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Historical Document

Washington Naval Treaty

Also Known As Five-Power Treaty
Modern International Agreements and Pacts

The Washington Naval Treaty, also known as the Five-Power Treaty, was signed in 1922 among the major Allied powers of World War I to prevent a naval arms race by limiting warship construction. It was negotiated at the Washington Naval Conference held in Washington, D.C. from November 1921 to February 1922, and was signed by the governments of the British Empire, the United States, France, Italy and Japan. The treaty limited the construction of battleships, battlecruisers and aircraft carriers by its signatories, though other categories of warships, such as cruisers, destroyers and submarines, were left unlimited except for a 10,000 ton displacement cap on each individual ship.

Facts
Document Type
Treaty 1
Creation Year
1922 1
Origin Place
Washington, D.C., United States 1
Original Language
English and French 1
Classification
Medium or Support
Paper 1
Document Type
Document Type (category)
Treaty 1
FAQs

What ratio of warship tonnage did the Washington Naval Treaty set for each country?

The United States and United Kingdom got 500,000 tons each, Japan 300,000, and France and Italy 175,000 each.

The Five-Power Treaty was signed by the United States, the United Kingdom, Japan, France and Italy and was the cornerstone of the naval disarmament program. It allowed the United States and the United Kingdom 500,000 tons of warships, Japan 300,000 tons, and France and Italy each 175,000 tons. Japan had preferred a 10:10:7 ratio, while the US Navy had preferred 10:10:5, and the conference ultimately adopted the 5:5:3 ratio limits. Because the United States and the United Kingdom kept navies in both the Pacific and Atlantic oceans to support their colonial territories, they were given the highest tonnage allowances.
Connections

In Era

The Late Modern Period, Eras
Source Washington Naval Treaty - Wikipedia
In the Other Atlases

Same As

Washington Naval Treaty

Also in Law Atlas: the same subject.

Used In

English

Also in Language Atlas: which uses this subject.

French

Also in Language Atlas: which uses this subject.

Originated In

North America

Also in Geography Atlas: where this subject originated.

United States

Also in Geography Atlas: where this subject originated.

Source Wikidata: Washington Naval Treaty
Sources
1. Washington Naval Treaty - Wikipedia
  • Lead paragraph, sentence 1 (treaty identification)
    The Washington Naval Treaty, also known as the Five-Power Treaty, was signed during 1922
  • Lead paragraph, sentence 1 (signing year)
    The Washington Naval Treaty, also known as the Five-Power Treaty, was signed during 1922
  • Lead paragraph, sentence 2 (negotiation site)
    It was negotiated at the Washington Naval Conference in Washington, D.C.
  • Infobox, Languages field
    Languages: French English
  • Lead paragraph, sentence 1 (alternate name)
    The Washington Naval Treaty, also known as the Five-Power Treaty, was signed during 1922
  • Wikipedia lead paragraph, document type/medium described (w-bbfill-history3-0927)
  • In Era: The Late Modern Period, lead paragraph and infobox, date
    The treaty was finalized on February 6, 1922.
  • In Group: International Agreements and Pacts of the World Wars Era, 1914 to 1945, Lead
    The Washington Naval Treaty, also known as the Five-Power Treaty, was signed during 1922 among the major Allies of World War I, which agreed to prevent an arms race by limiting naval construction.
View the Source
Wikidata: Washington Naval Treaty
Wikidata Q696550, class allow-list match (w-wdresolver-0926)View the Source
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