his corvette l'Iroquoise aground at Pointe au Baril on 1 August. Although l'Iroquoise was raised, it was deemed too damaged to be put into action. It was beached again under the guns at Fort Lévis. Amherst's force set out from Oswego on 10 August. Captain Joshua Loring, who commanded the British snows Onondaga and , had been sent ahead of Amherst's force as an advance guard. Onondaga had been launched at Fort Niagara as Apollo in 1759. Commanded by Loring, it carried four 9-pound guns, fourteen 6-pounders and a crew of 100 seamen and 25 soldiers. Mohawk, commanded by Lieutenant David Phipps, carried sixteen 6-pounders and a crew of 90 seamen and 30 soldiers. Battle On 7 August, French lookouts sighted Onondaga and Mohawk from their outpost at Ile aux Chevreuils, upstream from Fort Lévis. The French withdrew in a row galley, pursued by Onondaga and Mohawk. The two British vessels got lost in the maze of islands, and did not find their way back to the main channel for several days. Amherst's force arrived at Pointe au Baril on 16 August. Fearing the remaining French ship might attack his transports, Amherst ordered Colonel George Williamson to capture l'Outaouaise the following day. At dawn of 17 August, Williamson set out in a gig, accompanied by five row galleys (one armed with a howitzer, the others each armed with a single 12-pounder. The galleys took shelter fore and aft of l'Outaouaise, where they could not be hit by the ship's broadsides. The British galleys fired grapeshot and round shot at the French ship, crippling l'Outaouaise, which drifted helplessly towards the British battery set up at Pointe au Baril. After three hours of fighting, l'Outaouaise had managed to fire around 72 shots, damaging two of the British galleys. LaBroquerie was forced to surrender l'Outaouaise to Williamson. LaBroquerie was wounded in the fighting. Fifteen members of his crew were killed or wounded. The captured l'Outaouaise was repaired and renamed Williamson, to be put back into service by Captain Patrick Sinclair against her former owners. On 19 August, Amherst commenced the attack on Fort Lévis. La Force and his crew had been ordered back from the beached l'Iroquoise to the fort to assist with its defense. Williamson was hit 48 times by the five French guns when it joined in with the British batteries firing on Fort Lévis from surrounding islands. Mohawk and Onondaga