Chapter One
Infrastructure—Capacity
and System Performance
Matthew Chambers
The U.S. marine transportation system carries domestic and international freight. It
also handles national and global transport of people. The needs of freight and passenger
transportation are many and varied, and the capacity of the system to handle both has been
constrained and congested due to increased need for freight and passenger capacity in different
regions of our nation. Millions of Americans take cruises every year. Maritime vessels
from the around the world call at U.S. ports delivering goods bound for the consumer
market and material for industry. This chapter assesses the lock, port, terminal, vessel, and
passenger capacity and performance of U.S. maritime transportation.