This 47-minute documentary originally aired as part of the “Sea Tales” series on A&E. It tells a little-known story about a band of young yachtsmen and fishermen who were recruited during World War II to help protect the United States’ East coast from Hitler’s deadly fleet of Nazi U-Boats. 

The sailors were sent out to find and confront the U-Boats equipped only with antique machine guns mounted on wooden recreational sailboats that were put into service so quickly the grey paint was still wet when they left the docks.

Via the National Sailing Hall of Fame