Daymark


A daymark or a day marker is the daytime identifier of an aid to navigation or day beacon.
Generally, the daymark conveys to the mariner during daylight hours the same significance as does the aid's light or reflector at night.

Daymark chart symbols

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

Examples

In 1864, the Dart Harbour Commissioners erected a daymark at Froward Point near Kingswear in Devon. Often mistaken for a folly it is 80 ft high, octagonal, hollow, tapers gradually from the base to the top, has no roof and no staircase. The base has eight 30ft high pointed arches.