8. The Secretary of State may grant an exemption from all or any of the provisions of regulations 5 and 6(4) and (5) (as may be specified in the exemption) for a ro-ro passenger ship or high speed craft which is not normally operating on a regular scheduled service but which is to undertake a single passage to or from a port in the United Kingdom as part of such a service, if he is satisfied that:
(a)compliance with such provision is either impracticable or unreasonable in that case, and
(b)the exemption is subject to such conditions and limitations as will provide a level of safety which in the opinion of:
(i)the Secretary of State,
(ii)the administration of the party to the Stockholm Agreement which is the flag state of the ship or craft, and
(iii)the administration of each party to the Stockholm Agreement to or from which the passage is being undertaken,
is adequate for the intended passage.
(2) The Secretary of State may, on giving reasonable notice, alter or cancel any exemption granted under paragraph (1).
(3) An exemption granted under paragraph (1) and an alternation or cancellation under paragraph (2) shall be given in writing and shall specify the date on which it takes effect and the terms (if any) on which it is given.