 7 of this Act.
(4)Without prejudice to paragraph 6 of Schedule 2 to this Act, the Secretary of State may take such measures as he thinks fit to prevent access to the area affected by the works at any time when that area is closed to navigation in pursuance of this paragraph.