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This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
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This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-05-07 and was most recently seen on 2026-05-07.
The AA-1 class was a class of three experimental submarines of the United States Navy, built toward the end of World War I, between 1916 and 1920, intended to produce a high-speed fleet submarine. The design was not a success and the submarines saw only limited active service. However, the lessons learned were applied to the design of the later V-boats. The class was later renamed as the T-class.
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