...n in the Roads until sundown, and at night anchored off Sewell's Point. A day or so after this the Merrimac, again in need of repairs, went up to Norfolk. During the forty-five days she was under Commodore Tatnall 's command there were but thirteen days in which she was not in dock or undergoing necessary repairs. In consequence of the advance of McClellan's army upon Richmond, the wooden gunboats of t...