Houston-based Kirby Corporation is a major player in the domestic tank barge industry in the United States. Its Marine Transportation segment provides marine transportation service and towing vessel service, operating tank barges throughout the Mississippi River System, on the Gulf Intracoastal Waterway, coastwise along three United States coasts, and in Alaska and Hawaii. The company transports petrochemicals, black oils, refined petroleum products, and agricultural chemicals by tank barges. Additionally, Kirby operates offshore dry-bulk barges and tugboat units that engage in the offshore transportation of dry-bulk cargos along the United States coastal trade. Kirby Corporation owns and operates a fleet of 1,037 inland tank barge, approximately 277 inland towboat, 29 coastal tank barge, 27 coastal tugboat, 4 offshore dry-bulk cargo barge, 4 offshore tugboat, and 1 docking tugboat. Kirby Corporation's Distribution and Services segment sells after-market service and genuine replacement parts for engines, transmissions, reduction gears, electric motors, drives, and controls, electrical distribution and control systems, energy storage battery systems, and related oilfield service equipment. The company also rebuilds component parts or diesel engines, transmissions and reduction gears, and related equipment used in oilfield services, marine, power generation, on-highway, and other industrial applications. Furthermore, Kirby rents generators, industrial compressors, high capacity lift trucks, and refrigeration trailers. It also manufactures and remanufactures oilfield service equipment, including pressure pumping units, as well as manufacturers electric power generation equipment, specialized electrical distribution and control equipment, and high capacity energy storage/battery systems. The company serves various companies and the United States government. Kirby Corporation, formerly known as Kirby Exploration Company, Inc., was founded in 1921 and changed its name to Kirby Corporation in 1990. As of December 31, 2022, the company is the leading provider of inland tank barge transportation in the United States, and is a publicly traded company listed on the New York Stock Exchange (NYSE: KEX).