Question 869Navigation General

70% to pass

Which instrument is used to predict the approach of a low pressure system?

A Anemometer
B Fathometer
C Thermometer
D Barometer
AI Explanation

The correct answer is D) Barometer. A barometer is the instrument used to measure atmospheric pressure and predict the approach of low pressure systems. Low pressure systems are typically associated with stormy weather, so monitoring changes in barometric pressure is an important tool for mariners to anticipate the arrival of approaching storms. The other answer choices are incorrect because: An anemometer measures wind speed, a fathometer measures water depth, and a thermometer measures air temperature - none of which are directly used to predict low pressure systems.

Related Questions
Q@q.QuestionNumber:The Light List shows a lighted aid to navigation on the left bank. This means th... Q@q.QuestionNumber:If you are sailing from the East Coast of the United States to the Caribbean Sea... Q@q.QuestionNumber:Which current would you encounter on a direct passage from southern Africa to A... Q@q.QuestionNumber:Where would you find information concerning the duration of slack water? ... Q@q.QuestionNumber:Diurnal aberration is due to _______________.

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