The Sadie Ann Education and Research Vessel

The Sadie Ann

The Sadie Ann is a custom-built vessel designed to support freshwater educational programs and research initiatives on the St. Louis River Estuary and the beautiful waters of Lake Superior.

A stable, quiet hybrid-drive catamaran, Sadie Ann has wet and dry research labs, a moon pool, and fold-down, water-level platforms for diving and sampling. The vessel’s upper deck has a multi-purpose cabin with large windows and communication technologies. Heat and air-conditioning in the labs and cabin, as well as a reinforced hull, allow for comfortable and safe operations, even in light winter conditions.

Managed by UW-Superior’s Lake Superior Research Institute, Sadie Ann will be docked in Superior and available for use beginning in July of 2025. Collaborations with educators, researchers, and organizations interested in deepening our appreciation for the ecological and cultural wonders of western Lake Superior are welcome.

Fast Facts

  • 65-foot aluminum catamaran with a beam of 24-feet and a draft of 4.5 feet.
  • United States Coast Guard certified passenger vessel with a capacity of 49 passengers.
  • Parallel hybrid propulsion system designed by Esco Power with John Deere diesel engines and an 86kWh battery pack.
  • Maximum speed of 18 knots (20 MPH) and range of 600 miles at 12 knots.
  • A frame with a safe working load of 3,000 pounds and davit with a 4-foot arm.

But we’ll let Sadie Ann speak for herself. Press play to hear her horn!