Four Young Explorers by Oliver Optic

As the Blanchita approached her destination many Dyaks appeared on the shores. They were Sea Dyaks in this region; and the name seems to have come down from a former era in the history of the island, for at the present time they have little or no connection with a sea-faring life, and their sampans are mainly if not entirely used on the rivers. But formerly they built large war-boats, or _bankongs_, some of which were seventy feet long.

These craft did not go to sea. The naval battles were fought on rivers and lakes; for the boats were not adapted to heavy weather, and could not have lived even in a moderate gale. They were propelled entirely by oars, single banked, and twenty-four rowers were all that could work. The largest of them had a platform or elevated deck, under which the oarsmen sat, and on which the warriors engaged the enemy.