Direction Light

From International Dictionary of Marine Aids to Navigation
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A light illuminating a sector of very narrow angle and intended to mark a direction to be followed. (Fig.46a)

Ch2 Fig46a.jpg

Note: See also 2-5-240.

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM