Robert J. Bowman has written a nice short piece on the turmoil in ports due to changes in the ocean shipping industry (and inland, as well, we should add). Ultimately there should be more capacity with less utilization, but how fast a port can work in the time it has the ship will be the most important part of efficiency. Time will tell if the in-port efficiency gains will pay for the lengthened idle times, and cover the risk of frequent variability of visit schedules.
Source: Can Ports Keep Up With the Changing Needs of Container Lines?
Source: 
Supply Chain and Logistics 