It was near the end of the great war that Cushing performed the greatest feat of daring of his adventurous career; and, as on the previous occasions, the scene of the exploit was in the waters tributary to the North Carolina sounds. Early in the spring of 1863 it became evident to the officers of the Union squadron in the sounds, that the Confederates were making arrangements to drive the Yankee ships from those waters, and to re-open the coasting-trade to the people of North Carolina. The chief source of alarm to the fleet was a heavy iron-clad which was reported to be building on the Roanoke River above Plymouth. Full descriptions of this vessel were in the hands of the Union officers; and they saw clearly that, should she be completed, no vessel of the sound squadron, nor perhaps the entire navy, would be able to do battle against her successfully. The river was too shallow for the war-vessels to go up to the point where the ram was being built, and the channel at Hatteras Inlet was not deep enough for iron-clads to be brought in to compete with the enemy when finished. The naval authorities repeatedly urged the army to send an expedition to burn the boat; but Major-Gen. Foster, in command of the department of North Carolina, declared it was of no importance, as the Confederates would never put it to any use. Time showed a very different state of affairs. In April, 1864, the ram was completed, and named the "Albemarle." Her first work was to co-operate with ten thousand Confederate troops in the recapture of Plymouth, which was accomplished with very little difficulty. Lieut. Flusser was at Plymouth with four small gunboats, and remained bravely at his post as he saw the powerful ram bearing down upon him. It was half-past three in the morning, and the chill, gray dawn was just breaking over the earth. Above the river hung a mist, through which the great body of the ram could be seen coming doggedly down to the conflict. The "Miami" and "Southfield" were lashed together; and, at the order of Commander Flusser, they started to meet the iron-clad, firing quickly and with good aim. The "Albemarle" came on silently, disdaining to fire a gun. With a crash she struck the "Miami" a glancing blow on the port-bow, gouging off two great planks. Sliding past the wounded craft, she plunged into the "Southfield," crushing completely through her side, so that she began to settle at once. The lashings between the gunboats parted, and the "Southfield" sank rapidly, carrying part of her crew with her. As the "Albemarle" crashed into the two vessels, she fired her bow-gun several times, killing and wounding many of the Union sailors, and killing Lieut. Flusser. When she turned and made a second dash for the "Miami," the latter fled down the stream, knowing that to dare the power of the enemy was mere madness. The "Albemarle" steamed back to Plymouth, and by her aid the town was easily recaptured by the Confederates.