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U-boat

U-boat

17 8.7
A German military submarine from World War I and World War II
  • noun
  • /ˈjuːˌboʊt/
translation icon : submarino alemán
  • During World War I, German U-boats were known for their stealth in sinking enemy ships.
  • German U-boat
  • U-boat crew
  • U-boat commander

Examples

  • A volley of U-boat torpedoes ended his life along with 90 other men.

    Blog text (4)
  • All those U-boats are only 20, 30 minutes away.

  • The U-boats know exactly where and when to strike.

  • By the end of September, Germany had twelve U-boats in its fleet and another sixteen under construction.

    Academic text (1999)
  • To neutralize the German U-boats in the North Atlantic.

  • My great-grandfather, A.C. Troeleman, was the captain of the S.S. Arundo when it was torpedoed by a German U-boat.

    Blog text (31)
  • During the war, U-boats patrolled here, and the wreck of one, full of the dead, washed onto the rocks north of La Galite and stayed through four tides before the waves reclaimed it.

    Fiction book (2002)
  • By 1941, the German navy had deployed over a hundred U-boats in the Atlantic Ocean.

  • The wreck of a German U-boat was discovered off the coast of Ireland in 2018.

Synonyms

submarine
vsU-boat
191 4.2

A warship that travels underwater and carries torpedoes

is the German wartime example rather than the general underwater warship
sub
vsU-boat
  • Informal
133 5.8

A ship that travels under water, often used by the navy

is the German military type used especially during the First and Second World Wars
attack submarine
vsU-boat
  • Specialized
2 5.5

A military ship that travels under water to find and destroy enemy ships

is the German wartime type rather than a role-specific modern vessel
pigboat
vsU-boat
  • Archaic
9.9

A small early submarine used in war and often armed with torpedoes

is the German military model used specifically during the First and Second World Wars

Surface Forms

U-boat singular
U-boats plural

Morphology

U-boat = boat + U (semi-transparent) = U + boat + U

The element 'boat' is transparent, but 'U' is an initialism (from German Unterseeboot) and is not obviously meaningful to an average learner, so the overall meaning is only partly deducible.

Etymology

U-boat comes from the German word Unterseeboot, which means 'under-sea-boat' and is shortened to 'U'. So, a U-boat is literally a boat that goes under the sea and is used for German military submarines, especially in the world wars.