(1) The Director may, at the written request of an owner of a Hong Kong ship required to be measured and certified in accordance with Part II of these regulations-
(a) which is a ship the keel of which is laid or is at a similar stage of construction not later than 31 December 1985; or
(b) which is a cargo ship of less than 1600 tons gross tonnage as ascertained in accordance with regulation 13(3) of these regulations, the keel of which is laid or is at a similar stage of construction before 18 July 1994,
permit such a ship to have, additionally, its gross tonnage ascertained by the Certifying Authority in accordance with the provisions set out in Schedule 5 and Appendices 1 to 4 thereto, and to use this tonnage for the purpose of the application of the provisions of regulations implementing the International Convention for the Safety of Life at Sea 1974 and the Protocol of 1978 relating to that Convention.
(2) The measurement of a ship in accordance with paragraph (1) above shall be in respect of gross tonnage only and an appropriate Tonnage Certificate shall be issued and it shall be endorsed with the following endorsement- (74 of 1990 Sch. 5)
"For use only for the application of the Interim Scheme for Tonnage Measurement for Certain Ships (IMO Resolution A494(XII))".
(3) Where the gross tonnage is ascertained in accordance with paragraph (1) above and a Safety of Life at Sea convention certificate is subsequently issued, then only that tonnage shall be recorded in that certificate and the certificate shall be endorsed with the following endorsement-
"The above gross tonnage has been measured by the Certifying Authority of Hong Kong in accordance with the tonnage regulations which were in force prior to the coming into force of the International Convention on Tonnage Measurement of Ships 1969".