Boston beschikt over een van de beste natuurlijke havens ter wereld.
The port of Boston, located in one of the best natural harbors in the world, was once the premier port in the United States and still retains considerable importance.
A deepwater channel connects waterfront terminals with the open ocean, and there are about 40 km (about 25 mi) of docking space in the inner harbor.
Petroleum products and sugar are the largest imports; grain, iron, and steel are the principal exports.
Container cargo terminals, first added in the 1970s, have greatly increased port activity. In the early 1990s containerized general cargo constituted more than 90 percent of all cargo handled.