Hornbeck Offshore Services Inc or Hornbeck was incorporated under the laws of the State of Delaware in 1997. The Company, through its subsidiaries, operates offshore supply vessels, or OSVs, multi-purpose support vessels, or MPSVs, and a shore-base to provide logistics support and specialty services to the offshore oil and gas exploration and production industry, mainly in the U.S. Gulf of Mexico, or GoM, Latin America and select international markets. It operated in two segments, Upstream segment and a Downstream segment. The Upstream segment, operated its vessels predominately in the U.S. GoM. Upstream operations also includes a shore-base support facility located in Port Fourchon, Louisiana. Downstream segment, it previously operated nine double-hulled tank barges and nine ocean-going tugs and provided marine transportation, distribution and logistics services mainly in the northeastern United States, GoM, Great Lakes and Puerto Rico. On August 29, 2013, the Company closed the sale of substantially all of the assets and business of our Downstream segment's tug and tank barge fleet to Genesis Marine, LLC, an affiliate of Genesis Energy L.P. It's customers are generally limited to large, independent, integrated or nationally-owned energy companies. The Company's operations are subject to a variety of federal, state, local and international laws and regulations regarding the discharge of materials into the environment or otherwise relating to environmental protection.