The domestic and international rules governing the qualifications for personnel serving on tank vessels have changed in recent years. To address those new requirements, the fourth edition of Tanker Operations incorporates new material by Mark Huber and other contributors, providing an updated textbook for maritime schools and individuals pursuing a tankerman endorsement. It is also a standard reference for anyone involved in the tanker industry. The subject areas from the third edition have been expanded and address such basics as vessel construction and cargo characteristics; cargo piping and venting systems; cargo measurement and transfer operations; ballasting and deballasting; tank cleaning operations and pollution regulations; gas freeing and inert gas systems. New sections include inspection procedures for chartering, cargo pump troubleshooting, and details concerning the role of the tankerman from a commercial perspective in the transportation industry. Separate chapters are devoted to the hazards and precautions relating to enclosed space entry and the emergency operations that involve situations specific to the cargo area of a vessel. Review questions have been incorporated at the end of each chapter to ensure that the information has been covered and understood by the reader. A comprehensive glossary is also provided.