Rig: Glomar Java Sea Drillship
Date: October 1983
Operator: Arco
Location: South China Sea
Fatalities: 81
The U.S. drillship GLOMAR JAVA SEA, with 81 persons onboard, capsized and sank in the South China Sea at a position approximately 63 nautical miles southwest of Hainan Island, People's Republic of China and 80 nautical miles east of the Socialist Republic of Vietnam. Prior to the sinking, the GLOMAR JAVA SEA had secured drilling operations due to the severe effects of tropical storm 'LEX' approaching from the east of the drilling site.
At 2348 local time, the Assistant Rig Manager, onboard the drillship, called Global Marine's office in Houston, Texas and reported that the drillship had a 15 deg starboard list of unknown origin and was experiencing 75 knot winds over the bow. Communications were cut off during the conversation, and all attempts to re-establish contact failed. At about 2351 the GLOMAR JAVA SEA capsized and within minutes sank in 317 feet of water. An extensive search was conducted but no survivors were found. A diving expedition found the wreck in an inverted position approximately 1600 feet southwest of the well site. The wreck was searched and 31 of the 36 bodies found were recovered. The remaining 45 persons are missing and presumed dead.
Rig: Ocean Ranger
Date: February 1982
Operator: Mobil Oil Canada Ltd.
Location: Hibernia Field, North Atlantic
Fatalities: 84
Ocean Ranger was designed by Ocean Drilling and Exploration Company, Inc. (ODECO) and constructed in 1976 by Mitsubishi Heavy Industries's Yard in Hiroshima, Japan. The vessel was a self-propelled large semi-submersible design with a drilling facility and living quarters. She was one of the largest semi-submersibles working offshore in the early 1980s.