A lightvessel, or lightship, is a ship that acts as a lighthouse. They are used in waters that are too deep or otherwise unsuitable for lighthouse construction. Although some records exist of fire beacons being placed on ships in Roman times, the first modern lightvessel was off the Nore sandbank at the mouth of the River Thames in London, England, placed there by its inventor Robert Hamblin in 1734. The type has become largely obsolete; lighthouses replaced some stations as the construction techniques for lighthouses advanced, while large, automated buoys replaced others.
United States lightship Chesapeake (LS-116/WAL-538/WLV-538) is a museum ship owned by the National Park Service and on a 25-year loan to Baltimore City, and is operated by Historic Ships in Baltimore Museum in Baltimore, Maryland. A National Historic Landmark, she is one of a small number of preserved lightships. Since 1820, several lightships have served at the Chesapeake lightship station and have been called Chesapeake. Lightships were initially lettered in the early 1800s, but then numbered as they were often moved from one light station to another. The name painted on the side of lightships was the short name of the Light Station they were assigned to and was the daytime visual aspect of the many Aids to Navigation on board lightships. The United States Coast Guard assigned new hull numbers to all lightships still in service in April 1950. After that date, Light Ship 116 was then known by the new Coast Guard Hull number: WAL-538. In January 1965 the Coast Guard further modified all lightship hull designations from WAL to WLV, so Chesapeake became WLV-538.
The United States lightship Huron (LV-103) is a lightvessel that was launched in 1920. She is now a museum ship moored in Pine Grove Park, Port Huron, St. Clair County, Michigan.
United States lightship Columbia (WLV-604) is a lightship located in Astoria, Oregon, United States of America. Columbia was formerly moored near the mouth of the Columbia River.
Ambrose Light, often called Ambrose Tower, was the light station at the convergence of several major shipping lanes in Lower New York Bay, including Ambrose Channel, the primary passage for ships entering and departing the Port of New York and New Jersey.
United States Lightship 101, now known as Portsmouth as a museum ship, was first stationed at Cape Charles, Virginia. Today she is at the Portsmouth Naval Shipyard Museum in Portsmouth, Virginia. Portsmouth never had a lightship station; however, when the vessel was dry docked there as a museum, she took on the pseudonym Portsmouth. A National Historic Landmark, she is one of a small number of surviving lightships.
United States lightship Nantucket (LV-112) is a National Historic Landmark lightship that served at the Lightship Nantucket position. She was the last serving lightship and at time of its application as a landmark, one of only two capable of moving under their own power. She served as the lightship for such notable vessels as the liners United States, Queen Mary, and Normandie.
Frying Pan (LV-115) is a lightvessel moored at Pier 66a in the Chelsea neighborhood of Manhattan in New York City. It served at Frying Pan Shoals, off Cape Fear in North Carolina, for over 30 years.
United States lightship Relief (WLV-605) is a lightvessel now serving as a museum ship in Oakland, California. Built in 1950, she is one of a small number of surviving lightships, and one of an even smaller number built specifically for the United States Coast Guard. Along with her sister ship, the WLV-604 Columbia, she is a good example of the last generation of lightships built. She was declared a National Historic Landmark in 1989.
Lightship No. 114, later U.S. Coast Guard WAL 536, that served as lightship Fire Island (NY), Examination Vessel, Diamond Shoal (NC), 1st District relief vessel, Pollock Rip (MA) and Portland (ME). After decommissioning in 1971, in 1975 the lightship became a historic ship at the State Pier in New Bedford, Massachusetts. She received little maintenance, and eventually sank at her moorings in 2006 and was sold for scrap the next year.
Lightship Overfalls (LV-118) was the last lightvessel constructed for the United States Lighthouse Service before the Service became part of the United States Coast Guard. She is currently preserved in Lewes, Delaware as a museum ship.
The United States Lightship WLV-613 was a lightvessel commissioned in 1952 that became the last lightship to mark the Ambrose Channel. She was replaced by a Texas Tower lightstation on 24 August 1967.
The United States Lightship LV-87/WAL-512 (Ambrose) is a riveted steel lightship built in 1907 and served at the Ambrose Channel lightship station from December 1, 1908, until 1932, and in other posts until her decommissioning in 1966. It is one of a small number of preserved American lightships, and now serves as a museum ship at the South Street Seaport Museum in southern Manhattan, New York City.
Diamond Shoal Lightship No. 71 (LV-71) was a lightship of the United States Lighthouse Service. She is most remembered for her sinking in 1918 during World War I when a German U-boat attacked her off North Carolina. Her shipwrecked remains were listed on the National Register of Historic Places in 2015.
The Nantucket Lightship or United States Lightship WLV-612 is a lightvessel commissioned in 1950 that became the last lightship decommissioned in United States Coast Guard service.
The Sandy Hook was a steam pilot boat built in 1902, by Lewis Nixon at the Crescent Shipyard in Elizabeth, New Jersey. In 1914, she was purchased by the New York and New Jersey Sandy Hook Pilots Association to replace the pilot boat New Jersey, that was lost in 1914. She could carry 10 to 12 pilots that would help guide ships through the New York Harbor. The Norwegian America Line Oslofjord, with the Crown Prince Olav of Norway and Princess Märtha of Sweden on board, ran into and sank the Sandy Hook in 1939.
