Cal Dive International provides marine construction services to offshore oil and gas industries throughout the world. The company performs a wide range of operations, such as installation and burial of marine pipelines, conventional and reel pipelaying and derrick barge activities. Its derrick services include installation and removal of offshore platforms and topsides, drilling rigs modules and other structures. Horizon also performs dive and support services. The company s operating fleet consists of more than 12 vessels and barges. Cal Dive International was founded in 1996 and is based in Houston.