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Earnings were buoyed by a 50 percent increase in Maersk Line profit.
PMA neither loaded nor unloaded ships over the weekend, leaving yard and gate operations up to individual terminals.
Businesses large and small and across many sectors share their views on the massive West Coast port cargo delays.
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.