1.
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(a) The present Convention shall enter into force
twelve months after the date on which at least 15 States, the aggregate
of whose merchant fleets constitutes not less than 65 per cent by
number or by tonnage of the world fleet of vessels of 100 gross tons
and over have become Parties to it, whichever is achieved first.
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(b) Notwithstanding the provisions in subparagraph
(a) of this paragraph, the present Convention shall not enter into
force before 1 January 1976.
2. Entry into force for States which ratify, accept,
approve or accede to this Convention in accordance with article II
after the conditions prescribed in sub-paragraph 1(a) have been met
and before the Convention enters into force, shall be on the date
of entry into force of the Convention.
3. Entry into force for States which ratify, accept,
approve or accede after the date on which this Convention enters into
force, shall be on the date of deposit of an instrument in accordance
with article II.
4. After the date of entry into force of an amendment
to this Convention in accordance with paragraph 4 of article VI, any
ratification, acceptance, approval or accession shall apply to the
Convention as amended.
5. On the date of entry into force of this Convention,
the Regulations replace and abrogate the International Regulations
for Preventing Collisions at Sea, 1960.
6. The Secretary-General shall inform the Governments
of States that have signed or acceded to this Convention of the date
of its entry into force.