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Washington Naval Treaty

1922 pact by the Allies of WWI / From Wikipedia, the free encyclopedia

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The Washington Naval Treaty, also known as the Five-Power Treaty, was a treaty signed during 1922 among the major Allies of World War I, which agreed to prevent an arms race by limiting naval construction. It was negotiated at the Washington Naval Conference in Washington, D.C. from November 1921 to February 1922 and signed by the governments of the United Kingdom, United States, France, Italy, and Japan. It limited the construction of battleships, battlecruisers and aircraft carriers by the signatories. The numbers of other categories of warships, including cruisers, destroyers, and submarines, were not limited by the treaty, but those ships were limited to 10,000 tons displacement each.

Quick facts: Limitation of Naval Armament, Type, Context, ...
Washington Naval Treaty
Limitation of Naval Armament
Signing of the Washington Naval Treaty (1922).
TypeArms control
ContextWorld War I
SignedFebruary 6, 1922 (1922-02-06)
LocationMemorial Continental Hall, Washington, D.C.
EffectiveAugust 17, 1923 (1923-08-17)
ExpirationDecember 31, 1936 (1936-12-31)
DepositaryLeague of Nations
Citations25 L.N.T.S. 202
Full text
Wikisource-logo.svg Washington Naval Treaty, 1922 at Wikisource

The treaty was concluded on February 6, 1922. Ratifications of that treaty were exchanged in Washington on August 17, 1923, and it was registered in the League of Nations Treaty Series on April 16, 1924.[1]

Later naval arms limitation conferences sought additional limitations of warship building. The terms of the Washington Naval Treaty were modified by the London Naval Treaty of 1930 and the Second London Naval Treaty of 1936. By the mid-1930s, Japan and Italy renounced the treaties, while Germany renounced the Treaty of Versailles which had limited its navy. Naval arms limitation became increasingly difficult for the other signatories.