(Battleship # 31) Crew members atop the ship's # 5 (aftermost) twelve-inch gun turret, circa 1918. Annotations on the image identify (from left to right): turret pointer's periscope, fore and main tops on masts (with identities reversed the main mast is the nearer), radio aerials and supporting tripod, and speed cones. Note the triangular baffles mounted on the masts. These were a measure to confuse coincidence rangefinders, which contemporary intelligence erroneously believed were the type used by the German navy. See Photo # NH 105768-A for a reproduction of the original card's reverse, with a message concerning this anti-rangefinding measure. The original image is printed on post card (AZO) stock. Donation of Charles R. Haberlein Jr., 2008. U.S. Naval History and Heritage Command Photograph.