The ocean is spread over 70% of the earth surface. It hides a huge potential energy in the different form. The world needs more and more energy with the passage of time. This ocean energy will provide enough energy to the earth's inhabitant in the future. However the technology development in this regard is much behind. One of the effort is to discuss in this book about the extraction of the ocean energy for the betterment of humanity. The author Engineer Noor Rahman discuss all the phases of his project in this book.