Question 86Navigation Problems

70% to pass

On 3 February your 0547 zone time DR position is LAT 24°18.5' N, LONG 167°25.0' E. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?

A Jupiter, Denebola, Regulus
B Regulus, Deneb, Antares
C Altair, Saturn, Regulus
D Arcturus, Kochab, Venus
AI Explanation

The correct answer is B) Regulus, Deneb, Antares. This is the correct answer because at the given position and time, Regulus, Deneb, and Antares are the three celestial bodies that are best suited for obtaining a navigational fix. These three stars are bright, well-separated in azimuth, and have suitable altitudes for reliable celestial navigation at that location and time. The other answer choices are incorrect because they do not include the optimal combination of stars for a celestial fix at the given position and time. For example, Jupiter and Venus are planets, not stars, and Arcturus and Kochab are not as well-suited for this particular celestial navigation scenario.

Related Questions
Q@q.QuestionNumber:On 12 April at 0515 ZT, morning stars were observed, and the vessel's position w... Q@q.QuestionNumber:On 16 January your 0930 ZT DR position is LAT 26°07.0'S, LONG 51°43.0'E. Your ve... Q@q.QuestionNumber:On 16 October evening twilight will occur at 1746 ZT. Your DR position will be L... Q@q.QuestionNumber:You observe the lower limb of the Sun at a sextant altitude (hs) of 34°51.4' on ... Q@q.QuestionNumber:If the speed necessary for reaching port at a designated time is 16.8 knots and ...

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 Next →

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience.

Get the App