Question 820Navigation General70% to pass
The marine sextant is subject to seven different types of errors, four of which may be corrected by the navigator. An error NOT correctable by the navigator is _______________.
AI Explanation
The correct answer is C) prismatic error.
The explanation is as follows:
The seven errors associated with the marine sextant are index error, perpendicularity of the horizon glass, perpendicularity of the index mirror, side error, shimmer error, prismatic error, and eccentricity error. Out of these, the prismatic error is not correctable by the navigator, as it is caused by the prism in the sextant and requires adjustments by a trained technician. The other errors, such as index error, perpendicularity of the horizon glass, and perpendicularity of the index mirror, can be corrected by the navigator through proper calibration and adjustment of the sextant.
Related Questions
#818 A sextant having an index error that is "off the arc" has a _______________.#819 A easterly wave is located 200 miles due west of your position, which is north of the equator. Where will the wave be in 24 hours? #821 Index error of a sextant is primarily caused by _______________.#822 According to Buys Ballot's law, when an observer in the Northern Hemisphere experiences a northeast wind the center of low pressure is located to the _______________.#823 What indicates that a tropical cyclone may be within 500 to 1,000 miles of your position?