In Singapore the Rajah purchased a new vessel, the _Julia_, having sold the _Royalist_; the _Julia_ was fitted as a gunboat. Early in June he returned to Sarawak in the _Harlequin_.
He found that during his absence, his old enemy, Sherip Sahap, had built many war-boats, and had made great preparations for offensive operations. Kuching was supposed to be his object, and it had been put in a state of defence, but on the Rajah's return Sahap deemed it advisable to retire to the Batang Lupar, and taking with him a large force marked his course with bloodshed and rapine. He then fortified himself at Patusan, below the Sekrang, and the Dayaks were sent out ravaging in every direction. Eight villages were burnt in the Sadong, the Samarahan people were attacked, and many women and children were captured. A party even ventured into Sarawak, and cut off two Singgi Dayaks on their farm, but they did not get off scot free, for the Rajah, starting in the middle of the night, intercepted their return and gave them a sharp lesson.
Patusan,[120] the stronghold of Sherip Sahap, with whom was Pangiran Makota, was on the left-hand bank of the Batang Lupar, about fifteen miles below the Undup stream, up which, about seven miles from the mouth, was the stockaded town of Sahap's brother, Sherip Mular. Besides numerous Malays, these sherips were supported by the Sekrang Dayaks, then estimated to number some 10,000 fighting men, and these warriors, though they might not recognise the power of the sherips over them in other matters, were always ready to respond to a summons to engage in a plundering raid.
Captain Keppel had been long expected, but the _Dido_ had been detained in India, and when she arrived on July 30, with the welcome addition of the H.E.I.C.'s steamer _Phlegethon_, preparations for the coming expedition against the Batang Lupar were so well forward that it was enabled to start almost immediately. On board the _Dido_ was the Rajah's favourite nephew, midshipman Charles Johnson, who eight years later became the Tuan Muda of Sarawak, and who ultimately succeeded his uncle as Rajah.
The combined force of blue-jackets, Malays, and Dayaks, headed by the _Phlegethon_, started from Kuching on August 5th, and on the 7th were off Patusan. This place was well fortified, sixty-four brass besides many iron guns were taken there,[121] and its five forts were captured, with heavy loss to the pirates. The attacking party lost only one man killed, the captain of the main-top of the _Dido_, who was cut in two by a cannon-shot whilst loading the bow-gun of the _Jolly Bachelor_; close to him was the present Rajah, who fortunately escaped unhurt.