Question 210Navigation General70% to pass
When determining compass error by an azimuth of Polaris, you enter the Nautical Almanac with the _______________.
AI Explanation
The correct answer is C) LHA Aries.
When determining compass error by an azimuth of Polaris, you need to enter the Nautical Almanac with the Local Hour Angle (LHA) of Aries. The LHA of Aries is the angle between the meridian and the hour circle passing through the vernal equinox, which is used to calculate the azimuth of Polaris and subsequently determine the compass error.
The other options are incorrect because GHA Aries and LHA Polaris are not the appropriate values to enter the Nautical Almanac for this procedure. GHA Polaris is also not the correct value, as the azimuth of Polaris is calculated using the LHA of Aries, not the GHA of Polaris.
Related Questions
#208 The reference datum used in determining the heights of land features on most charts is _______________.#209 Under the U.S. Aids to Navigation System, a lighted buoy with a spherical topmark marks _______________.#211 In illustration D044NG below, a pillar buoy is indicated by which letter? #212 Under the IALA-B Buoyage System, when entering from seaward a lateral system buoy to be left to port may display which of the topmarks shown in illustration D046NG below? #213 In illustration D044NG below, what type of buoy is indicated by the letter A?