facilitated as play equipment in a local park near the wreck site, as well as an amusement park themed under the country of the wreck’s nationality. This research aims to present how the archaeological evidence confirm historical records related to the Western shipwrecks though the result of investigation of underwater cultural heritage, as well as to analyse how those initial contacts with the Westerners though the wreck accidents developed into the cultural interaction which can be influential even now. ]]> A magnetometer or metal detectors are used to detect metallic objects exposed or buried in the seabed. In case of magnetometer, the depth of exploration is deep and exploration work is fast, but there is a disadvantage that non-ferrous metals except iron is not reacted. When using a metal detector, which is a type of electromagnetic exploration, there is a method using a portable metal detector and a method of towing an antenna in a vessel. In the case of a portable metal detector, since the diver is directly using it underwater, there is a time limitation and a disadvantage that it is difficult to know the position. In addition, when the antenna is towed at the vessel, the antenna is spaced at a considerable distance from the seabed, so that the buried metal cultural heritage may not be detected. To overcome these drawbacks, this system aims to develop an antenna platform as a method for bringing the antenna of the metal detector closer to the seabed. The antenna platform is made of metal-free PVC and designed as a caterpillar. The caterpillar shape allows easy passage of obstacles in the sea floor and allows the antenna to be wrapped and protected. In addition, software was developed to verify and store location information obtained using DGPS and response values for underwater metal cultural heritage obtained through the antenna platform in real time. ]]> ceramic glaze wares that were used in maritime trade in the Persian Gulf during the Sassanid and early Islamic periods.]]> welfare for ancient cultural relics is paramount. We will do our best to return these ancient cultural relics back to their hometown, and let the ancient cultural relics engage and influence the public. ]]> related to weathering. From an archaeometry perspective, this research provides some insight on production standardization in Jingdezhen as well as on subsequent modifications that can affect ceramics found in an underwater archaeological context. ]]> wreck assemblage was typical of a Southeast Asian maritime trader. Comparison of burial and shipwreck ceramic compositional data enables us to confirm a provenance for some of the jars and fine wares from production centres in central Northern Thailand. A second group, not represented in the wreck assemblage, is from a yet unidentified source that we suggest is located in the adjacent Cambodian lowlands. The results of this provenience analysis highlights both the role of the relatively well-known maritime trade, as well as a previously unsuspected continuity in local Cambodian stoneware production. This window into 15th c exchange networks expands our understanding of the context of subsequent European 16th-17th c engagement during the Early Modern Period, is one piece of the broader picture needed to more closely define the processes of economic transformation. ]]>