(1) Vessels the keels of which were laid or were at a similar stage of
construction before the 1st January 2017, currently under survey to
earlier Editions of the Code, may continue to be considered under
the standards in force at the time of the initial survey, with the
exception of:
(2) Vessels the keels of which were laid or were at a similar stage of
construction on or after the 1st January 2017, shall comply with
this edition of the code in its entirety.