Statement of Significance (as of designation - April 27, 1992):
Built in 1938, FIR is the last surviving unaltered American lighthouse tender. FIR spent her active career transporting lighthouse keepers, bringing them supplies, mail, and fuel, as well as servicing lightships, moving buoys, and participating in search and rescue efforts. When decommissioned in October 1991, this essentially unmodified vessel was the last working member of the U.S. Lighthouse Service fleet. Fir represents a largely unheralded workaday aspect of the U.S. Lighthouse Service, as well as the seafaring foundation from which the modern Coast Guard's Buoy tender fleet evolved.