Beacons of Light - Lighthouses of Prince Edward Island Virtual Museum of Canada
Glossary of Lighthouse Terms
Aid to Navigation: A buoy, beacon, lighthouse, lightship or any other structure or device installed, built or maintained for the purpose of assisting the navigation of vessels.

Alternative Use: The non-navigational use of an authentic lighthouse to preserve and generate support for the historic structure. This can also take place in a lighthouse that is still used for navigational purposes.

Automated: A lighthouse that has been changed to operate without the aid of a keeper. A keeper may still be retained for maintenance and security.

Characteristic: The unique visual identity of a lighthouse, including the light exhibited and structural features, which allows mariners to tell one lighthouse from another.

Chariot: The wheeled carriage at the bottom of a Fresnel lens assembly that allows the lens to rotate around a circular iron track atop the lens pedestal.

Crib: A structure, usually of timbers sunk in water through filling with stone, that served as the foundation for a structure built atop it. (sample image)

Daymark: Unique colour, pattern or architecture of towers and other markers to help navigators identify their location during the day. (sample image)

Decommissioned: A lighthouse that no longer functions as a navigational aid. (sample image)

De-staffed: An automated lighthouse without a lightkeeper.

Focal Plane: The height above the water level at which the centre of the light emanates.

Interim Lightkeeper: A lightkeeper who served on a temporary basis, usually between the appointments of full-time lightkeepers.

Lighthouse: Enclosed tower with an enclosed lantern built by a governing authority as an aid to navigation.

Lightstation: Light tower and associated buildings (dwellings, sheds, boathouses, and fog alarms) and the land they occupy.

List Of Lights (LOL): Official government list of navigational aids along the coasts and inland waterways featuring brief descriptions and precise locations.

  Glossary of Lighthouse Terms  
  Styles of Lighthouses  
  Lighthouse Anatomy  
  Lighthouse Technology  
  Light Characteristics  
  Types of Ligthouses  
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