MULTILATERAL-NAVAL ARMAMENT-MARCH 25, 1936 of the present Treaty, but in any case not later than the 1st April, 1937, the maximum calibre of gun carried by capital ships shall be 16 in. (406 mm.) . (3) No capital ship of sub-category (a), the standard displacement of which is less than 17,500 tons (17,780 metric tons), shall be laid down or acquired prior to the 1st January, 1943. (4) No capital ship, the main armament of which consists of guns of less than 10 in. (254 mm.) calibre, shall be laid down or acquired prior to the 1st January, 1943. Article 5 (1) No aircraft carrier shall exceed 23,000 tons (23,368 metric tons) standard displacement or carry a gun with a calibre exceeding 6 1 in. (155 mm.). (2) If the armament of any aircraft carrier includes guns exceed- ing 5.25 in. (134 mm.) in calibre, the total number of guns carried which exceed that calibre shall not be more than ten. Sub-category (a), new construction. Main armament of guns less than 10 in. calibre. Aircraft carriers, gun calibre restriction. Number limited. Article 6 (1) No light surface vessel of sub-category (b) exceeding 8,000 tons (8,128 metric tons) standard displacement, and no light surface vessel of sub-category (a) shall be laid down or acquired prior to the 1st January, 1943. (2) Notwithstanding the provisions of paragraph (1) above, if the requirements of the national security of any High Contracting Party are, in His opinion, materially affected by the actual or authorised amount of construction by any Power of light surface vessels of sub-category (b), or of light surface vessels not conforming to the restrictions of paragraph (1) above, such High Contracting Party shall, upon notifying the other High Contracting Parties of His intentions and the reasons therefor, have the right to lay down or acquire light surface vessels of sub-categories (a) and (b) of any standard displacement up to 10,000 tons (10,610 metric tons) subject to the observance of the provisions of Part III of the present Treaty. Each of the other High Contracting Parties shall thereupon be entitled to exercise the same right. (3) It is understood that the provisions of paragraph (1) above constitute no undertaking expressed or implied to continue the restrictions therein prescribed after the year 1942. Article 7 No submarine shall exceed 2,000 tons (2,032 metric tons) standard displacement or carry a gun exceeding 5.1 in. (130 mm.) in calibre. Light surface ves- sels of sub-category (b), etc., construc- tion. Modifications. Time provision. Submarine gun cal- ibre. 1373
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