Navigation, Seamanship, And Shiphandling (NSS) – Officer Of The Deck (OOD) Phase 2 Practice Exam

Azimuth is defined as a horizontal angle measured clockwise from which reference line?

East base line North base line South base line West base line

Correct Answer:

North base line

Explanation:

Azimuth is the horizontal angle measured clockwise from true north. This north reference line provides a fixed baseline so directions can be expressed consistently; 0° points to north, 90° to the east, 180° to the south, and 270° to the west. In practice, you take the direction to the object and measure the angle clockwise from that north line. If you used a different reference line, the numbers would shift accordingly.

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