Lines on a chart which connect points of equal magnetic variation are called __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — isogonic lines
In USCG General Navigation principles (Bowditch, Light Lists, and Coast Pilots), regarding 'Lines on a chart which connect points of equal magnetic variation are called', the verified fact is: 'isogonic lines'.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.