Cal Dive International, Inc. operates as a marine contractor providing manned diving, pipelay, and pipe burial services to the offshore oil and natural gas industry. Its services include saturation, surface, and mixed gas diving services. The company offers diving support services, such as construction, inspection, maintenance, repair, and decommissioning of offshore production and pipeline infrastructure on the Gulf of Mexico Outer Continental Shelf. It also provides these services directly or through partnering relationships in international offshore markets, such as the Middle East and Trinidad. The company’s customers include oil and natural gas producers, pipeline transmission companies, and offshore engineering and construction firms. As of May 31, 2006, it owned and operated a fleet of 26 vessels, including 23 surface and saturation diving support vessels, as well as 3 shallow water pipelay vessels. The company was founded in 1975 and is headquartered in Houston, Texas. Cal Dive International, Inc. is a wholly owned subsidiary of Helix Energy Solutions Group, Inc.