The canal was originally designed to accommodate 32-gun Royal Navy frigates, but by the time it opened, steam-powered iron ships had outgrown it and Napoleon had been defeated — removing two of its main justifications. Commercially, it never quite lived up to expectations. However, it found new life as a tourist attraction — Queen Victoria sailed through in 1873, boosting visitor numbers enormously. During World War I, Muirtown Basin served as "U.S. Naval Base 18," handling components for mine construction shipped from America. Today the canal is a scheduled ancient monument, managed by Scottish Canals, and attracts over 500,000 visitors a year for boating, walking, and cycling along its towpaths.