Borr Drilling’s Prospector 5 Jack‑Up Rig Sinks Off Gabon

Overview

• The Prospector 5 sank while conducting jacking and preload operations to set its legs for a planned drilling campaign, and 110 of 115 people on board have been accounted for with five still missing and being sought by rescue teams.
• Borr Drilling reported preliminary evidence of a punch‑through, which occurs when a leg or pad unexpectedly penetrates a weak seabed layer and undermines the rig’s bearing capacity, leading to loss of stability.
• The rig was owned and operated by Borr and contracted to support BW Energy’s offshore work; Panoro Energy and other field stakeholders have temporarily halted production at the affected field as a precaution.
• Companies involved say there are no confirmed accidental discharges so far, but environmental monitoring and damage inspections are under way given the rig’s sinking and the offshore location.
• Formal investigations and safety reviews are starting and are likely to involve Borr’s emergency team, local authorities, the operator BW Energy and classification societies to determine cause and future safety steps.