Question 311Navigation General

70% to pass

Of the four light characteristics shown in illustration D019NG below which one does NOT represent a safe water mark of the IALA Buoyage System?

Diagram for USCG Navigation General: Of the four light characteristics shown in illustration D019NG below which one...
A A
B B
C C
D D
AI Explanation

The correct answer is A. The IALA Buoyage System defines four primary light characteristics: fixed, flashing, occulting, and isophase. Option A, which depicts a fixed light, does not represent a safe water mark in the IALA Buoyage System. Safe water marks are typically indicated by a white light with a red sector or a white light with a green and red sector. The other options, B (flashing), C (occulting), and D (isophase), can represent safe water marks in the IALA Buoyage System.

Related Questions
Q@q.QuestionNumber:In the U.S. Aids to Navigation System on the Western Rivers, the light character... Q@q.QuestionNumber:The immediate surroundings of what constellation contain the most first magnitud... Q@q.QuestionNumber:A facility used for the discharge of a cargo of a particular hazard, such as chl... Q@q.QuestionNumber:In the celestial equator system of coordinates what is equivalent to the longitu... Q@q.QuestionNumber:Which theoretical minimum number of measurements from satellites does a GPS rec...

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