NAPLES, Italy — The U.S. Navy ... unmanned boats to help rescue sailors, a method officials say will limit the risk inherent in many search-and-rescue operations at sea. A commercial, remote ...

The U17 was one of 18 Type 206 U-Boats designed to operate in the shallow Baltic Sea and constructed by Howaldtswerke-Deutsche Werft (HDW) for the Bundesmarine between 1969 and 1975. Though not ...