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Sailing aboard the schooner Royalist in 1839, James Brooke enters the Sarawak River and establishes contact with Rajah Muda Hassim. Local Malay chiefs and Dayak tribes remain locked in an anti-tax insurrection against the Brunei sultanate's governor. Brooke offers diplomatic counsel and military assistance, using his armed crew to help suppress the revolt in exchange for territorial concessions.
Rajah Muda Hassim formally cedes the government of Sarawak to James Brooke, installing him as Rajah at Kuching. The new ruler drafts a basic legal code aimed at protecting indigenous inhabitants from extortionate taxation and forced labor. Free trade regulations open local waterways to regional commerce while replacing arbitrary feudal fines with fixed judicial procedures.
Captain Henry Keppel arrives aboard HMS Dido in 1843 under orders to suppress Malay and Sea Dayak piracy off the coast of Borneo. Keppel coordinates naval operations directly with Rajah Brooke to target heavily fortified river strongholds. Armed pinnaces and cutters prepare to navigate shallow, narrow inland tributaries where heavy warships cannot sail.
Combined British sailors and native war prahus assault pirate stockades hidden along the Sarebas and Batang Lupar rivers. Massive wooden boom barriers across the river fail to stop the naval advance, leading to the capture of riverfront forts and pirate vessels. The destruction of these bases temporarily dismantles regional pirate networks and secures coastal shipping routes.
James Brooke and British naval power establish authority in Sarawak while dismantling coastal piracy along Bornean river systems.