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Storm in the Gulf of Mexico Forced Evacuation of Offshore Drilling Rig Near Lake Charles, Louisiana. Investigators Assess Foundation Deterioration.
An Elevated Vessel Was Subjected to Strong Winds and High Waves During a Storm in the Gulf of Mexico, Resulting in Its Capsizing, According to the National Transportation Safety Board (NTSB) on Last Wednesday. The Damages to the Vessel and Cargo Were Estimated at US$ 6.9 Million.
On November 20, 2022, It Was Reported That the Elevator L/B Robert Was Leaning Next to a Stationary Oil Platform in the Gulf of Mexico, Located About 80 Miles Southeast of Lake Charles, Louisiana. The Crew Had Evacuated the Elevated Vessel Two Days Earlier Due to Forecasts of Bad Weather in the Area, Leaving It Out of the Water and Unattended. There Were No Reports of Injuries or Pollution in the Gulf of Mexico‘.
The Captain Makes the Decision to Evacuate the Elevated Vessel
The Captain of the Lifting Boat, L/B Robert, Decided to Evacuate the Vessel on November 17, 2022, Due to Adverse Weather Conditions. The Forecast Waves Would Exceed the Operational Limits of 8 Feet of draft and 15 Feet of the Lifting Boat, Representing a Risk to the Crew and Personnel of the Oil Platform in the Gulf of Mexico.
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The Evacuation and the Guidance of Shoreside Management Personnel
When the Crew Evacuated the L/B Robert, They Left an Air Space About 25 Feet Above the Water Surface, Following the Guidance of Shoreside Management Personnel. This Measure Was Crucial in Maintaining the Vessel’s Resistance to Capsizing from the Combined Forces of Wind and Waves, Which Exceeded Weather Forecasts at the Time of Evacuation.
Impact of Capsizing Forces on the Vessel’s Legs
The Capsizing Forces from the Wind and Waves Were Transferred from the Legs of the Vessel to the Platforms. This Caused the Deterioration of the Seafloor Base Around, Leading Investigators to Determine That the Deteriorated Foundation of the Seafloor Under the Port Side Leg Gave Way, Resulting in the Vessel’s Displacement and Submergence of the Deck Edge.
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