Question 49Navigation General

70% to pass

Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?

A True bearings as observed from the light toward the ship
B An outline of the area of the sector
C Geographical positions outlining the area of the sector
D True bearings as observed from the ship toward the light
AI Explanation

The correct answer is D) True bearings as observed from the ship toward the light. The limits of a colored sector of a light are listed in the Light List in terms of the true bearings as observed from the ship toward the light. This is because the Light List is a reference for mariners, so the bearings are provided from the perspective of the vessel, not the light itself. The other options (A, B, and C) do not accurately reflect how this information is presented in the Light List.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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