What does "Bi-light" mean?

Today it means: A navigation light.

A bi-light is a navigation light showing two colours; red and green for the port and starboard sides. Each colour will show from 0 degrees to 112.5 degrees (22.5 degrees abaft the beam) of the vessel.

See also: Abaft the beam  and: Tri-colour  and: Bi-colour

By SailingQuiz November 2019   Category: Sailing Terms              

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What does Bi-light mean?

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Definition of the nautical phrase "Bi-light".

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