Several ships were torpedoed within sight of East Coast cities such as New York and Boston. The only documented World War II sinking of a U-boat close to New England shores occurred on May 5, 1945, when the torpedoed and sank the collier off Newport, Rhode Island. When "Black Point" was hit, the U.S. Navy immediately chased down the sub and began dropping depth charges. In recent years, "U-853" has become a popular dive site. Its intact hull, with open hatches, is located in of water off Block Island, Rhode Island. A wreck discovered in 1991 off the New Jersey coast was concluded in 1997 to be that of . Previously, "U-869" had been thought to have been sunk off Rabat, Morocco.