The outside corrosion of the oil tankers can be divided into three areas: Atmospheric exposed areas, alternate wet/dry cycling areas and fully immersed areas. The inside corrosion of the oil tankers refers to corrosion in cargo tanks, ballast tanks, board structures, pipelines and onboard equipment. In this book, mechanisms of the corrosion inside and outside the oil tankers have been discussed in detail. All different types of corrosion which attack parts of oil tankers are mentioned with illustrations and actual photos. These are including microbial induced-corrosion (MIC), pitting corrosion, general corrosion, stress corrosion cracking (SCC) and hydrogen cracking. Corrosion control, for the oil tankers, including cathodic protection and coating are demonstrated intensively; showing the newest methods for application.Information about Oil Tankers, Chemical Tankers and Dry Docks in Gulf Cooperation Council (GCC) can be found in the book. Also Inspection and maintenance of oil tankers and the main oil tankers disasters are discussed in details. The corrosion problem and the causes of M.V. Castor Disaster, The Nakhodka Disaster and Erika Disaster with investigation reports for each were mentioned. This book will meet the required knowledge for all people in the industry sectors related to the corrosion in the oil tankers.