In the Shipment Filters panel, click Milestones.

For the Event select Discharge. 

For the Type select Estimated Time. 

For the Logic select is between. 

Select Today on the left side of the calendar.

Click the Add Filter button.

Click Routes.

For the Location select Any Stop. 

For the first Type select Location Name. 

For the Logic select is. 

Select the name of the port.

Click Add Criteria.

For the second Type select Stop Type.

Select is.

Select Port of Discharge (this ensures that it is for shipments with that port as the port of discharge, not port of loading).

The Shipments List is sorted by the selected criteria.