Misplaced Pages

A daymark is a navigational aid for sailors and pilots, distinctively marked to maximize its visibility in daylight.

The word is also used in a more specific, technical sense to refer to a signboard or daytime identifier that is attached to a day beacon or other aid to navigation. In that sense, a daymark conveys to the mariner during daylight hours the same significance as the aid's light or reflector does at night. Standard signboard shapes are square, triangular, and rectangular, while the standard colours are red, green, orange, yellow, and black.

Notable daymarks

• Trinity House Obelisk, UK
• Kingswear Daymark, UK
• Tasku beacon tower, Finland
• Keskiniemi beacon tower, Finland
• Hiidenniemi beacon tower, Finland
• Laitakari beacon tower, Finland
• Herring Tower, Langness, Isle of Man
• Le Hocq, Jersey
• La Tour Cârrée, Jersey
• Scharhörnbake, Germany

Symbols used on US charts

Chart symbols used by the US National Oceanic and Atmospheric Administration Department, 2013.

Paper chart	Simplified	Simplified symbol name
		Square or rectangular daymark
		Triangular daymark, point up
		Triangular daymark, point down
		Retro reflector

See also

• Landmark
• Lighthouse
• Sea mark

References

1. "daymark". Oxford English Dictionary (Online ed.). Oxford University Press. Retrieved 2021-10-04. (Subscription or participating institution membership required.)
2. ^ "Nautical Terms for boating and marine industry terminology". www.marineinstitute.org. Archived from the original on 2003-12-17. Retrieved 2017-03-08.
3. Light List, Volume II, Atlantic Coast. Washington, DC: US Government Printing Office. 2015. pp. ix.
4. US Chart No. 1: Symbols, Abbreviations and Terms used on Paper and Electronic Navigational Charts. Department of Commerce National Oceanic and Atmospheric Administration Department of Defense National Geospatial-Intelligence Agency. 2013. p. 86.

External links

• The dictionary definition of daymark at Wiktionary

v t e Lighthouses
History of lighthouses Conservation of lighthouses Museums
Types	Construction Aerial Caisson Crib Integral Pile Screw-pile Skeletal tower Vessel (acting) Navigational purpose Daymark Leading lights Sea mark Sector light
Fixtures	Aerobeacon Argand lamp Automatic lamp changer Bird-cage lantern Carcel lamp Dalén light Foghorn Fresnel lens Lens lantern Lewis lamp Light characteristic VRB-25
Maintenance	Keepers Light dues Pharologists Tender
Locations	Africa Antarctica Asia Europe North America Oceania South America
Categories	Lighthouse builders Lighthouses by heritage register Lighthouses by century of completion Lighthouses by year of completion
Global organizations	General lighthouse authority International Association of Lighthouse Authorities International Lighthouse and Lightship Weekend Lighthouse Digest
Category Commons Wiktionary WikiProject

• Daymarks
• Navigational aids