The Dutch learned in Pulau Petak that a preparation of attack was being made at Sungai Kayu and three fortified rafts were being prepared; "pembekkel" (village chief) Soelil, who received his orders of prince Antasari, intended to launch a new attack on Pulau Petak, in which the rafts (kotta mara) would occupy the steamships, while the main attack with a large force on the land side would happen.