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AIS - Check your GPS Offset For Errors | gCaptain.com

Started by gcaptain · 11 months ago

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  • Maybe the waypoints listed on the ship's log were in the wrong datum. Perhaps the coordinates listed are in NAD-27 and the ship's GPS uses WGS-84. There might be an error in the north reference, with the captain reporting magnetic and AIS reporting true bearings, a 17-degree difference. There was a report of the captain being unfamiliar with the ship's navigation equipmant, which should be standardized.

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