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 does the aid's light or reflector at night. [3] Standard signboard shapes are square, triangular and rectangular; and the standard colours are red, green, orange, yellow and black. [2]
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 |
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 does the aid's light or reflector at night. [3] Standard signboard shapes are square, triangular and rectangular; and the standard colours are red, green, orange, yellow and black. [2]
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 |