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Guards (steamboat)
Guards on a steamboat were extensions of the main deck out from the boat’s main hull. Guards were originally adopted for side-wheel steamboats to protect the paddle wheels and to provide a mounting point for the outer ends of the paddle wheel shafts. The main deck planking extended out over the guards, and when a steamboat was fully loaded, and sunk deeply in the water, it often appeared that the edges of the guards marked the line of the hull. The size of the guards was governed, on a sidewheeler, by the width of the paddle-wheels and their housings. On early steamboats operating on the Mississippi and Ohio Ohio () is a state in the Midwestern region of the United States. Of the fifty U.S. states, it is the 34th-largest by area, and with a population of nearly 11.8 million, is the seventh-most populous and tenth-most densely populated. The sta ... rivers the overall width of the vessel, counting the guards, did not exceed more than about one-third of the hull width. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steamboat Diagram Cross-section 1861
A steamboat is a boat that is propelled primarily by steam power, typically driving propellers or paddlewheels. Steamboats sometimes use the prefix designation SS, S.S. or S/S (for 'Screw Steamer') or PS (for 'Paddle Steamer'); however, these designations are most often used for steamships. The term ''steamboat'' is used to refer to smaller, insular, steam-powered boats working on lakes and rivers, particularly riverboats. As using steam became more reliable, steam power became applied to larger, ocean-going vessels. Background Limitations of the Newcomen steam engine Early steamboat designs used Newcomen steam engines. These engines were large, heavy, and produced little power, which resulted in an unfavorable power-to-weight ratio. The Newcomen engine also produced a reciprocating or rocking motion because it was designed for pumping. The piston stroke was caused by a water jet in the steam-filled cylinder, which condensed the steam, creating a vacuum, which in turn caused ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
