13.—(1) When requested to do so by a Contracting Government”, the Secretary of State—
(a)may cause a survey to be carried out in respect of a ship to which this regulation applies, and
(b)must, subject to the payment of any fee due under the Merchant Shipping (Fees) Regulations 2006, issue in respect of that ship a Sewage Certificate if the Secretary of State is satisfied that the requirements of Annex IV are complied with.
(2) A Sewage Certificate issued pursuant to paragraph (1) is to—
(a)be in English and in the form set out in the Appendix to Annex IV,
(b)contain a statement that it has been so issued, and
(c)have the same effect as if it had been issued by the Contracting Government” who made the request referred to in paragraph (1) and not by the Secretary of State.
(3) The Secretary of State must send as soon as possible to the Contracting Government” who made the request referred to in paragraph (1) a copy of—
(a)the Sewage Certificate issued pursuant to that paragraph, and
(b)the survey report.
(4) The Secretary of State must not issue a Sewage Certificate in respect of a ship which is—
(a)registered in a State whose Government is not a Contracting Government”, or
(b)is not registered, but is entitled to fly the flag of a State whose Government is not a Contracting Government”.