Engraving Of Steam Snag Boat <I>A. H. Sevier</I>
notes: label: Description
content: Snags—submerged or partially submerged trees and roots—were one of the main obstructions to navigation, particularly in the Mississippi River below St. Louis and in its larger western tributaries. A majority of the steamboat accidents up to 1849 were the result of collisions with snags. In 1828, steamboat builder Henry M. Shreve was appointed Superintendent of the Western Rivers, and the next year he completed the first steam snag boat, specially built to dislodge river debris. This mid-19th-century engraving taken from the Taylor & Crooks sketch book, <I>St. Louis, 1858</I>, provides an image of the 1840s generation of snag boats.
label: Description
content: These double-hulled craft incorporated an iron-sheathed snag beam at the bow, joining the two hulls. During operations, the boat was run full speed at the projecting snag, forcing it up and out of the water. The snag was then hauled onto the boat deck and cut into pieces. Snag boats were capable of removing snags weighing up to 75 tons.
label: Description
content: The <I>A. H. Sevier</I>, Snag Boat No 4, worked under the direction of the Superintendent of Western River Improvements, within the War Department. Built during the 1840s, each hull of the <I>Sevier</I> was about 150 feet long and 22 feet wide, with 12 feet between the twin hulls.
label: Description
content: In July 1855, the <I>Sevier</I> was auctioned off with all equipment and furnishings at St. Louis for $6,050. It was then chartered by the government in November for $50 per day, with the government responsible for repairs and damage above and beyond ordinary wear and tear. The <I>Sevier</I> continued to work on the Mississippi between the mouth of the Missouri to a point about 18 miles south of Vicksburg—almost 900 miles of operations.
topic: label: Subject
content: Engineering
label: Subject
content: Fishing
label: related event
content: Expansion and Reform
setName: label: See more items in
content: Work and Industry: Maritime
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content: Government, Politics, and Reform
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content: Work
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content: Natural Resources
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content: Transportation
label: Exhibition
content: On the Water
label: Exhibition Location
content: National Museum of American History
publisher: label: Related Publication
content: National Museum of American History. On the Water exhibition website
label: Related Web Publication
content: http://americanhistory.si.edu/onthewater
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: TR.336779
label: catalog number
content: 336779
label: accession number
content: 1979.0415
objectType: label: Object Name
content: engraving
label: Other Terms
content: engraving; Maritime
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: 10 3/8 in x 8 in; 26.3525 cm x 20.32 cm