A lighthouse is a tower, building, or other type of structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways.
Leading lights are a pair of light beacons used in navigation to indicate a safe passage for vessels entering a shallow or dangerous channel; they may also be used for position fixing. At night, the lights are a form of leading line that can be used for safe navigation. The beacons consist of two lights that are separated in distance and elevation, so that when they are aligned, with one above the other, they provide a bearing. Range lights are often illuminated day and night.
The Amelia Island North Range Light was built to mark a channel over the sandbar at the mouth of the St. Mary's River, which led to the harbor at Fernandina Beach, Florida, on Amelia Island. It consisted of a lighthouse and a front range tower with a light, arranged so that when ships could see one light above the other, they were lined up with the channel. During the Civil War Confederate forces removed the lenses from the lights. Union forces seized Fernandina Beach, Fort Clinch and the lighthouse in 1862.
Reedy Island Range Rear Lighthouse is a skeletal tower lighthouse near Taylor's Bridge, Delaware. The tower is an active aid to navigation.
The Craighill Channel Lower Range Front Light, named for William Price Craighill, was the first caisson lighthouse built in the Chesapeake Bay in Maryland, USA. First lit in 1873, the range marks the first leg of the maintained Craighill Channel from the Chesapeake Bay at the mouth of the Patapsco River into the Baltimore harbor and works in conjunction with the Craighill Channel Lower Range Rear Light. It has been owned by non-profit organization Historical Place Preservation, Inc. since 2005.
Helen Delich Bentley Port of Baltimore is a shipping port along the tidal basins of the three branches of the Patapsco River in Baltimore, Maryland on the upper northwest shore of the Chesapeake Bay. It is the nation's largest port facilities for specialized cargo and passenger facilities. It is operated by the Maryland Port Administration (MPA), a unit of the Maryland Department of Transportation.
Greenbury Point Light was the name of two lighthouses in the Chesapeake Bay, both located at the mouth of the Severn River in Annapolis, Maryland.
The Craighill Channel Lower Range Rear Light is one of a pair of range lights that marks the first section of the shipping channel into Baltimore harbor. It is the tallest lighthouse in Maryland.
Fort Carroll Light is a derelict lighthouse consisting of a short wooden tower on the walls of its namesake fortifications in the Patapsco River.
The Hawkins Point Light was an unusual screw-pile lighthouse which displayed the front light to the Brewerton Channel Range. It was eventually superseded by an iron tower on the same foundation.
The Craighill Channel Upper Range Rear Light is one of a pair of range lights that marks the second section of the shipping channel into Baltimore harbor.
The Craighill Channel Upper Range Front Light is one of a pair of range lights that marks the second section of the shipping channel into Baltimore harbor.
The North Point Range Lights were some of the earliest lights in the Maryland portion of the Chesapeake Bay. Intended to guide ships headed for Baltimore harbor into the Patapsco River, they were superseded by channel construction in the 1870s and 1980s, and were replaced by the Craighill Channel Upper Range front and rear lights.
The Conover Beacon is a lighthouse in Leonardo section of Middletown Township, Monmouth County, New Jersey, United States, that functioned as the front light of the now-discontinued Chapel Hill Range.
The Grand Island Harbor Rear Range Light is a lighthouse located off M-28 in Munising Township, Michigan. It is also known as the Bay Furnace Rear Range Light, Christmas Rear Range Light, or End of the Road Light. The corresponding front range light was replaced in 1968; the rear range light was listed on the National Register of Historic Places in 1990. It is no longer an active aid to navigation.
Voslapp Rear Range Light is an active lighthouse and range light in Voslapp, state of Lower Saxony, Germany. At a height of 201 feet (61 m) it is the twenty-second tallest "traditional lighthouse" in the world. It is located 4.3 kilometres (2.7 mi) south-southwest of Voslapp Front Range Light, behind the dike at the village of Voslapp, about 8 kilometres (5.0 mi) north of Wilhelmshaven.
Point Cartwright Light is an active lighthouse located on Point Cartwright, a point near the mouth of the Mooloolah River, in Mooloolaba, Queensland, Australia. It marks the entrance to the North West Channel, a deep water channel into Moreton Bay and the Port of Brisbane, and provides guidance into the Mooloolaba Harbour.
