Ten Passaic-class Monitors That Were Built During the American Civil War
Passaic -class monitors, which were designed by John Ericsson, were single-turreted warships that served in the Union Navy during the American Civil War. The latest generation of ironclads represented an improvement to the design of USS Monitor , which Ericsson had invented, and there are a variety of written sources of information about the technical details of these ships as well as their service histories. John Johnson, on page 43 The Defense of Charleston Harbor , explains that the thickness of iron that protected the turrets of the new generation of monitors was increased from 8 inches to 11-inches and claims that the pilothouse was moved from the fore-deck to the top of the turret. Richard H. Webber, who wrote Monitors of the U.S. Navy , explains that the second generation of Ericsson batteries were equipped with two vibrating-lever engines and a pair of Martin boilers. It is reported that the engines, which Ericsson had designed, were capable of generating an indicate...