Full Steam Ahead!

Full Steam Ahead! (HM22GG)

Location: Vicksburg, MS 39183 Warren County
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Country: United States of America
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N 32° 22.551', W 90° 51.995'

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Inscription
Steam-driven propulsion systems like the one you see
here powered riverboats churning up and down western
rivers in the mid-1800s. Cairo's engines and boilers are
among the oldest and best surviving examples of this
type of machinery.

[Photo captions]
Left middle: Steam Drum
A long drum connected to the top of the boilers
collected steam and delivered it to the engines.

Left bottom: Boilers
The five long boilers you see to your left made steam to power
Cairo's engines. The boilers were heated with coal—2,000
pounds an hour. Hot gasses from the fire flowed through
tubes running the length of each boiler. Heat from the gasses
turned water inside the boilers to steam.

Middle bottom: Piston
The steam drove two huge pistons, one on
either side of the engine compartment.

Right bottom: Oscillating Arm
The pistons pushed oscillating arms that
turned the paddle wheel. At full steam,
Cairo's engines could move the 888-ton
gunboat at about nine miles per hour.
Details
HM NumberHM22GG
Tags
Placed ByNational Park Service, Department of the Interior
Marker ConditionNo reports yet
Date Added Wednesday, November 1st, 2017 at 4:02pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)15S E 700706 N 3584098
Decimal Degrees32.37585000, -90.86658333
Degrees and Decimal MinutesN 32° 22.551', W 90° 51.995'
Degrees, Minutes and Seconds32° 22' 33.06" N, 90° 51' 59.7" W
Driving DirectionsGoogle Maps
Area Code(s)601
Closest Postal AddressAt or near Union Ave, Vicksburg MS 39183, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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