Gerda III is a lighthouse tender located at Mystic Seaport in Mystic, Connecticut, United States. Gerda III was built in 1928 in Denmark and was used as a common work boat. In 1943 Gerda III was used to smuggle Jews from Nazi occupied Denmark to Sweden. Approximately 300 Jews were rescued by Greda III. The Danish Parliament donated Gerda III to The Museum of Jewish Heritage in New York City. Mystic Seaport now cares for the vessel and features her as part of their collection of watercraft.