Question 1127Navigation General

70% to pass

A barometric pressure reading of 29.92 inches of mercury is equivalent to _______________.

A 1013.25 millibars
B 766 millimeters of mercury
C 29.92 feet of water
D 76 centimeters of water
AI Explanation

The correct answer is A) 1013.25 millibars. This is because a barometric pressure reading of 29.92 inches of mercury is equal to 1013.25 millibars, which is the standard atmospheric pressure at sea level. This conversion is based on the standard definition of the millibar unit, which is 1/1000th of a standard atmosphere. The other options are incorrect because: B) 766 millimeters of mercury is not equivalent to 29.92 inches of mercury. C) 29.92 feet of water is not the correct conversion for 29.92 inches of mercury. D) 76 centimeters of water is not the correct conversion for 29.92 inches of mercury.

Related Questions
Q1034:As a Merchant Marine Officer you are expected to be able to do which of the foll... Q359:You are in a channel inbound from sea. A daymark used to mark a channel junction... Q1337:Relative humidity is the percentage of water vapor that is in the air as compare... Q1102:In the Northern hemisphere which semicircle of a hurricane is the navigable semi... Q1078:You are in the Northern Hemisphere and a tropical wave is located 200 miles due ...

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