Deep Down's customers include BP Petroleum, Royal Dutch Shell, Exxon Mobil Corporation, Devon Energy Corporation, Chevron Corporation, Anadarko Petroleum Corporation, Marathon Oil Corporation, Kerr-McGee Corporation, Nexen Inc., BHP, Amerada Hess, Helix, Oceaneering International, Inc., Subsea 7, Inc., Transocean Offshore, Diamond Offshore, Marinette Marine Corporation, Acergy, Veolia Environmental Services, Noble Energy Inc., Aker Kvaerner, Cameron, Oil States, Dril-Quip, Inc., Nexans, Cabett, JDR, and Duco, among others.