The German torpedo boat T4 was one of a dozen Type 35 torpedo boats built for the Kriegsmarine (German Navy) during the late 1930s. Completed during World War II in mid-1940, she participated in an abortive attempt to attack several convoys off the Scottish coast in November 1940. The boat was one of the escorts for several commerce raiders passing through the English Channel in 1941 and 1942 and helped to escort a pair of battleships and a heavy cruiser through the Channel back to Germany in the Channel Dash. She was assigned to the Torpedo School in mid-1943 and was then transferred to the Baltic Sea a year later. The boat was allocated to the United States after the war, but she was sold to Denmark a few years later. Unused by the Royal Danish Navy, T4 was scrapped in 1951–1952.