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Daymark on St Martin's, Isles of Scilly
Triangular daymark in the marina of Ystad, 2021
Scharhörn daymark in 1898

A daymark is a navigational aid for sailors and pilots, distinctively marked to maximize its visibility in daylight.[1]

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.[2] 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.[3] Standard signboard shapes are square, triangular, and rectangular, and standard colours are red, green, orange, yellow, and black.[2]

Notable daymarks

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Symbols used on US charts

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Chart symbols used by the US National Oceanic and Atmospheric Administration Department, 2013.[4]

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

See also

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References

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  1. ^ "daymark". Oxford English Dictionary (Online ed.). Oxford University Press. Retrieved 2021-10-04. (Subscription or participating institution membership required.)
  2. ^ a b "Nautical Terms for boating and marine industry terminology". www.marineinstitute.org. Archived from the original on 2003-12-17. Retrieved 2026-04-18.
  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.
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  • Wiktionary logo The dictionary definition of daymark at Wiktionary

📚 Artikel Terkait di Wikipedia

Landmark

to support navigation on finding directions. A variant is a seamark or daymark, a structure usually built intentionally to aid sailors navigating featureless

Kingswear Daymark

Kingswear Daymark (also known as The Tower) is a 24 m (80 ft) octagonal limestone day beacon built in 1864, in an arable field above Froward Point near

St Martin's, Isles of Scilly

red-and-white daymark. It was erected in 1683 by Thomas Ekins, first steward of the Godophin Family to live on the islands. The 'Daymark', alongside several

Cape Lookout Lighthouse

is the only such structure in the United States to bear the checkered daymark, intended not only for differentiation between similar light towers, but

Sea mark

navigational purposes. Some are only intended to be visible in daylight (daymarks), others have some combination of lights, reflectors, fog bells, foghorns

Barber's pole

shaft or tower of a lighthouse has been painted with a helical stripe as a daymark, the lighthouse could be described as having been painted in "barber's

Tybee Island Light

single keeper. The beacon was automated in 1972. Throughout its life the daymark of the tower was modified on numerous occasions. Originally all-white,

Lindisfarne

1810, it is said to be Britain's earliest purpose-built daymark.[page needed] Emmanuel Head Daymark Public viewing platform and former coastguard station