Hanjin Shipping Co., Ltd. first called the Port of Seattle in 1979, sharing container terminal acreage with another steamship line.

In 1996, Hanjin Shipping Co., Ltd. chose Seattle’s Terminal 46 for its first dedicated facility. In March 1999, TTI received International Standards Organization (ISO) 9002 registration for stevedore and terminal operations at Terminal 46, Seattle, becoming the first ISO registered terminal in the Port of Seattle as well as the first ISO 9002 registered terminal in the entire Puget Sound area.

The current configuration of Terminal 46 was completed in November 2004, effectively becoming the most modern and technologically advanced facility in the Port of Seattle, featuring three Super Post Panamax cranes capable of lifting 100 LTs and reaching over 22 rows of containers, as well as the latest in OCR and surveillance technologies