Horizon Lines, Inc., the nation's leading domestic ocean shipping and integrated logistics company, announced that it will add regularly scheduled vessel container service between Tampa, Florida and Puerto Rico.

A vessel call at the Port of Tampa will be added to the carrier's Gulf Express Service (GAX), currently operating a fixed-day, bi-weekly schedule between Houston, Texas and San Juan.

The Tampa service is scheduled to commence with the arrival of the Horizon Discovery on October 4th.