Last updated: October 26, 2026
Late on Saturday, October 24, 2026, off the coast of Mayumba, Gabon, an offshore drilling operation turned into an emergency when the Prospector 5 jackup rig suffered a catastrophic loss of stability. The rig encountered a sudden seabed failure during preload activities in the Dussafu Marin permit area, plunging into the water near the MaBoMo production facility. Emergency responders and local authorities mobilized immediately as 110 of the 115 personnel on board were safely rescued while search operations continued for those unaccounted for.
What the Company Announced
Borr Drilling confirmed that its Prospector 5 jackup drilling rig sank at approximately 20:37 local time on Saturday. According to Offshore Magazine, the incident occurred during jacking and preload operations when the rig experienced a punch-through event—an accident where a supporting leg unexpectedly penetrates the seabed. This structural shift caused a severe loss of stability.
Out of 115 personnel on board, 110 individuals were safely accounted for following the incident. Borr Drilling activated its onshore emergency response team and coordinated closely with local authorities, the Gabonese navy, and The Maritime Executive confirmed leaseholder involvement in the response.
Key Financial Details
The Prospector 5 is a 2014-built Friede & Goldman JU-2000E jack-up drilling unit designed for operations in water depths up to 400 feet. The rig was contracted to support operations at the Dussafu Marin permit area, a key asset where BW Energy holds a 73.5% operating interest, alongside Panoro Energy with a 17.5% stake and Gabon Oil Company holding a 9% interest, as detailed by OilPrice.com.
BW Energy recently announced successful appraisal results at Dussafu, identifying approximately 8 million to 9 million barrels of gross recoverable oil to support the MaBoMo Phase 2 development program. That expansion was projected to add up to 20,000 barrels per day of gross oil production at peak rates.
Why the Company Is Doing This
The Prospector 5 had not yet begun drilling and was actively preparing for a planned campaign supporting BW Energy's upcoming development wells. Jackup rigs utilize leg preloading procedures to test and secure foundation stability on the seabed before commencing heavier drilling loads. Punch-through events occur without warning when stiffer sediment layers overlay softer underlying mud, creating deceptive bottom holding power.
Impact on Employees, Customers, and Investors
The humanitarian impact remains the primary focus. While 110 workers were rescued, reports regarding casualties differ. Media reports citing sources familiar with the matter indicated that an Indian national was found dead, with four workers still missing—comprising three Gabonese nationals and another expatriate. However, Gabonese authorities maintained that five individuals remained officially unaccounted for while search operations continued.
On the operational side, BW Energy confirmed that production at the MaBoMo facility was shut down under standard safety protocols for drilling preparations. Panoro Energy noted that there were no reports of damage to production equipment or accidental discharges of harmful substances into the marine environment, with pollution-response resources deployed to protect the coastline.
What Comes Next
Gabon’s Ministry of Petroleum and Gas activated a crisis unit involving the ministry, the navy, state oil company Gabon Oil, BW Energy, and Borr Drilling. Petroleum and Gas Minister Clotaire Kondja ordered intensified search and rescue efforts at sea alongside a formal technical investigation.
The incident introduces uncertainty regarding the development timeline for the Dussafu phase 2 expansion. BW Energy has not yet disclosed whether the loss of the rig will alter future drilling schedules or affect projected production targets.
Frequently Asked Questions
What caused the Prospector 5 rig to sink?
Preliminary reports indicate a punch-through event occurred during leg preload operations, where a support leg unexpectedly penetrated deeper into the seabed, causing a loss of stability.
How many people were on board the rig?
There were 115 personnel on board the Prospector 5 when the incident occurred, of whom 110 were safely accounted for.
Is there any environmental damage from the sinking?
BW Energy and Gabonese authorities confirmed there were no reports of damage to production equipment or accidental discharge of harmful substances into the sea.
Which companies are involved in the Dussafu licence?
BW Energy holds a 73.5% operating interest, Panoro Energy holds a 17.5% stake, and Gabon Oil Company holds a 9% interest.