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- Q212 - Navigation General: Oceans
122. What is the most important source of information to be used in correcting charts and keeping them up to date?
Notice to Mariners is the official publication for correcting nautical charts and ensuring their accuracy; it provides updates on aids to navigation and safety changes issued by hydrographic offices, unlike Pilot Charts, Sailing Directions, and Fleet Guides which offer routing, coastal information, or naval operational data respectively.
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