Eagle Seamanship: A Manual for Square Rigger Sailing continues to be the reference of choice for Eagle crewmembers, Coast Guard Academy cadets and officer candidates, and tall ship sailors throughout the world. The new fifth edition of this classic manual is fully revised with two newly added chapters on Boat Operations, detailing procedures for handling the Barque’s boats, and another on Deck Operations, covering anchoring, rigging, dressing, and line handling. Other key updates include structural changes during service life extensions, evolving CONOPS, dynamic deployments, and training missions. ​ Chapters 2 through 7 include updates to construction details, rigging, sail configurations, safety standards, harbor preparations, sailing theory, and tacking procedures. Chapter 11 now address emergency conditions with new figures for clarity. ​The book’s extensive glossary of square-rigger nomenclature, diagrams of rigging and sails, and explanations of sailing theory make it an essential resource.