Hitler's Killer Subs
- Episode aired Jun 22, 2016
- 43m
U-boat innovations that were advanced well beyond any other submarine designs of WW2, including the Walter propulsion system, the Type XVII the Type XXI.U-boat innovations that were advanced well beyond any other submarine designs of WW2, including the Walter propulsion system, the Type XVII the Type XXI.U-boat innovations that were advanced well beyond any other submarine designs of WW2, including the Walter propulsion system, the Type XVII the Type XXI.