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- Q135 - Navigation Problems: Oceans
310. On 28 July your 0800 zone time fix gives you a position of LAT 25° 16.0' N, LONG 71° 19.0' W. Your vessel is on course 026° T, and your speed is 17.5 knots. Local apparent noon (LAN) occurs at 1149 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 82° 28.7'. What is the calculated latitude at LAN?
The correct latitude at Local Apparent Noon (LAN) is calculated using the meridian altitude formula: Latitude = Declination + Zenith Distance. Given the Sun's declination and observed altitude, the latitude is determined to be 26 25.0' N.
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