of the Washington Treaty, or by Article 4 of the present Treaty, as the case may be.
Wherever in the said Articles IX and X the calibre of 6 inches (152 mm.) is mentioned, the calibre of 6.1 inches (155 mm.) is substituted therefor.
PART II
Article 6
1. The rules for determining standard displacement prescribed in Chapter II, Part 4 of the Washington Treaty shall apply to all surface vessels of war of each of the High Contracting Parties.
2. The standard displacement of a submarine is the surface displacement of the vessel complete (exclusive of the water in non-watertight structure) fully manned, engined, and equipped ready for sea, including all armament and ammunition, equipment, outfit, provisions for crew, miscellaneous stores, and implements of every description that are intended to be carried in war, but without fuel, lubricating oil, fresh water or ballast water of any kind on board.
3. Each naval combatant vessel shall be rated at its displacement tonnage when in the standard condition. The word "ton", except in the expression "metric tons", shall be understood to be the ton of 2,240 pounds (1,016 kilos.).
Article 7
1. No submarine the standard displacement of which exceeds 2,000 tons (2,032 metric tons) or with agun above 5.1-inch (130 mm.) calibre shall be acquired by or constructed by or for any of the High Contracting Parties.
2. Each of the High Contracting Parties may, however, retain, build or acquire a maximum number of three submarines of a standard displacement not exceeding 2,800 tons (2,845 metric tons); these submarines may carry guns not above 6.1-inch (155 mm.) calibre. Within this number, France may retain one unit, already launched, of 2,880 tons (2,926 metric tons), with guns the calibre of which is 8 inches (203 mm.).
3. The High Contracting Parties may retain the submarines which they possessed on the 1st April, 1930, having a standard displacement not in excess of 2,000 tons (2,032 metric tons) and armed with guns above 5.1-inch (130 mm.) calibre.
4. As from the coming into force of the present Treaty in respect of all the High Contracting Parties, no submarine the standard displacement of which exceeds 2,000 tons (2,032 metric tons) or with a gun above 5.1-inch (130 mm.) calibre shall be constructed within the jurisdiction of any of the High Contracting Parties, except as provided in paragraph 2 of this Article.
