ISOCEEN 2015 (the 3rd International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management, Surabaya, Indonesia, December 10, 2015) was aimed at providing a discussions, for exchanging of knowledge, researches and of recent solutions for many researchers and experts in the field of Ocean, Offshore, Coastal engineering, Environmental and Disaster Management. The results of discussions are presented in this book. We hope this book will be interesting and usefull for many engineers and scientists whose activity related with researches of ocean and development of coastal areas.