Type XXI submarine

Type XXI U-boats, also known as "Elektroboote" (German: "electric boat"), were a class of German diesel-electric submarines designed during the Second World War. The submarines were rushed into production prematurely, and all of those built suffered from significant defects. As a result, only four of the submarines were completed during the war, and only two went on combat patrol with no action taken.

Type XXI submarine

Type XXI U-boats, also known as "Elektroboote" (German: "electric boat"), were a class of German diesel-electric submarines designed during the Second World War. The submarines were rushed into production prematurely, and all of those built suffered from significant defects. As a result, only four of the submarines were completed during the war, and only two went on combat patrol with no action taken.