18.—(1) Subject to Schedule 14, the owner of a non-production installation must ensure that it is not moved in external waters with a view to its being operated there unless—
(a)the owner has prepared a safety case containing the particulars specified in regulation 16 and Schedule 7;
(b)the owner has sent the safety case to the competent authority at least three months (or such shorter period as the competent authority may specify) before the movement of the installation in those waters with a view to its being operated there; and
(c)the competent authority has accepted the safety case.
(2) The owner of a non-production installation must include with the safety case sent to the competent authority a statement, made after considering any reports or reservations of the verifier under regulation 9(2)(d), (3)(b) and (4)(c), that the record of safety and environmental-critical elements and their scheme of maintenance are or will be suitable.