In 1997, Edmund Gann partnered with Tri-Marine International, Inc. of Singapore and Thai Union International of Bangkok to create Tri-Union Seafoods LLC which acquired the San Diego, California based canned tuna processing and packing company, Chicken of the Sea.

The investment group Tri-Union Seafoods LLC, made up of three partners:

• Thai Union International Inc., a Thai conglomerate based in Bangkok and the then-largest tuna packer in Asia and second largest in the world
• Edmund A. Gann, American owner of Caribbean Marine Service, Co., Inc., a tuna-fishing fleet
• Tri-Marine International, Inc., a global trading company formed in Singapore in 1972 dealing in tuna and tuna products headed by Renato Curto, president and majority shareholder.

The new owners changed the name of Van Camp Seafood Company to Chicken of the Sea International. In 2000, Tri-Marine International Inc and Edmund A. Gann sold their 50 percent interest in Chicken of the Sea to Thai Union International, Inc., leaving Thai Union the sole owner of the company. Chicken of the Sea International and Tri-Union International LLC merged into one company, still called Chicken of the Sea International.