This book covers the principal topics in thermodynamics for officer cadets studying Merchant Navy Marine Engineering Certificates of Competency (Co C) as well as the core syllabi in thermodynamics for undergraduate students in marine engineering, naval architecture & other marine technology related programmes. This new edition will cover the laws of thermodynamics & of perfect gases, their principles & application in a marine environment. This key textbook takes into account the varying needs of marine students, recognising recent changes to the Merchant Navy syllabus & current pathways to a sea-going engineering career, including National Diplomas, Higher National Diploma & degree courses.