Great Lakes freighter Southdown Challenger Poster
- from our Affiliates
The Great Lakes cement carrier Southdown Challenger was built as the freighter William P. Snyder and presently sails as the cement-carrying barge St. Marys Challenger.
The Great Lakes cement carrier Southdown Challenger was built as the freighter William P. Snyder and presently sails as the cement-carrying barge St. Marys Challenger.