Built in 1944, the U-1105 was one of 10 or fewer German Type VII-C submarines outfitted with a rubber skin designed to avoid Allied sonar detection.

Four of these eleven boats (U-35, U-39, U-38, and U-34) were the four top killers of World War I; indeed, they were four of the five top submarines of all time in terms of tonnage sunk (the Type ...

University of Notre Dame military history professor Ian Ona Johnson talked about what life was like on German Type VII submarines, and the impact of the U-boat captains.