Question 1125Navigation General

70% to pass

Scales on aneroid barometers are usually graduated in inches of mercury in the general range of _______________.

A 26 to 29 inches
B 28 to 31 inches
C 30 to 33 inches
D 32 to 35 inches
AI Explanation

The correct answer is B) 28 to 31 inches. Aneroid barometers used for marine applications, such as those required for a U.S. Coast Guard Captain's License, are typically graduated in the range of 28 to 31 inches of mercury. This range corresponds to the normal atmospheric pressure variations encountered at sea level. The other answer choices fall outside the standard range for aneroid barometers used in maritime applications.

Related Questions
Q1558:"Rotation" is the _______________. Q1598:The Moon is nearest to the Earth at _______________. Q756:What option does an Electronic Plotting Aid (EPA) not have? Q80:The refraction correction table given in the Nautical Almanac is based on a stan... Q1188:Your ship is proceeding on course 320°T at a speed of 25 knots. The apparent win...

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