Photo #: NH 104706 U. S. Navy Wood Harbor Tug Outboard profile of the Harbor Tug No. 46 class (Nos 46 through 85). This plan by the Navy's Bureau of Construction and Repair is dated 25 April 1919 and is signed by the bureau's chief, Naval Constructor David W. Taylor, USN. Its number is C&R No. 60815. These tugs measured 88 feet in length and 20 feet in beam, displaced 215 tons, and had a designed speed of 10 knots. U.S. Naval History and Heritage Command Photograph.