The revolving turret of the Monitor measured 22 feet in diameter, and nine feet high. The Monitor was the first ship to have a revolving turret. Image courtesy of Monitor 2001, Monitor Collection, NOAA/OER.
The revolving turret of the Monitor measured 22 feet in diameter, and nine feet high. The Monitor was the first ship to have a revolving turret. Image courtesy of Monitor 2001, Monitor Collection, NOAA/OER.