National Geographic - Hitlers American Battleground (2021)

Hitler's American Battleground takes us to the forgotten World War II waters off America's coast as the truth is revealed about the Nazi submarine tactics. The two-hour special follows experts as they chart WWII underwater battlegrounds, revealing the truth about Nazi submarines mercilessly stalking the Atlantic before US forces gained the upper hand.
German U-boats journey from the coast of Lorient, France, across the Atlantic Ocean, with the mission to sink American ships. The United States has just entered the war and are certainly not ready to take on such an enormous battle; The navy can only deploy two of their destroyers at once and must cover 400,000 acres of the ocean to catch the Nazis at sea.
Meanwhile, the German submarines have the upper ground and have found the perfect hunting ground - Cape Hatteras in North Carolina.