Steve Earley/The Virginian-Pilot
IRONCLAD The U.S.S. Monitor, designed by John Ericsson, was not just the Union's first ironclad vessel but an entirely new kind of warship. Here, conservators work in the upside-down turret.
http://es.wikipedia.org/wiki/USS_Monitor
http://www.marinersmuseum.org/uss-monitor-center/uss-monitor-center
http://www.youtube.com/watch?v=_n-Qb9GZB4Q
http://www.youtube.com/watch?v=MbulLhVvBgI&feature=related
http://www.youtube.com/watch?v=6oya8Z1imSI&feature=related