related topics
{ship, engine, design}
{war, force, army}
{law, state, case}
{language, word, form}
{company, market, business}
{work, book, publish}
{son, year, death}
{land, century, early}

U-boat is the anglicized version of the German word U-Boot [ˈuːboːt]  ( listen), itself an abbreviation of Unterseeboot (undersea boat), and refers to military submarines operated by Germany, particularly in World War I and World War II. Although in theory U-boats could have been useful fleet weapons against enemy naval warships, in practice they were most effectively used in an economic warfare role (commerce raiding), enforcing a naval blockade against enemy shipping. The primary targets of the U-boat campaigns in both wars were the merchant convoys bringing supplies from the British Empire and the United States to the islands of Great Britain. Austrian submarines of World War I were also known as U-boats.

The distinction between U-boat and submarine is common in English-language usage (where U-boat refers exclusively to the German vessels of the World Wars) but is unknown in German, in which the term U-Boot refers to any submarine.


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