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- Master & Chief Mate (Oceans or Near Coastal (Unlimited Tonnage)) »
- Q109 - Navigation Problems: Oceans
246. On 23 August at 0604 ZT, in DR position LAT 16° 42.3' S, LONG 28° 19.3' W, you observed an amplitude of the Sun. The lower limb was a little above the horizon, and the Sun bore 076.0° pgc. At the time of the observation, the helmsman reported that he was heading 143° pgc and 167° per standard magnetic compass. The variation in the area was 23° W. What were the gyro error and deviation for that heading?
The Sun's true bearing at amplitude was approximately 078T, resulting in a 2 east gyro error. With the given variation and heading, the deviation is 1 east.
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