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 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.
Reedy Island is a small island in the middle of the channel of the Delaware River near its mouth on the Delaware Bay in the U.S. state of Delaware. It is located approximately one mile (1.6 km) east of Port Penn, Delaware and five miles (8.0 km) southwest of Salem, New Jersey.
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.
The American Shoal Light is located east of the Saddlebunch Keys, just offshore from Sugarloaf Key, close to Looe Key, in Florida, United States. It was completed in 1880, and first lit on July 15, 1880. The structure was built to the same plan and dimensions as the Fowey Rocks lighthouse, completed in 1878.
The Crooked River Light, also known as the Carrabelle Light, was built in 1895 to replace the Dog Island Light on Dog Island, which had been destroyed in 1875 by a hurricane. The location on the mainland allowed the light to serve as the rear range light for the channel to the west of Dog Island, used by ships in the lumber trade.
The Gasparilla Island Lights are on Gasparilla Island in Boca Grande, Florida. The Port Boca Grande Lighthouse is on the southern tip of Gasparilla Island, and marked the Boca Grande Pass entrance to Charlotte Harbor.
The Delaware Breakwater East End Light is a lighthouse located on the inner Delaware Breakwater in the Delaware Bay, just off the coast of Cape Henlopen and the town of Lewes, Delaware.
Los Angeles Harbor Light, also known as Angels Gate Light, is a lighthouse in California, United States, at San Pedro Breakwater in Los Angeles Harbor, California. The lighthouse is listed on the National Register of Historic Places. It is listed as Los Angeles Light in the USCG Lights list. It is the only lighthouse in the world that emits an emerald-colored light.
Stratford Shoal Light, officially Stratford Shoal Light, is a lighthouse on a shoal in the middle of Long Island Sound approximately halfway between Port Jefferson, New York and Bridgeport, Connecticut.
The Baker Shoal Range Front Light was a lighthouse in Delaware, United States, on the Delaware River at Port Penn.
Bellevue Range Rear Lighthouse is a lighthouse in Delaware, United States, on the mouth of the Christina River on the Delaware River, Wilmington, Delaware
Cherry Island Range Rear Light is a lighthouse in Wilmington, Delaware, United States, on the Delaware River, just north of the Christina River, Delaware. It is 1,456 yards (1,331 m) behind Cherry Island Range Front Light. The present light is a skeletal tower supporting a red light.
The New Castle Range Rear Light is a lighthouse in Delaware, United States, on the Delaware River near New Castle, Delaware.
Reedy Island Range Rear Lighthouse is a skeletal tower lighthouse near Taylor's Bridge, Delaware. The tower is an active aid to navigation.
Sandy Point Shoal Light is a brick three story lighthouse on a caisson foundation that was erected in 1883. It lies about 0.6 mi (0.97 km) off Sandy Point, north of the Chesapeake Bay Bridge, from whose westbound span it is readily visible.
The Miah Maull Shoal Light is a lighthouse on the north side of the ship channel in Delaware Bay, off of Cumberland County, New Jersey on the East Coast of the United States, southwest of the mouth of the Maurice River.
The Tinicum Island Rear Range Light is a lighthouse located in the Billingsport section of Paulsboro in Gloucester County, New Jersey, the rear of a pair of range lights marking a section of the channel in the Delaware River south of Philadelphia, Pennsylvania. The lighthouse, surrounded by ball fields next to the new marine terminal for the Port of Paulsboro, is still active for navigation on the Delaware River. It works in conjunction with the Tinicum Front Range Light, known as the Billingsport Front Light, situated on the banks of the Delaware River at the front of Fort Billings Park next to the Paulsboro Refinery.
The Peche Island Rear Range Light was a historic lighthouse "off Peche Island in the entrance to the Detroit River from Lake St. Clair." Located in American waters just north of the border to Canada it was moved to Marine City, Michigan upon its deactivation.
