Between 2001 and 2003, nautical archaeologist Innes McCartney discovered and surveyed fourteen of the U-boat wrecks; including the rare Type XXI U-boat U-2506, once under the command of Horst von Schroeter; the successful Type IXC U-boat, commanded by Adolf Piening and U-778, which was the most promising salvage.
Between 2001 and 2003, nautical archaeologist Innes McCartn,ey discovered and surveyed fourteen of the U-boat wrecks; including the rare Type XXI U-boat U-2506 once under the command of Horst von Schroeter; the successful Type IXC U-boat, commanded by Adolf Piening and U-778, which was the most promising salvage.