8.—(1) Where a vessel is carrying any of the dangerous goods specified in Schedule 1, the master of that vessel shall ensure that it displays—
(a)in the case of a vessel with a mast—
(i)during the day, a flag complying with the requirements of Parts 1 and 2 of Schedule 2, and
(ii)at times of restricted visibility or during the night, an all-round red light giving a clear, uniform and unbroken light visible in good night time conditions for a distance of at least 2 nautical miles;
(b)in the case of a vessel without a mast—
(i)during the day, a flag complying with the requirements of Parts 1 and 3 of Schedule 2, and
(ii)when moored or anchored during the night and during the day in restricted visibility, an all-round red light.
(2) Any flag or light required by paragraph (1) to be displayed shall be positioned so as to be as conspicuous as is reasonably practicable, and in the case of a light, so that it is above any other light being displayed by the vessel.
(3) Any dumb craft must have either its towing craft or, when moored, its accompanying craft display the appropriate flag or light as detailed in the paragraphs above.
(4) This regulation does not apply to a ferry operated entirely within Category A-D waters within the meaning of the Merchant Shipping (Categorisation of Waters) Regulations 1992.