To reach the Port of Houston's Turning Basin, a ship must travel 50 miles along a narrow and twisting channel that passes through Galveston Bay, the San Jacinto River, and Buffalo Bayou. Despite this improbable location, Houston has the world's largest landlocked port. Measured by annual tonnage shipped, the Port of Houston is the second-largest port in the United States. Its docks, wharves, and facilities cover more than 25 miles. The port starts...