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.
Point Judith Light is located on the west side of the entrance to Narragansett Bay, Rhode Island as well as the north side of the eastern entrance to Block Island Sound. The confluence of two waterways make this area busy with water traffic and the waters around Point Judith are very cold and dangerous. Historically, even with active lighthouses, there have been many shipwrecks off these coasts.
Nobska Light, originally called Nobsque Light, also known as Nobska Point Light is a lighthouse located near the division between Buzzards Bay, Nantucket Sound, and Vineyard Sound in the settlement of Woods Hole, Massachusetts on the southwestern tip of Cape Cod, Massachusetts. It overlooks Martha's Vineyard and Nonamesset Island. The light station was established in 1828, with the tower protruding above the keeper's house, and was replaced in 1876 by the current 42 foot tall iron tower. The light station was added to the National Register of Historic Places as Nobska Point Light Station in 1987.
The St. Johns Light is an active lighthouse in Jacksonville, Florida, marking the mouth of the St. Johns River. Built in 1954, it is located on Naval Station Mayport in the Mayport area. It was erected to replace a lightship, which itself replaced the still-standing Old St. Johns River Light. It is the fourth lighthouse built at the mouth of the St. Johns since 1830. It was listed on the National Register of Historic Places in 2018.
A Texas Tower lighthouse is a structure which is similar to an off-shore oil platform. Seven of these structures were built in the 1960s off the shores of the United States. Automation started in the late 1970s, which led to the obsolescence of the housing built for the keepers which resulted in such a large structure. Three of the towers were dismantled over time due to deteriorating structural conditions among other problems, while another one was destroyed in a ship collision. The last Texas Tower was deactivated in 2016 having served for over half a century. Today only three of the former lights remain.
Eagle Harbor Light is an operational lighthouse at Eagle Harbor, in Keweenaw County in the state of Michigan. It sits on the rocky entrance to Eagle Harbor and is one of several light stations that guide mariners on Lake Superior across the northern edge of the Keweenaw Peninsula. The original lighthouse, built in 1851, was replaced in 1871 by the present red brick structure, which is a Michigan State Historic Site and listed on the National Register of Historic Places.
Charleston Light, also known as Sullivan's Island Lighthouse, is located on Sullivan's Island, South Carolina, which is the northern entrance to Charleston Harbor. Designed by Thomas Sullivan. The lighthouse was erected to replace the defunct Morris Island Light on Morris Island, which was at risk of being destroyed by erosion, but which remains standing and was stabilized in 2010. Construction of the Charleston Light was started in 1960, and it was first lit on June 15, 1962.
Solomons Lump Light is a lighthouse in the Chesapeake Bay, the abbreviated remains of a caisson light built in 1895. That structure replaced a screw-pile light built on the same spot in 1875, which in turn superseded the Fog Point Light.
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.
Edgartown Harbor Light is a lighthouse located in Edgartown, Massachusetts, United States, where it marks the entrance to Edgartown Harbor and Katama Bay. It is one of five lighthouses on the island of Martha's Vineyard. The first lighthouse, a two-story wooden structure that also served as the keeper's house, was constructed in 1828. It was demolished, and replaced by the current cast-iron tower, in 1939. Originally located on an artificial island 1/4 miles from shore, the lighthouse is now surrounded by a beach formed, since 1939, by sand accumulating around the stone causeway connecting it to the mainland.
Chesapeake Light is an offshore lighthouse marking the entrance to the Chesapeake Bay. The structure was first marked with a lightship in the 1930s, and was later replaced by a "Texas Tower" in 1965. The lighthouse was eventually automated and was used for supporting atmospheric measurement sites for NASA and NOAA. Due to deteriorating structural conditions, the lighthouse was deactivated in 2016. At the time, it was the last remaining "Texas Tower" still in use due to obsolescence.
Plymouth Light, also known as Gurnet Light, is a historic lighthouse located on Gurnet Point at the entrance to Plymouth Bay in the town of Plymouth, Massachusetts. The light is accessible only by passing through the town of Duxbury, which lies to the north. The tower is located inside the earthworks of Fort Andrew, which existed in the Civil War, War of 1812, and Revolutionary War.
The Tarpaulin Cove Light is a historic lighthouse on Naushon Island, one of the Elizabeth Islands of southern Massachusetts. It is located in the town of Gosnold, Massachusetts. Built on the site of a light station first established privately in the 18th century, the current tower dates from 1891. A keeper's house built at the same time has not survived. The light is 78 feet (24 m) above Mean High Water, and its white light is visible for 9 nautical miles.
Borden Flats Light is a historic lighthouse on the Taunton River in Fall River, Massachusetts, US. It is a tower-on-caisson type known as a sparkplug lighthouse.
Bird Island Light is a historic lighthouse at the entrance to Sippican Harbor in Marion, Massachusetts. Built in 1819, its tower is a well-preserved example of an early 19th-century masonry lighthouse. The tower and the island on which it stands were added to the National Register of Historic Places as Bird Island Light on September 28, 1987.
Deer Island Light is a lighthouse in Boston Harbor, Boston, Massachusetts. The actual light is 53 feet (16 m) above Mean High Water. Its alternating white and red light is visible for 9 nautical miles.
Dumpling Rocks Light is a light on a skeleton tower on Dumpling Rock, Buzzards Bay, Massachusetts. It replaced the wooden Dumpling Rock Light, built 1889, which in turn replaced the original stone lighthouse established in 1829.
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.
