For naviagtion, charts are updated via [0] Notices to Mariners . It is of course the responsibility of the mariner to mark/attach the notice to the chart. [0]

For naviagtion, charts are updated via [0] Notices to Mariners . It is of course the responsibility of the mariner to mark/attach the notice to the chart. [0] https://en.wikipedia.org/wiki/Notice_to_mariners https://en.wikipedia.org/wiki/Notice_to_mariners