This study is a part of group study on Kra Project, comprising of merchant marine, engineering and environmental aspects. This report aimed to summarize the studies related with the Kra Project from the past and recommend the issues needed for further study. The review of previous studies started from the year 1793 up to present, including the most popular reference used, i.e., TAMS (1972). The summarize of TAMS study was then included in the report. However, after the year 1972, Thailand had developed the Deep water port projects, i.e., Laemchabang and Maptaphut Ports. The study then summarized the developments and their impacts present physica conditions in brief. Besides, the additional studies on port development, coastal issues and coastal engineering studies with foreign similar coastal coastal develo0pment projects were also included. The main critieria of canal alignment, development scheme, canal section, construction methods, construction cost and time were proposed. Furthermore, the further more detailed studies on maritime, engineering, evnironment, and economics were recommended in order to be able to conclude the feasibility of the project and decide on the appropriate role of the country towards the development of Kra Project.