Blue flashing lights
19.—(1) Vessels of the following organisations are authorised to exhibit a blue flashing light in the course of their duties:
Queen’s Harbour Master Plymouth
Ministry of Defence Police
Her Majesty’s Customs and Excise
Her Majesty’s Coastguard
Devon and Cornwall Constabulary—Marine Police Unit
Devon Fire and Rescue Service—Plymstock Fire boat
The Royal National Lifeboat Institution
The Torpoint Ferry
(2) Save with the licence in writing signed by the Queen’s Harbour Master no other vessel is to exhibit a blue flashing light (of any frequency) on the waters of the Dockyard Port of Plymouth.
(3) All vessels shall be ready to respond to instructions and requests for assistance from vessels displaying blue flashing lights.
