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History
USS F-2 (SS-21)
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USS F-2 (SS-21) was an F-class submarine built for the United States Navy during the 1910s.
USS F-2 underway in San Diego harbor, California
USS F-2 underway in San Diego harbor, California
Image: US Navy F Class Plans 1 1910
Image: US Navy F Class Plans 1 1910
Image: US Navy F Class Plans 2 1910
Image: US Navy F Class Plans 2 1910
United States F-class submarine
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The F-class submarines were a group of four submarines designed for the United States Navy by Electric Boat in 1909. F-1 and F-2 were built by Union Iron Works in San Francisco, while F-3 and F-4 were built by The Moran Company in Seattle, Washington.
These boats are (from front to back): F-4, F-2, F-3, and F-1. Note the "fish" flags and 13-star "boat" ensigns flown by these submarines.
These boats are (from front to back): F-4, F-2, F-3, and F-1. Note the "fish" flags and 13-star "boat" ensigns flown by these submarines.