Marine Zone: Thailand has 23 provinces that are bordered by the sea, divided into the west coast, including the Andaman Sea, including the Malacca Strait, 6 provinces, and the east coast, including the Gulf of Thailand, 17 provinces. The determination of provincial boundaries in resource management from marine boundaries can be clearly defined for only 7 provinces, namely Phetchaburi Province. Samut Songkhram Province Samut Sakhon Province Samut Prakan Province Chachoengsao Province Chonburi and Bangkok Which is a province in the inner Gulf of Thailand. However, the other 16 provinces that are bordered by the sea do not have a clear map of marine use. As a result, the overall picture of utilization and maritime zoning in Thailand is still unclear. and maritime spatial planning in Thailand Therefore, it is necessary to expedite the preparation of an overview map of the country and specific maps that are of the same standard. for the relevant agencies to use in their responsible missions and for the preservation of national interests at sea by creating a balance of marine resources and environment to be a stable base for Thai economic development to be stable, prosperous and sustainable in the future