Statistics for occurrence #1 of “Fortress Monroe” in chapter 12 of Admiral David D. Porter, The Naval History of the Civil War.:
...y the Merrimac again appeared and found the Monitor, Galena, Nantucket and a number of heavy ships shelling the works at Sewell's Point; but on the appearance of the iron-clad they all returned below Fortress Monroe .
Tatnall stood direct for the Monitor, which retreated with the other vessels, the Merrimac and consorts following close down to the Rip Raps, where shot passed over the ship and a mile beyond.
† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.