Propellers - Signs of History - National Great Lakes Museum, Toledo, Ohio, USA.
N 41° 39.391 W 083° 30.914
17T E 290569 N 4614697
An informative panel - Featuring the history of Ships Screw Propellers. Displayed in front of The National Museum of the Great Lakes - a heritage location on the banks of the Maumee River on the east side of Toledo, Ohio, USA.
Waymark Code: WM11HMN
Location: Ohio, United States
Date Posted: 10/27/2019
Views: 6
An Information Plaque relative to two Ships screw Propellers, of the type used on the Tug Oregon and The vessel Sherwin's Propeller - The giant propeller weighing 21 tons, and 22 feet across.
The Text on the sign reads:-
"For centuries the only way to move a boat across the water was by oar or sails, each of which had its drawbacks. Rowing is difficult, sails need wind, paddle wheels were an improvement in propulsion, but were still inefficient, the bigger the boat, the bigger the paddlewheel needed.
The introduction of the screw propeller in 1840 revolutionized shipping. A single propeller was smaller than two paddlewheels, it was also cheaper to build and more effective.
"The John Sherwin was built in Toledo, in 1958 by the American Shipbuilding Co. for the Interlake Steamship Co. She was named after a senior executive at Picklands Mather & Co. Owners of Interlake.
Originally 690 feet long, The Sherwin was lengthened by 96 Feet in 1973. this straight deck bulk cargo vessel, could carry up to 31,500 gross tons! moving that much boat and cargo takes a big engine - 8,500 Horsepower - and a huge propeller.
The Sherwin's propeller was cast as a single piece I Toledo, and was at the time, the largest single cast bronze piece in existence, the propeller weighs 21 tons and is 22 feet across"
Text Source:- Information Plaque alongside the giant propeller.
Displayed in front of The National Museum of the Great Lakes - a heritage location on the banks of the Maumee River on the east side of Toledo, Ohio, USA.
Group that erected the marker: Toledo Trail
URL of a web site with more information about the history mentioned on the sign: [Web Link]
Address of where the marker is located. Approximate if necessary:
National Museum of the Great Lakes 1701 Front Street Toledo, Ohio 43605
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