The Nigerian Safety Investigation Bureau (NSIB) has successfully recovered and downloaded critical navigational data from the container vessel MV Maersk Valparaiso as part of its ongoing investigation into a collision that occurred at Bonny Anchorage in Rivers State on May 20, 2026. The incident involved the vessel and the oil tanker MT Lady Martina.
Investigation Details
In a statement released yesterday by the Director of Public Affairs and Family Assistance at NSIB, Funke Adebayo-Arowojobe, the incident was classified as a “very serious marine casualty.” Investigators have retrieved data from the vessel’s Voyage Data Recorder (VDR) and Electronic Chart Display and Information System (ECDIS) for detailed forensic and navigational analysis.
Response and Evidence Collection
The NSIB activated its marine occurrence response protocols and deployed an investigation Go-Team to Onne and Bonny on May 22, 2026, immediately after being notified of the collision. The investigative team boarded both vessels and commenced evidence preservation procedures, including interviews with the Masters and key crew members. They also secured operational records and navigational information relevant to the incident.
International Collaboration
In line with the International Maritime Organization (IMO) Casualty Investigation Code and Nigeria’s international obligations, the NSIB formally notified the Transport Safety Investigation Bureau (TSIB) of Singapore as a substantially interested state. Collaborative engagement has also commenced with relevant local and international stakeholders connected to the investigation.
Commitment to Professionalism
The NSIB reassured maritime stakeholders and the international shipping community that the investigation would be conducted with professionalism, independence, and thoroughness. The sole objective is to identify the causal and contributory factors behind the collision and to improve maritime safety standards.
The statement emphasized: “The sole objective is to establish the causal and contributory factors of the occurrence and to promote enhanced maritime safety. The investigation remains ongoing. It would be premature to speculate on the probable causes at this stage. The bureau therefore strongly urges the public and all stakeholders to refrain from speculation while the investigative process continues.”
Final Report
The NSIB maintained that the final investigation report will be published upon completion of the investigation, in accordance with applicable national regulations and international obligations.



