The Dockyard Port of Portsmouth Order 2005

Exclusion Zones

5.—(1) The Queen’s Harbour Master, on any occasion when it is necessary to facilitate or ensure a clear passage for any of Her Majesty’s vessels or vessels under the charge of Her Majesty’s Officers in the Dockyard Port may direct immediately before and once she becomes underway that there be an exclusion zone of up to 250 metres radius in the water around the vessel.

(2) The vessel which is to be given clear passage shall display—

(a) (by day) two diamond shapes vertically disposed where best seen; or

(b) (by night) two flashing red lights at the masthead horizontally disposed.

(3) Where a direction specified in paragraph (1) above has been given and whilst the shapes or light signals specified in paragraph (2) above are displayed—

(a) no vessel underway in the Dockyard Port, save any vessel authorised to escort the vessel to be given clear passage, shall enter the exclusion zone; and

(b) vessels alongside, at anchor, at a buoy or at a mooring within the exclusion zone shall remain in such a position whilst the exclusion zone remains in force.

(4) The exclusion zone shall remain in force until either—

(a) the vessel which is to be given clear passage leaves the limits of the Dockyard Port; or

(b) the Queen’s Harbour Master countermands the direction which promulgated the zone.

(5) A direction shall be given and countermanded using VHF Channel 11 or 13 and where practicable by the movements signal.