4. These Regulations shall apply to–
(a)any United Kingdom ship; and
(b)as respects equipment other than marine pollution equipment which is not also equipment for securing the safety of ships and persons on them, any other ship being–
(i)a Class II(A) or IX ship;
(ii)a Class II ship operating on a scheduled service from any port in the United Kingdom to any port in another member State, or vice versa; or
(iii)a high-speed craft operating on–
(aa)a scheduled service from any port in the United Kingdom to any port in another member State, or vice versa; or
(bb)a voyage which is not an international voyage,
to which the Merchant Shipping (High-Speed Craft) Regulations 1996 apply(1).
S.I. 1996/3188.