Knabat bogolu is a type of traditional war vessel from Mentawai islands, west Sumatra, Indonesia.
[1] A boom-spar is located above the vessel, one end of which rests on the roof.
It has two masts, each rigged with narrow, very high sails from bamboo and palm leaf.
At the bottom of this shelter weapons and food are stored in the hold of the vessel.
On such a journey from which the women are excluded, all fighters are adorned in full armor.