The Ottawa was a tugboat that sank in Lake Superior off the coast of Red Cliff in Russell, Bayfield County, Wisconsin.

[1] Ottawa, originally named Boscobel, was built in Chicago, Illinois.

[2] Originally the boat was used for rafting logs on Lake Michigan, but in 1901 was bought (and renamed) by the Reid Wrecking Company, based in Sarnia, Ontario.

The ship's first mate and other members of the crew launched the lifeboat and went to land in order to get help.

Theories include that the fire was a result of spontaneous combustion in the ship's coal bunkers, which contained 130 tons of fuel.