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Rh United Kingdom, within twelve months, and in the case of Japan within eighteen months from the coming into force of the present Treaty; the work shall be completed within six months of the expiration of the above-mentioned periods.

Any of these ships which are not retained for training purposes shall be rendered unfit for warlike service within eighteen months, and finally scrapped within thirty months, of the coming into force of the present Treaty.

2. Subject to any disposal of capital ships which might be necessitated, in accordance with the Washington Treaty, by the building by France or Italy of the replacement tonnage referred to in Article 1 of the present Treaty, all existing capital ships mentioned in Chapter II, Part 3, Section II of the Washington Treaty and not designated above to be disposed of may be retained during the term of the present Treaty.

3. The right of replacement is not lost by delay in laying down replacement tonnage, and the old vessel may be retained until replaced even though due for scrapping under Chapter II, Part 3, Section II, of the Washington Treaty.

1. For the purposes of the Washington Treaty, the definition of an aircraft carrier given in Chapter II, Part 4 of the said Treaty is hereby replaced by the following definition:

The expression "aircraft carrier" includes any surface vessel of war, whatever its displacement, designed for the specific and exclusive purpose of carrying aircraft and so constructed that aircraft can be launched therefrom and landed thereon.

2. The fitting of a landing-on or flying-off platform or deck on a capital ship, cruiser or destroyer, provided such vessel was not designed or adapted exclusively as an aircraft carrier, shall not cause any vessel so fitted to be charged against or classified in the category of aircraft carriers.

3. No capital ship in existence on the 1st April, 1930, shall be fitted with a landing-on platform or deck.

1. No aircraft carrier of 10,000 tons (10,160 metric tons) or less standard displacement mounting a gun above 6.1-inch (155 mm.) calibre shall be acquired by or constructed by or for any of the High Contracting Parties.

2. As from the coming into force of the present Treaty in respect of all the High Contracting Parties, no aircraft carrier of 10,000 tons (10,160 metric tons) or less standard displacement mounting agun above 6.1-inch (155 mm.) calibre shall be constructed within the jurisdiction of any of the High Contracting Parties.

An aircraft carrier must not be designed and constructed for carrying a more powerful armament than that authorised by Article IX or Article X