The President of the United States of America, His Majesty the King of Great Britain, Ireland and the British Dominions beyond the Seas, Emperor of India, and His Majesty the Emperor of Japan, have agreed as between themselves to the provisions of this Part III:

ARTICLE 14.

The naval combatant vessels of the United States, the British Commonwealth of Nations and Japan, other than capital ships, aircraft carriers and all vessels exempt from limitation under Article 8, shall be limited during the term of the present Treaty as provided in this Part III, and, in the case of special vessels, as provided in Article 12.

ARTICLE 15.

For the purpose of this Part III the definition of the cruiser and destroyer categories shall be as follows:

Cruisers.

Surface vessels of war, other than capital ships or aircraft carriers, the standard displacement of which exceeds 1,850 tons (1,880 metric tons), or with a gun above 5.1 inch (130 mm.) calibre.

The cruiser category is divided into two sub-categories, as follows:

(a) cruisers carrying a gun above 6.1-inch (155 mm.) calibre; (b) cruisers carrying a gun not above 6.1-inch (155 mm.) calibre.

Destroyers.

Surface vessels of war the standard displacement of which does not exceed 1,850 tons (1,880 metric tons), and with a gun not above 5.1-inch (130 mm.) calibre.

ARTICLE 16.

1. The completed tonnage in the cruiser, destroyer and submarine categories which is not to be exceeded on the 31st December, 1936, is given in the following table:

2. Vessels which cause the total tonnage in any category to exceed the figures given in the foregoing table shall be disposed of gradually during the period ending on the 31st December, 1936.

3. The maximum number of cruisers of sub-category (a) shall be as follows: for the United States, eighteen; for the British Commonwealth of Nations, fifteen; for Japan, twelve.

4. In the destroyer category not more than sixteen per cent. of the allowed total tonnage shall be employed in vessels of over 1,500 tons (1,524 metric tons) standard displacement. Destroyers completed or under construction on the 1st April, 1930, in excess of this percentage may be retained, but no other destroyers exceeding 1,500 tons (1,524 metric tons) standard displacement shall be constructed or acquired until a reduction to such sixteen per cent. has been effected. 5. Not more than twenty-five per cent. of the allowed total tonnage in the cruiser category may be fitted with a landing-on platform or deck for aircraft.

6. It is understood that the submarines referred to in paragraphs 2 and 3 of Article 7 will be counted as part of the total submarine tonnage of the High Contracting Party concerned.

7. The tonnage of any vessels retained under Article 13 or disposed of in accordance with Annex II to Part II of the present Treaty shall not be included in the tonnage subject to limitation.

ARTICLE 17.

A transfer not exceeding ten per cent. of the allowed total tonnage of the category or sub-category into which the transfer is to be made shall be permitted between cruisers of sub-category (b) and destroyers.

ARTICLE 18.

The United States contemplates the completion by 1935 of fifteen cruisers of sub-category (a) of an aggregate tonnage of 150,000 tons (152,400 metric tons). For each of the three remaining cruisers of sub-category (a) which it is entitled to construct the United States may elect to substitute 15,166 tons (15,409 metric tons) of cruisers of sub-category (b). In case the United States shall construct one or

more of such three remaining cruisers of sub-category (a), the sixteenth unit will not be laid down before 1933 and will not be completed before 1936; the seventeenth will not be laid down before 1934 and will not be completed before 1937; the eighteenth will not be laid down before 1935 and will not be completed before 1938.

ARTICLE 19.

Except as provided in Article 20, the tonnage laid down in any category subject to limitation in accordance with Article 16 shall not exceed the amount necessary to reach the maximum allowed tonnage of the category, or to replace vessels that become "overage" before the 31st December, 1936. Nevertheless, replacement tonnage may be laid down for cruisers and submarines that become "overage" in 1937, 1938 and 1939, and for destroyers that become "overage" in 1937 and 1938.

ARTICLE 20.

Notwithstanding the rules for replacement contained in Annex I to Part II:

(a) The "Frobisher" and "Effingham" (United Kingdom) may be disposed of during the year 1936. Apart from the cruisers under construction on the 1st April, 1930, the total replacement tonnage of cruisers to be completed, in the case of the British Commonwealth of Nations, prior to the 31st December, 1936, shall not exceed 91,000 tons (92,456 metric tons).

(b) Japan may replace the "Tama" by new construction to be completed during the year 1936.

(c) In addition to replacing destroyers becoming "over-age" before the 31st December, 1936, Japan may lay down, in each of the years 1935 and 1936, not more than 5,200 tons (5,283 metric tons) to replace part of the vessels that become "over-age" in 1938 and 1939.

(d) Japan may anticipate replacement during the term of the present Treaty by laying down not more than 19,200 tons (19,507 metric tons) of submarine tonnage, of which not more than 12,000 tons (12,192 metric tons) shall be completed by the 31st December, 1936.

ARTICLE 21.

If, during the term of the present Treaty, the requirements of the national security of any High Contracting Party in respect of vessels of war limited by Part III of the present Treaty are in the opinion of that Party materially affected by new construction of any Power other than those who have joined in Part III of this Treaty, that High Contracting Party will notify the other Parties to Part III as to the increase required to be made in its own tonnages within one or more of the categories of such vessels of war, specifying particularly the proposed increases and the reasons therefor, and shall be entitled to make such increase. Thereupon the other Parties to Part III of this Treaty shall be entitled to make a proportionate increase in the category or categories specified; and the said other Parties shall promptly advise with each other through diplomatic channels as to the situation this presented.

PART IV.

ARTICLE 22.

The following are accepted as established rules of International Law:

(1) In their action with regard to merchant ships, submarines must conform to the rules of International Law to which surface vessels are subject.

(2) In particular, except in the case of persistent refusal to stop on being duly summoned, or of active resistance to visit or search, a warship, whether surface vessel or submarine, may not sink or render incapable of navigation a merchant vessel without having first placed passengers, crew and ship's papers in a place of safety. For this purpose the ship's boats are not regarded as a place of safety unless the safety of the passengers and crew is assured, in the existing ses and weather conditions, by the proximity of land, or the presence of another vessel which is in a position to take them on board.

The High Contracting Parties invite all other Powers to express their assent to the above rules.

PART V.

ARTICLE 23.

The present Treaty shall remain in force until the 31st December, 1936, subject to the following exceptions:

(1) Part IV shall remain in force without limit of time;

(2) the provisions of Article 3, 4 and 5, and of Article 11 and Annex II to Part II so far as they relate to aircraft carriers, shall remain in force for the same period as the Washington Treaty.

Unless the High Contracting Parties should agree otherwise by reason of a more general agreement limiting naval armaments, to which they all become parties, they shall meet in conference in 1935 to frame a new treaty to replace and to carry out the purposes of the present Treaty, it being understood that none of the provisions of the present Treaty shall prejudice the attitude of any of the High Contracting Parties at the conference agreed to.

ARTICLE 24.

1. The present Treaty shall be ratified by the High Contracting Parties in accordance with their respective constitutional methods and the ratifications shall be deposited at London as soon as possible. Certified copies of all the procès-verbaux of the deposit of ratifications will be transmitted to the Governments of all the High Contracting Parties.

2. As soon as the ratifications of the United States of America. of His Majesty the King of Great Britain, Ireland and the British Dominions beyond the Seas, Emperor of India, in respect of each and all of the Members of the British Commonwealth of Nations as enumerated in the preamble of the present Treaty, and of His Majesty the Emperor of Japan have been deposited, the Treaty shall come into force in respect of the said High Contracting Parties.