USS Blueback (museum submarine at OMSI)

The USS Blueback (SS-581), a decommissioned U.S. Navy Barbel-class submarine, is permanently berthed at the Oregon Museum of Science and Industry and operates as a museum vessel open for public tours. Blueback was the last non-nuclear submarine commissioned by the U.S. Navy and was donated to OMSI after decommissioning. The submarine is moored alongside OMSI's riverfront campus and is part of the museum's permanent exhibits.