Revenue cutters assisted U.S. Navy operations throughout the war. "Harriet Lane" joined a federal naval squadron to capture Fort Clark and Fort Hatteras, which served as bases for Confederate blockade runners. USRC "E.A. Stevens", a prototype 110-foot semi-submersible ironclad gunboat, in company with USS "Monitor", USS "Galena", and two other gunboats, participated in the unsuccessful sortie up the James River to Drewry's Bluff to attack the Confederate capital at Richmond. After carrying President Lincoln from Washington on 9 May 1862, USRC "Miami" assisted navy transports in landing federal troops at Ocean View, Virginia.