It was the 28th of August before another attack was made on Tripoli, in which Somers participated. The ketches bombarded it on the night of the 24th; but finding little impression made by this mode of assault, Com. Preble determined to renew the cannonading. On this occasion Capt. Somers led one division of the gunboats, as before, while Capt. Decatur led the other; the latter having five of these craft under his orders, and the former three. The approach was made under the cover of darkness, all the boats anchoring near the rocks, where they opened a heavy fire on the shipping, castle and town. The brigs and schooners assisted in this attack, and at daylight the frigate stood in, and opened her batteries. The Tripolitan galleys and gunboats, thirteen in all, were principally opposed to the eight American gunboats, which did not retire until they had expended their ammunition. One Tripolitan was sunk, two more were run on shore, and all were finally driven into the mole by the frigate. On the 3d of September, a fourth and last attack was made on Tripoli by the gunboats, aided by all the other vessels. The Turkish boats did not wait, as before, to be assaulted off the town, but, accompanied by the galleys, they placed themselves under Fort English, and a new battery that had been built near it, with an intention to draw the American shot in that direction. This change of disposition induced Preble to send Captains Decatur and Somers, with the gunboats, covered by the brigs and schooners, into the harbor’s mouth, while the ketches bombarded more to leeward. On this occasion, Somers was more than an hour hotly engaged, pressing the enemy into his own port.