set with a quadrilateral headsail, sometimes also canted as depicted in the Borobudur ships. In the colonial era, these were replaced by triangular western-style jibs (often several in later periods), and the tanja sails themselves were slowly replaced with western rigs like gaff rigs.

The 3rd century book "Strange Things of the South" (?????) by Wan Chen (??) describes large ships which originates from