Submarine of the German navy/Deutsche Marine now serving as a museum ship.

U11 was built by Howaldtswerke-Deutsche Werft (HDW), Kiel, Germany. Commissioned on June 21st 1968 and decommissioned on October 30th 2003.

U-11 was transformed to a Type 205A double-hulled boat (the outer hull filled with polystyrene foam to make it unsinkable) and used as torpedo target.