After the great success of the “Merrimac” in Hampton Roads, the Confederates determined to construct a vessel of similar design for use in the Southern rivers and sounds. Under great difficulties they built the “Albemarle” on the Roanoke River, and carried her into action almost before the last rivet was driven. She was a formidable craft in those days, and the shots from the vessels of the Northern fleet went harmlessly against her iron sides to break and fly into a thousand pieces. On the 5th of May the “Albemarle” had another fight with a larger fleet of Union vessels, which had gathered to hem in and disable her. During the action the “Sassacus” saw an opportunity to ram her, and, going ahead at full speed, struck the ram a terrific blow amidships. The bow of the “Sassacus” was literally torn to pieces by the impact, and the “Albemarle,” though heeling over and in danger of sinking for a time, finally righted and pulled out of the action uninjured, but by no means disabled. All of the vessels of the squadron kept up a heavy fire upon her, but she went on to her anchorage up the river, where a few repairs made her as good as ever. It looked to the Unionists as though the story of the “Merrimac” with the “Congress” and the “Cumberland” was about to be repeated; that the “Albemarle” in course of time would come down at her leisure and destroy all Northern vessels in those waters. To make matters worse, the Unionists learned that another vessel of a similar type was nearly completed, and that the two vessels would attack at the same time,--a combination which, with their consorts, seemed irresistible. Something had to be done if the command of the sounds of the Carolinas was to remain with the navy of the North. But during the summer of 1864 two steam launches rigged up as torpedo-boats, the invention of Engineer J. L. Long, were fitted out at New York and brought down through the canals to Albemarle Sound. The bows of the boats were cut under and decked over, and the engines were so built that when covered and moving at a low rate of speed they made little or no noise. A spar ten or fifteen feet long, which carried a torpedo and a firing attachment, projected forward over the bow, and a small howitzer was also mounted forward where it would be useful to repel attack. The government had decided to make a night attempt on the “Albemarle,” and the honor of the command of the expedition was bestowed on Lieutenant Cushing, who had half a dozen times before received the thanks of the secretary of the navy for gallantry in action off Cape Fear River. The expedition was favored by the inactivity of the Confederates. The “Albemarle” lay alongside the dock at Plymouth awaiting the completion of her sister-ship, but this needless delay gave Cushing the opportunity he wanted.