The top of a Great Lakes bulk carrier's bilge tank; a water balast tank forming the bottom of a freighter's hull.

View pictures related to boating at Wisconsin Historical Images.

Learn More

Dictionary of Wisconsin History

Explore more than 1,600 people, places and events in Wisconsin history.

[Source: "Glossary." Wisconsin's Great Lakes Shipwrecks (http://www.wisconsinshipwrecks.org/)]