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does not accept the amendment within a period of twelve months after the amendment comes into force, shall, upon the expiry of this period, cease to be a party to the present Convention. (f) Any amendment to the present Convention made under this Article which relates to the structure of a ship shall apply only to ships the keels of which are laid after the date on which the amendment comes into force. (g) The Organization shall inform all Contracting Governments of any amendments which come into force under this Article, together with the date on which such amendments shall come into force. (h) Any acceptance or declaration under this Article shall be made by a notification in writing to the Organization, which shall notify all Contracting Governments of the receipt of the acceptance or declaration. Article X Signature and Acceptance {a) The present Convention shall remain open for signature for one month from this day's date and shall thereafter remain open for acceptance. Governments of States may become parties to the Convention by : (i) Signature without reservation as to acceptance ; (ii) Signature subject to acceptance followed by acceptance ; or (iii) Acceptance. (b) Acceptance shall be effected by the deposit of an instrument with the Organization, which shall inform all Governments that have already accepted the Convention of each acceptance received and of the date of its receipt. Article XI Coming into Force (a) The present Convention shall come into force on the Ist January, 1951, provided that at least twelve months before that date, not less than fifteen acceptances, including seven by countries each with not less than one million gross tons of shipping, have been deposited in accordance with Articles X and XV. (b) Should fifteen acceptances in accordance with paragraph (a) of this Article not have been deposited twelve months before the Ist January, 1951, the present Convention shall come into force twelve months after the date on which the last of such acceptances is deposited. The Organization shall inform all Governments which have signed or accepted the present Convention of the date on which it comes into force. (c) Acceptances deposited after the date on which the present Convention comes into force shall take effect three months after the date of their deposit. Article XII Denunciation (a) The present Convention may be denounced by any Contracting Government at any time after the expiry of five years from the date on which the Convention comes into force for that Government.

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