The interior of NASA’s Pegasus barge shows its cavernous cargo bay, designed to carry the massive Space Launch System (SLS) rocket stages from New Orleans to Florida. The reinforced hull and climate-controlled enclosure protect rocket components from Gulf Coast humidity and salt exposure during transit. Originally built in 1999 to move Space Shuttle external tanks, Pegasus was lengthened and upgraded in 2014 to accommodate the larger Artemis-era core stages. The vessel remains a vital part of NASA’s logistics network, connecting Michoud Assembly Facility with Kennedy Space Center via a 900-mile inland and coastal route.

The NASA transport barge Pegasus is shown moored at the Michoud Assembly Facility in New Orleans, Louisiana. Designed to carry the massive core stages of the Space Launch System (SLS), Pegasus features a climate-controlled cargo hold and a retractable bow door to accommodate the rocket’s 212-foot-long components. Originally used to move Space Shuttle external tanks, the vessel was extensively refitted and lengthened in 2014 to support NASA’s Artemis program. It remains a key link between NASA’s Gulf Coast manufacturing site and the Kennedy Space Center in Florida.

The NASA barge Pegasus moored along the Intracoastal Waterway near New Orleans, Louisiana. Originally built in 1999 to carry Space Shuttle external tanks from Michoud to Kennedy Space Center, the vessel was later extended and modernized to transport the massive core stages of NASA’s Space Launch System (SLS). Operated by the U.S. Maritime Administration and NASA’s logistics teams, Pegasus remains a vital link between Gulf Coast manufacturing and Florida launch operations for Artemis missions.

Nasa's Pegasus barge that will carry fuel tanks for the Space Launch System to other NASA facilities for testing and launches.

More Info:
NASA Infographic: https://www.nasa.gov/exploration/systems/sls/multimedia/barge-pegasus-infographic
Pegasus Barge Fact Sheet: https://www.nasa.gov/sites/default/files/atoms/files/sls_pegasus_fact_sheet_508_final_04212017.pdf

A barge on the Minnesota River in Savage Minnesota.