Following the First World War, the tide of public opinion was overwhelmingly against the submarine as a weapon of war. The excesses of the German U-boat had stunned the sensibilities of the world but had, nonetheless, presented new ideas and possibilities of this weapon to the various naval powers of the time, The momentum of these new ideas proved so strong that by the opening of the first major international disarmament conference of the 20th century, practical uses of the submarine had all but smothered the moral indignation of 1918.
Douglas, Lawrence H.
"The Submarine and The Washington Conference of 1921,"
Naval War College Review: Vol. 27:
2, Article 9.
Available at: https://digital-commons.usnwc.edu/nwc-review/vol27/iss2/9