Marker Logo HMdb.org THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Vicksburg National Military Park in Warren County, Mississippi — The American South (East South Central)
 

U.S.S. Cairo Engine and Boilers

National Historic Mechanical Engineering Landmark

 

1862

 
U.S.S. Cairo Engine and Boilers Marker image. Click for full size.
By Mark Hilton, October 25, 2017
1. U.S.S. Cairo Engine and Boilers Marker
Inscription. The Cairo is the sole survivor of the fleet of river gunboats built by the Union during the Civil War with the object of controlling the lower Mississippi River. Designed by Samuel Pook and built by James B. Eads, the 175-foot ironclad vessel had 13 guns.

The propulsion system is the only known early example of the widely used "Western Rivers" steamboat engine, characterized by multiple fire-tube boilers with shared steam and mud drums and a two-cylinder noncondensing engine having a small bore, long stroke, and poppet valves. This engine was designed by A.T. Merritt. With a 22-inch bore and 6-foot stroke, it developed about 800 horsepower and drove a sheltered paddlewheel of 22-foot diameter and 15-foor width.
 
Erected 1990 by the American Society of Mechanical Engineers.
 
Location. 32° 22.551′ N, 90° 51.993′ W. Marker is in Vicksburg National Military Park, Mississippi, in Warren County. Marker can be reached from Union Avenue. Touch for map. Located near the USS Cairo Museum. Marker is in this post office area: Vicksburg MS 39183, United States of America.
 
Other nearby markers. At least 8 other markers are within walking distance of this marker. Full Steam Ahead! (here, next to this marker); Wheelhouse - USS Cairo (here, next to
U.S.S. Cairo steam drum and boilers. image. Click for full size.
By Mark Hilton, October 25, 2017
2. U.S.S. Cairo steam drum and boilers.
this marker); The Skylights (here, next to this marker); Chimneys - USS Cairo (a few steps from this marker); The USS Cairo (a few steps from this marker); Pilothouse - USS Cairo (a few steps from this marker); A Crew of Immigrants (a few steps from this marker); A Ton an Hour - USS Cairo (a few steps from this marker). Touch for a list and map of all markers in Vicksburg National Military Park.
 
Categories. LandmarksWaterways & Vessels
 
Marker and 22-foot enclosed paddlewheel. image. Click for full size.
By Mark Hilton, October 25, 2017
3. Marker and 22-foot enclosed paddlewheel.
 
 
Credits. This page was last revised on November 1, 2017. This page originally submitted on November 1, 2017, by Mark Hilton of Montgomery, Alabama. This page has been viewed 85 times since then. Photos:   1, 2, 3. submitted on November 1, 2017, by Mark Hilton of Montgomery, Alabama.
Paid Advertisement