Tidewater Holdings, Incorporated operates as a multi-modal transportation company. It handles grain, refined petroleum products, wood and wood products, and liquid and dry fertilizers. The company also provides harbor services. In addition, it operates terminals for handling various cargos and intermodal connections, boats and specialty barges. Further, the company sells flat decks, covered hoppers, and house barges; and tugboats-towboats, and line handling winches. Furthermore, it owns a shipyard, and engages in new construction and repair works. Tidewater Holdings, Inc. was founded in 1932 and is based in Vancouver, Washington with terminals in Vancouver, Pasco, and Clarkston, Washington; Boardman and Umatilla, Oregon; and Morrow and Wilma.