7Where a certificate, issued in pursuance of paragraph 6 and for the time being in force, is produced in respect of the ship to which the certificate relates—
(a)the ship shall be deemed to have been surveyed in accordance with the load line rules, and
(b)if lines are marked on the ship corresponding in number and description to the deck-line and load lines as required by the load line rules, and the positions of those lines so marked correspond to the positions of the deck-line and load lines so specified in the certificate, the ship shall be deemed to be marked as required by those rules.