Question 788Navigation General

70% to pass

An instrument that maintains a continuous record of humidity changes is called a _______________.

A thermograph
B hygrograph
C barometer
D thermometer
AI Explanation

The correct answer is B) hygrograph. A hygrograph is an instrument that continuously records changes in humidity over time. It measures the amount of moisture in the air and produces a graphical record of the humidity levels. This makes it the appropriate instrument for maintaining a continuous record of humidity changes. The other options are incorrect because: A) a thermograph records temperature changes, C) a barometer measures atmospheric pressure, and D) a thermometer only measures temperature at a specific point in time, not continuously.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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