All About Global-Santa-Fe Corporation, used to trade on the NYSE as GSF and was an offshore oil and gas drilling contractor, which owned or operating a fleet of 59 marine drilling rigs.
On 23 July 2007, a merger between GlobalSantaFe and larger rival Transocean occurred. GlobalSantaFe was the successor to two companies, Global Marine Inc. and Santa Fe International Corporation, which merged in November 2001. I personally used to work with Global Marine. All About Global-Santa-Fe