The Type XXI revolutionized submarine design by being engineered to operate primarily underwater rather than on the surface.
A late-war modification utilizing high-tensile steel to increase pressure hull thickness. In-Game Role: Survival-focused late-war predator. Torpedos: 14 total (4 bow tubes, 1 stern tube). silent hunter 3 all submarines
Never store external torpedoes in rough weather (North Atlantic winter). They will freeze and become unusable. Bring them inside before diving. The Type XXI revolutionized submarine design by being
Vanilla SH3 only includes the above. But supermods drastically expand to include: silent hunter 3 all submarines