the uss monitor introduced this innovative feature to naval ships around the world
USS Monitor The remainder of the ship was designed by the Swedish-born engineer and inventor John Ericsson and hurriedly built in Brooklyn in only 101 days. Monitor presented a new concept in ship design and employed a variety of new inventions and innovations in ship building that caught the attention of the world. The impetus to build Monitor was prompted by the news that the Confederates were building an ironclad warship, named Virginia, that could effectively engage the Union ships blockading Hampton Roads and the James River leading to Richmond and ultimately advance on Washington, D.C. and other cities, virtually unchallenged. Before Monitor could reach Hampton Roads, the Confederate ironclad had destroyed the sail frigates USS Cumberland and USS Congress and had run the steam frigate USS Minnesota aground. That night Monitor arrived and the following morning, just as Virginia set to finish off Minnesota, the new Union ironclad confronted the Confederate ship, preventing her from wreaking further destruction on the wooden Union ships. A four-hour battle ensued, both ships pounding the other with close-range cannon fire, although neither ship could destroy or seriously damage the other. This was the first-ever battle fought between two armored warships and marked a turning point in naval warfare.