The Border Protection and Sea Defense in the South Viet Nam of the Nguyen Dynasty in the First Half of the 19th Century


  • Luu Van Quyet
  • Vo Van Sen
  • Nguyen Thi Anh Nguyet
  • Vo Phuc Toan



From distant past to present day, the Southern region has been playing an important role in national defense and foreign affairs, with great potential to create a breakthrough for the socioeconomic development of Vietnam. However, due to historical conditions and geographical location, political instabilities were frequently seen in the Southern region under the rule of the Nguyen lords and the early Nguyen Dynasty (early 19th century), especially the instability of the relationship between three feudal countries: Dai Viet (Vietnam), Chenla (Cambodia) and Siam (Thailand) from the 17th century to the first half of the 19th century. In its Southern defense strategy to prevent Siamese invasions and maintain its position as the "protector" of Chenla as well as to develop the new land, the Nguyen Dynasty focused on building border defense formation on land and sea in the South, with the defense system on the border area of Chau Doc, Ha Tien and the Southwestern sea in the Gulf of Thailand as the focus. The Nguyen Dynasty's proper implementation of policies in the border and sea areas had brought great effects and contributed to the strong protection of Dai Viet's sovereignty over the Southern land.