The German torpedo boat T20 was one of nine Type 37 torpedo boats built for the Kriegsmarine during World War II. Completed in mid-1942, she was transferred to Norway in March 1943 for escort duties. The ship returned to Germany in October and was assigned to the Torpedo School. T20 returned to active duty a year later and supported German forces operating in the Baltic Sea. She was then assigned escort duties in the Skagerrak around the beginning of 1945, which included covering minelaying missions. The ship was allocated to the British after the war, but she was transferred to France in 1946. Unused by the French Navy, she was stricken from the Navy List in 1951 and subsequently scrapped.

The Type 37 torpedo boat was a class of nine torpedo boats built for Nazi Germany's Kriegsmarine during World War II. Completed in 1941–1942, one boat helped to escort a commerce raider passing through the English Channel into the Atlantic Ocean in late 1941, but their first major action was in early 1942 when they formed part of the escort for a pair of battleships and a heavy cruiser through the Channel back to Germany in the Channel Dash. Two pairs of boats were sent to France at different times in mid-1942 and were part of the escort during an unsuccessful attempt to pass a different commerce raider back through the Channel in October. One boat was assigned to the Torpedo School as a training ship in mid-1942 and the others followed in the next year.