It is still vastly believed that the Austronesian-speaking people introduced the watercraft technology to the islands Southeast Asia, even though some scholars have argued that the technology has developed during the peopling of Sahul. This topic is rarely discussed, especially in the prehistory and protohistory research, due to, arguably, the absent of direct archaeological evidence. However, in the last decade, research on plank-built wooden boat remains and shipwreck sites in the region has been intensified, with some sites dated to the first millennium CE, even before. This nautical archaeology research is somehow overlooked in the broader discussion of human migration through maritime Southeast Asia. This project studies the latest findings of plank-built boat and ship remains in Indonesia and analyses them in Southeast Asian context and beyond. It will focus on determining the chronology of the findings using radiocarbon dating methods and establishing a database of plank-built watercrafts found in the region. The results will then be used to understand the dynamics of the development of the early plank-built shipbuilding in islands Southeast Asia. Furthermore, this project aims to study how the watercrafts contribute to the pre- and protohistoric human migration network in the region.