Question 406Navigation General

70% to pass

What is characteristic of an occulting light?

A 5 sec. flash, 5 sec. eclipse
B 6 sec. flash, 6 sec. eclipse
C 1 sec. flash, 2 sec. eclipse, 1 sec. flash, 5 sec. eclipse
D 4 sec. flash, 2 sec. eclipse, 3 sec. flash, 2 sec. eclipse
AI Explanation

The correct answer is D) 4 sec. flash, 2 sec. eclipse, 3 sec. flash, 2 sec. eclipse. An occulting light is characterized by a pattern of flashes and eclipses, where the duration of the eclipse is longer than the duration of the flash. The pattern described in option D matches this definition, with a 4-second flash followed by a 2-second eclipse, and then a 3-second flash followed by a 2-second eclipse. The other options are incorrect because they do not match the defining characteristic of an occulting light, which is the longer eclipse duration compared to the flash duration.

Related Questions
Q@q.QuestionNumber:A Doppler speed log indicates speed through the water _______________. Q@q.QuestionNumber:You are upbound approaching a lock and dam and see two green lights in a vertic... Q@q.QuestionNumber:The dividing meridian between zone descriptions -7 and -8 is _______________. Q@q.QuestionNumber:When correcting apparent altitude to observed altitude, you do NOT apply a corr... Q@q.QuestionNumber:Clearance gauges at bridges indicate _______________.

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.

Get the App