Information on this section
We have a total of 5,102 patrols by 862 U-boats listed here. Of those 3584 were war patrols.
This database consists of 129,059 entries of which 114,115 have full daily positions (lat, long). They are linked from all U-boat patrols, search pages and elsewhere where they can be of assistance. The positions are always shown as a "map" link where you can find details on the patrol in question.
List of all boats with patrol data.
More examples: Patrols of U-99. From that page you can, for example, see the successful 3rd patrol for the boat.
Special thanks to the Libary of Contemporary History in Stuttgart for their invaluable help on this project.