Two Seattle Port commissioners Friday toured Port of Tacoma facilities as guests of the Port of Tacoma Commission as the two traditionally rival ports begin efforts to attract new business to both Puget Sound ports.

The two ports have been rivals for decades, stealing each other’s customers from time to time, but seldom generating larger volumes by attracting new traffic from outside the region.

New competition from both Vancouver and Prince Rupert, B.C., in Canada has also caused cargo diversions from Puget Sound ports.

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