U-215 under Fritz Hoeckner was sunk 1 day into a New England patrol after sinking Alexander Macomb October 20, 2015March 7, 2017 Updated October 20, 2015by Eric Wiberg
U-566 under Dietrich Borchert patrolled New England intensely for 23 days in May 1942, sank no ships there October 17, 2015March 7, 2017 Updated October 17, 2015by Eric Wiberg