Five Still Missing After Borr Drilling Rig Sinks Off Gabon

A jack-up drilling rig operated by Borr Drilling capsized and sank off the coast of Gabon on October 24 while being positioned ahead of a drilling campaign for BW Energy, leaving five workers unaccounted for after a search-and-rescue effort that recovered 110 of the 115 people who were aboard. Two days after the incident, Gabonese authorities and Borr Drilling were still searching for the missing workers, while reports on casualties diverged between outlets.

What Borr Drilling Says Happened

The rig, Prospector 5, was carrying out preloading — a routine procedure in which a jack-up’s legs are pushed into the seabed to test their footing before drilling begins — in the Dussafu license area when, according to Borr Drilling, a spudcan on one of its legs punched through the seabed. The sudden shift tipped the rig and caused it to lose stability, according to the company’s account reported by Maritime Executive and World Oil. The incident occurred at around 8:37 p.m. local time. Borr Drilling’s own update on October 26 listed five people as unaccounted for and did not confirm any fatalities, a position Gabon’s government has maintained as well.

Conflicting Reports on Casualties

Accounts of the incident’s toll have varied by outlet. World Oil reported that one worker was found dead and four remained missing. Reuters, citing three unnamed sources, reported that the deceased worker was an Indian national. Gabon’s Ministry of Petroleum and Gas, however, has continued to describe the toll as five people missing without confirming a death, and Borr Drilling’s public updates have matched that framing. The discrepancy underscores that the final casualty count has not been independently confirmed as of this report.

Response and Operational Fallout

Gabon’s oil ministry set up a crisis unit and directed the national navy to reinforce the search-and-rescue operation. BW Energy, which had contracted Prospector 5 to drill in its Dussafu license offshore Gabon, halted production at its nearby MaBoMo platform as a precaution; no damage to other facilities or hydrocarbon discharge has been reported. The African Energy Chamber issued a statement expressing solidarity with Gabon and the families of the missing workers. The cause of the spudcan failure that tipped the rig has not yet been determined, and Borr Drilling has said an investigation is under way.

A Known Risk in Jack-Up Operations

Jack-up rigs are mobile offshore drilling platforms that stand on retractable legs resting on the seabed, and preloading — deliberately loading extra weight onto the legs before drilling to check that the seabed can bear the rig safely — is standard practice precisely because uneven or soft seabed can cause a leg to punch through unexpectedly, a failure mode the industry calls a “leg punch-through.” Such incidents are uncommon but not unprecedented in offshore drilling, and regulators and operators typically review site surveys and loading procedures after one occurs. Dussafu, where BW Energy has produced oil since 2018, sits in shallow-to-moderate water depths off Gabon’s southern coast near Mayumba.

Sources

• Maritime Executive, “Borr Drilling Jackup Loses Stability and Sinks off Gabon,” October 25-26, 2026 — incident description, company account.
• World Oil, “One dead, four missing after Borr Drilling’s Prospector 5 rig sinks offshore Gabon,” October 25, 2026 — casualty reporting, rescue numbers.
• Offshore Energy, “Rig incident: 110 rescued, 5 still missing after Borr Drilling’s jack-up sinks off Gabon coast,” October 25, 2026 — rescue figures, timeline.
• African Energy Chamber, statement on the Prospector 5 incident, October 2026 — industry reaction.
• Borr Drilling, public incident updates, October 25-26, 2026 — company position on casualties and response.

Illustrative image. Photo: Richard Bartz, CC BY-SA 2.5, via Wikimedia Commons — source