The detachment of vessels under Lieutenant-Commander Phelps were at first delayed by the difficulty of piloting the Lafayette and Choctaw, long vessels of heavy draft, through the narrow and crooked river. The 13th thus wore away slowly, and on the 14th they reached the obstructions. Two rows of piles had been driven across the channel, braced, and tied together; immediately below them was a raft well secured to either bank and made of logs which did not float. Finally a great many trees had been cut and floated down upon the piles from above. The Fort Hindman removed a portion of the raft, and then the Eastport got to work on the piles, dragging out some and starting others by ramming. By four o'clock in the afternoon a large enough gap had been made, and the Eastport, followed by the Hindman, Osage, and Cricket, hastened up the river. Rapid artillery firing was heard as they drew near the works, but being ignorant of the position of the Union troops, few shots were fired for fear of injuring them. The slight engagement was ended by the surrender, a few moments after the boats came up. An order from the admiral to push on at once to Alexandria was delayed five hours in transmission. When it was received, the fastest vessels, the Ouachita and Lexington, were sent on, followed by the Eastport, but got there just as the last of the Confederate transports passed over the Falls. One of them grounded and was burnt. These advance vessels reached Alexandria on the evening of the 15th, the admiral with the rest on the 16th; at which time there had also come up from 7,000 to 8,000 of Smith's corps, the remainder being left at Fort de Russy.