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The first U-boats were built by Germany in 1904 for sale to the Russians during their war with Japan in 1904 (Russo-Japanese War 1904-1905).

The first submarine is a toss up between Great Britain and the US. America states that it built the first sub; Bushnell's Turtle in 1776 during the Revolutionary War. The US also accepts credit for sinking the first vessel in combat with the sub CSS Hunley during the US Civil War.

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15y ago

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