If your copy of Navigation Rules is not COMDTINST M16672.2E it needs to be updated This book contains a complete copy of the Inland and International Navigation Rules as presented by the United States Coast Guard. The Coast Guard requires that an up-to-date copy such as this one be carried on all vessels 12 meters (39 feet) or more in length at all times.In addition to a complete copy of the USCG edition (COMDTINST M16672.2E), Paradise Cay Publications has added the following features to make our book more useful and comprehensive. 1) We have created an "Annotated Contents." This added feature will help guide the reader to a desired rule. The topic of each subsection of the rules has been noted for quick reference along with the page numbers for Inland and International Rules. 2) We have updated this edition for corrections presented in Notice to Mariners up through December, 2003. 3) We have included detailed instructions on how to log on to the NIMA website and update this Rules Publication.Please note that no other Rules publication gives you the most up to date version at the time of printing nor the tools to correct the publication.