Claim: USS Blue Light served as an ordnance tug at Boston, Massachusetts until 1870 and alter on became a yard tug at the Washington Navy Yard, the former shipyard and ordnance plant of the United States Navy.
Evidence: Following the collapse of the Confederacy, Blue Light continued to perform duty as an ordnance tug at Boston, Massachusetts, until 1870. From 1871-June 1873, she served as a yard tug at the Washington Navy Yard. The Washington Navy Yard (WNY) is the former shipyard and ordnance plant of the United States Navy in Southeast Washington, D.C. It is the oldest shore establishment of the U.S. Navy.