The impacts of Section 27 of the Merchant Marine Act of 1920, today commonly referred to as the Jones Act, are often debated in maritime circles. But the well-known U.S. law, which requires vessels that transport goods between U.S. ports to be American-built, -flagged, -owned and -crewed, hasn’t always been a hot button issue, according to Charlie Papavizas, author of a new book on the subject