In this study, marine casualties which are registered GISIS (Global Integrated Shipping Information System) in 2009-2011, result in death, injury, economic loss and environmental pollution are discussed. The studied types of ships are container, bulk carrier and tanker. The information contained in GISIS system is textual format and it is difficult to systematically analyze this information. For this reason, by creating a new data base, which is Microsoft Excel-based , ship accidents are classified according to name and type of ship, type, size and coordinates of the accidents that are evaluated by entering the GIS (Geographic Information System) system. Sea areas, which are investigated in the study accidents, are northern Europe, Mediterranean, Black Sea, the Arabian Peninsula, Southern Asia, Australia, South East Asia and the Americas where the accidents are intensively experienced. Sea areas, where the marine accidents are concentrated by using GIS, are determinated and the maps of sea accident are constituted. As a result of the study the highest risk sea areas are Northern Europe, Singapore Strait, Istanbul Strait, the Suez Canal, and Kanmon Strait and Malaca Strait.