3.—(1) Subject to paragraph (2) below –
(a)these Regulations other than regulation 9 apply to sea-going United Kingdom ships; and
(b)regulations 1, 2, 3, 9 and 10 apply to non-United Kingdom sea-going ships (except fishing vessels) when in a United Kingdom port.
(2) These Regulations do not apply to –
(a)ships under 24 metres in length;
(b)pleasure craft;
(c)submersible craft; or
(d)offshore installations whilst on or within 500 metres of their working stations.
(3) The Secretary of State may grant exemptions from all or any of the provisions of these Regulations (as may be specified in the exemption) for classes of cases or individual cases on such terms (if any) as he may so specify and may, subject to giving reasonable notice, alter or cancel any such exemption.