This section states:
Where the Minister is satisfied that—
(a) any state (other than the State) has accepted or denounced the Convention or any convention or Protocol which has been ratified by the State and which amends or extends the Convention, or
(b) any such convention or Protocol extends, or ceases to extend, to any territory, he may by order so declare.
What is the position of tankers flying the flags of states who have not accepted or signed the Convention?