This, the 12th edition of this book has been revised only to the extent of illustracting, primarily, the impact of Containerization and the influence of ports, and their activities, upon those, such as Ships officers and others involved in the maritime environment. Other than that, this book retains much of the 11th edition insofar as that can be pertinent and useful in a changing international industry covering the widest spectrum of goods and services moving around the world.