Question 1893Navigation General

70% to pass

A great circle crosses the equator at 162°E. It will also cross the equator at what other longitude?

A 126°W
B 62°E
C 162°W
D 18°W
AI Explanation

The correct answer is D) 18°W. A great circle is the shortest distance between two points on the Earth's surface, and it will cross the equator at two points that are 180 degrees apart in longitude. Since the great circle crosses the equator at 162°E, the other point where it will cross the equator is 180 degrees away, which is 18°W. The other options are incorrect because: A) 126°W is not 180 degrees away from 162°E. B) 62°E is not 180 degrees away from 162°E. C) 162°W is the same as 162°E, not 180 degrees away.

Related Questions
Q372:An alternating light _______________. Q321:What is a lighted safe water mark fitted with to aid in its identification? ... Q1793:The difference between the DR position and a fix, both of which have the same ti... Q1637:If the Sun's observed altitude is 54°30', what is the zenith distance? Q1680:Which of the following is the reference point to measure an azimuth angle for a ...

Ready to test your knowledge?

Take a Navigation General Practice Exam
Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
← Previous All Questions Next →

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience.

App Store