The steamer Conestoga was a 2,008 ton, double-planked propeller of 252 ft. x 36 ft. x 16 ft. deep and capable of 8 knots. She was built by Quale & Son of Cleveland for Anchor Line and launched July 6, 1978. She sank on May 22, 1922 outside of Lock 28 of the Old Galop Canal, one mile east of Cardinal, Ontario.

The bow is upstream and near shore with the vessel angled out into the river. Conestoga lies at about a 30 ft. depth with a quick current, but by swimming inside the hull, you escape this current for most of your dive.