Unity was leaving Blyth on 29 April 1940 for a patrol off Norway when she collided with a Norwegian vessel. The submarine sank about five minutes later. A lieutenant and an able seaman remained in the flooding control room. They gave their lives while helping their shipmates escape.
Chapter · 6:24:58-6:25:35
Unity: a collision and sacrifice in the control room
Unity sank within minutes of a collision while leaving for a Norway patrol, as two men stayed behind so shipmates could escape.