ABSTRACT Bocai is a traditional ship which originated from Pasir Bongkal Village, Sungai Lala District, Indragiri Hulu Regency. The size type of bocai in the sandstone village is very diverse, caused by the using of bocai itself. Characteristics of the bocai can be seen on the front and back of the blunt, which called as the threshold, in addition to the characteristics of the hull shape or…