In the case where the form of the IOPP Certificate or its
Supplement is amended, and this amendment does not cause a shortening
of the validity of the ship’s IOPP Certificate, the existing
form of the certificate or supplement which is current when the amendment
enters into force may remain valid until the expiry of that certificate,
provided that, at the first survey after the date of entry into force
of the amendment, necessary changes are indicated in the existing
certificate or supplement by means of suitable corrections, e.g. striking
over the invalid entry and typing the new entry.