Question 1114Navigation General

70% to pass

Which correction(s) must be applied to an aneroid barometer?

A Instrument error and latitude correction
B Height error only
C Instrument error only
D Instrument error and height error
AI Explanation

The correct answer is D) Instrument error and height error. To read an aneroid barometer accurately, two corrections must be applied: 1. Instrument error: This accounts for any inherent inaccuracies or calibration issues with the specific aneroid barometer being used. 2. Height error: This corrects for the change in atmospheric pressure that occurs with changes in elevation above sea level. The other options are incorrect because latitude correction is not required for an aneroid barometer, and considering only one of the necessary corrections (instrument error or height error) would not provide a complete and accurate reading.

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