What is the compass course of a vessel heading WSW?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 247.5°
West-Southwest (WSW) is located six points clockwise from South (180 degrees) or two points counter-clockwise from West (270 degrees). Calculating two points from West (270 - 22.5) results in 247.5 degrees. This conversion is vital for accurate navigation when using traditional compass points to determine a vessel's true or magnetic heading.
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