Edward Michaud discovers German Type XIB U-Boat off Cape Cod - Project CA35 (1998). Tony Gosling, Edward Michaud.

Hitler's secret escape sub Type XIB sunk off Cape Cod on 25th August 1944 while attempting to negotiate early end to WWII en route to Argentina
Apologies for the somewhat sloppy interview technique here but I think you'll agree the historic content makes it all worthwhile.