We always update the content according to the latest NTM's (Notice to Mariners) before a print run, or we include a printed addendum which includes any changes.
Our cover design includes the date of the most recent update and is often imitated. Don't be fooled by a subpar version with a similar cover.
Our version is in color, which is important when learning the color patterns of lights.
We include a table of changes at the beginning of the book.
Inside the book we underline and highlight all of the changes made to the edition.
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