Question 119Navigation Problems

70% to pass

On 28 February your 1850 zone time DR position is LAT 27°49.0' N, LONG 159°24.0' W. Considering their magnitude, azimuth, and altitude, which group includes the three stars best suited for a fix at star time?

A Hamal, Alkaid, Canopus
B Bellatrix, Vega, Regulus
C Sirius, Mirfak, Elnath
D Rigel, Schedar, Regulus
AI Explanation

The correct answer is D) Rigel, Schedar, Regulus. The key factors in determining the best stars for a celestial fix are their magnitude, azimuth, and altitude. Rigel, Schedar, and Regulus are well-suited because they have a good spread in azimuth and altitude, allowing for an accurate intersection of lines of position. Additionally, these stars are of a relatively bright magnitude, making them easier to observe and identify. The other answer choices do not provide as optimal a combination of these celestial navigation factors.

Related Questions
Q@q.QuestionNumber:On 15 March in DR position LAT 21°42.0'N, LONG 55°26.0'W, you take an ex-meridia... Q@q.QuestionNumber:On 30 March in DR position LAT 20°26.2'N, LONG 131°17.9'E, you take an ex-meridi... Q@q.QuestionNumber:On 7 March at 1838 ZT, in DR position LAT 34°26.9' N, LONG 58°16.2' W, you obser... Q@q.QuestionNumber:On 2 April your 0830 zone time fix gives you a position of LAT 20°16.0'S, LONG 0... Q@q.QuestionNumber:On 10 October your 0930 zone time position is LAT 25°00.0'S, LONG 164°38.6'W. Yo...

Ready to test your knowledge?

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

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience.

Get the App