Many factors influence port capacity, which is a measure of the
maximum throughput that a port and its terminals can handle over a given time period, in tons, twenty-foot equivalent units (TEU), or other units, such as
barrels of liquid bulk (e.g., crude petroleum) or number of vehicles handled.
Maximum throughput, or capacity, can be set by physical constraints, including
the physical size (acreage) of terminals, length of berths, depth of access
channels, and the amount and type of cargo handling equipment (e.g., container
cranes). Port capacity can also be influenced by operational factors not
currently measured in this program (e.g., gate hours) and economic factors,
including labor availability and cost. These factors are typically proprietary,
making them less likely to be available for public use. Port features that
influence capacity are summarized in the table below.