Daymark

Scharhörn daymark as an illustration on a 1721 map

A daymark or a day marker is the daytime identifier (attached signboard) of an aid to navigation (ATON) or daybeacon.[1]

Generally, the daymark conveys to the mariner during daylight hours the same significance as does the aid's light or reflector at night.[2]

Daymark chart symbols

[3]

Paper Chart Simplified Simplified Symbol Name
Square or rectangular daymark
Triangular daymark, point up
Triangular daymark, point down
Retro reflector

See also

References

  1. "Nautical Terms for boating and marine industry terminology". www.marineinstitute.org. Retrieved 2017-03-08.
  2. Light List, Volume II, Atlantic Coast. Washington, DC: US Government Printing Office. 2015. pp. ix.
  3. 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.


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