The Duluth Aerial Lift Bridge is a span-drive configuration movable lift bridge constructed in 1901-1905 and modified in 1929.
TUGBOAT ESSAYONS ENGINE https://en.wikipedia.org/wiki/Essayons_(1908_tugboat)
Essayons was a tugboat of the United States Army Corps of Engineers. Her mission with the Corps was to support the installation of breakwaters and piers, and the dredging of harbors on Lake Superior. She was built in 1908 and served with the Army until 1949, when she was sold to the Zenith Dredge Company. Essayons continued her support of port construction and maintenance under her new owner until the mid-1960s. In 1994 she was sold again, this time to a local businessman, who hoped to convert her into a floating Bed and Breakfast. This plan never came to fruition and she sank at her moorings in Duluth Harbor in 2009.
THE KAHLENBERG OIL ENGINE https://www.harveyhadland.com/k_berg01.htm
Seventy-horsepower Kahlenberg engine, built 1938 on display at the Lake Superior Marine Museum adjacent to the bridge.
A dry base, two-cycle semi-diesel popular as a choice for fish tug power following the steam era and prior to the introduction of highspeed full diesels.
As of 2014, two working boats are known to continue use of their original Kahlenberg engines on the Great Lakes: the WILLIAM G., still used for fishing by Eric Nelson, Sheboygan, Wisconsin, and the ELSIE J. used as a charter and cruise boat at South Haven, Michigan, by Bob and Kathy Jensen.
TUGBOAT ESSAYONS ENGINE https://en.wikipedia.org/wiki/Essayons_(1908_tugboat)
Essayons was a tugboat of the United States Army Corps of Engineers. Her mission with the Corps was to support the installation of breakwaters and piers, and the dredging of harbors on Lake Superior. She was built in 1908 and served with the Army until 1949, when she was sold to the Zenith Dredge Company. Essayons continued her support of port construction and maintenance under her new owner until the mid-1960s. In 1994 she was sold again, this time to a local businessman, who hoped to convert her into a floating Bed and Breakfast. This plan never came to fruition and she sank at her moorings in Duluth Harbor in 2009.
THE KAHLENBERG OIL ENGINE https://www.harveyhadland.com/k_berg01.htm
Seventy-horsepower Kahlenberg engine, built 1938 on display at the Lake Superior Marine Museum adjacent to the bridge.
A dry base, two-cycle semi-diesel popular as a choice for fish tug power following the steam era and prior to the introduction of highspeed full diesels.
As of 2014, two working boats are known to continue use of their original Kahlenberg engines on the Great Lakes: the WILLIAM G., still used for fishing by Eric Nelson, Sheboygan, Wisconsin, and the ELSIE J. used as a charter and cruise boat at South Haven, Michigan, by Bob and Kathy Jensen.
© David D. Dolton