U-Boat Bases and Bunkers: German U-Boat’s greatest danger at port came from air attacks launched from the UK. To combat this, German port defenses consisted of multiple elements including radar detection, fighter defense, Flak guns, barrage balloons, and massive bunkers.
Charles McCain is a Washington DC based freelance journalist and novelist. He is the author of "An Honorable German," a World War Two naval epic. You can read more of his work on his website: http://charlesmccain.com/ View all posts by Charles McCain