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- Q135 - Navigation Problems: Oceans
50. At 0900 zone time on 23 September your DR position is LAT 28° 48.0' N, LONG 153° 11.5' W. You are steering course 257° T at a speed of 18.0 knots. You observed 3 morning sun lines. Determine the latitude and longitude of your 1020 running fix. Zone Time GHA Observed Altitude Declination 0915 110°44.9' 40°01.9' S 0°15.8' 0950 119°27.4' 46°22.9' S 0°16.3' 1020 127°00.9' 51°21.7' S 0°16.8'
The correct fix is determined by advancing earlier lines of position (LOPs) along the DR track to a common time and intersecting them with the 1020 LOP, resulting in a position of 28 49.1' N, 153 37.0' W.
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