Rockland Harbor Breakwater Light stands at the seaward end of the Rockland Breakwater in Maine and remains an active aid to navigation. It was established in 1902 after years of efforts to protect Rockland’s storm-exposed harbor, long valued as a refuge but vulnerable to northeast weather. Following destructive storms in the 1850s, the federal government funded a granite breakwater that the United States Army Corps of Engineers built between 1880 and 1900, extending more than 4,000 feet. The present light replaced earlier harbor beacons at Jameson Point, was automated in 1964, and has been maintained through Coast Guard oversight, local ownership, and volunteer care.