Maritime activities in coastal area north Sumatera does not only appear in one location and a certain period of time as not as can be stand-alone. Indications of dynamics, interrelation, and utilization continuity of coastal area north Sumatera in maritime activities and interaction between the nation and the culture that occur in the past is big enough. Study of Archeology which sufficient intensive has done in sites Pulau Kampai, Kota Cina, and Kota Rantang in a certain period of time resulted from the data which quite interesting. The information gets by the data is tended to show the existence of voyage activities and trade, also the introduction of few aspect of life, with a quite valid of chronology. All of them are showing the past activities in that area fulfilled with diverse activities that show its power as an economic world track which connected of east and west cultures. There is the continue of the activity is revolve in VIII to XVI centuries. Even the discovery of archeology Pulau Kampai shows the existence of continuity activities in XVI to XX centuries.