This BTS special report examines historical U.S. maritime trends, changes in U.S. trading partners, and current U.S. marine trade patterns. More specifically, it compares container vessel calls, container vessel capacity, and the average deadweight tonnage of vessels calling at U.S. Pacific Coast seaports and, increasingly, along the U.S. Atlantic and Gulf Coasts. The report highlights the typical container port and terminal construction projects recently completed along the Pacific Coast by the United States, China, and other U.S. trading partners. In addition, the report shows the U.S. population center, which has a historical relationship with the location and cargo flow of major U.S. seaports