On 15 November your 0813 zone time (ZT) fix gives you... - USCG Navigation Problems

On 15 November your 0813 zone time (ZT) fix gives you a position of LAT 22°30.0'N, LONG 67°28.0'W. Your vessel is on course 164°T, and your speed is 13.5 knots. Local apparent noon (LAN) occurs at 1215 ZT, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 49°46.0'. What is the latitude at 1200 ZT?

A 21°39.3'N

B 21°32.8'N

C 21°36.0'N

D 21°42.5'N

AI Explanation

The correct answer is D) 21°42.5'N. This is correct because the latitude at 1200 ZT can be calculated using the information provided about the vessel's position, course, and speed, as well as the observed meridian altitude of the Sun at local apparent noon (LAN). Using the distance traveled between the 0813 ZT fix and 1200 ZT, and the vessel's course and speed, the position at 1200 ZT can be determined. The observed meridian altitude of the Sun's lower limb at LAN can then be used to calculate the latitude at 1200 ZT. The other options are incorrect because they do not accurately reflect the latitude at 1200 ZT based on the given information.

Question 47Navigation Problems