Space shuttle external tank ET-134 is on a sea voyage from Michoud Assembly Facility in New Orleans to the Kennedy Space Center in Florida.
The Intracoastal Waterway is a 3,000-mile waterway along the Atlantic and Gulf coasts of the United States. Some lengths consist of natural inlets, salt-water rivers, bays, and sounds; others are man-made canals. It provides a navigable route along its length without many of the hazards of travel on the open sea.
This is an image from space showing part of the Intracoastal Waterway that runs through Louisiana.
Image credit: NASA
Follow the "Sailing With NASA" blog and the ET-134 journey: