Registration takes less than 1 minute.
According to the port, overall throughput increased 4.8 percent for the year.
ILWU says it may take between eight to 10 days to unload a ship because of limits on longshore hiring.
The difference in port volumes can partly be explained by congestion problems out West.
Marine terminal officials agree that future contracts will require ongoing collaboration.
Maersk Line CEO Soren Skou told American Shipper container lines need to adapt to permanent overcapacity, and cited Maersk's network management as the primary driver of bumper profits in recent years.
Economist revised forecasts, predicting lower import growth and a second year of declines in exports.