The Nigerian Safety Investigation Bureau (NSIB) has commenced an investigation into the collision between the container vessel MV Maersk Valparaiso and the oil tanker MT Lady Martina at Bonny Anchorage in Rivers State. The incident, which occurred on May 20, 2026, has been classified by the Bureau as a Very Serious Marine Casualty.
Investigation Initiation
In a statement issued by its Director of Public Affairs and Family Assistance, Mrs. Funke Adebayo-Arowojobe, the NSIB said it activated its marine occurrence response protocols immediately after receiving notification of the incident. An investigation Go-Team was deployed to Onne and Bonny on May 22 to commence evidence preservation and preliminary investigative activities.
Evidence Collection
The Bureau disclosed that investigators boarded both vessels and conducted interviews with the Masters and key crew members. Operational records and navigational data linked to the incident were secured. Additionally, the Voyage Data Recorder (VDR) and Electronic Chart Display and Information System (ECDIS) data from MV Maersk Valparaiso have been successfully downloaded for forensic and navigational analysis.
International Collaboration
In line with the International Maritime Organisation (IMO) Casualty Investigation Code and international obligations, the NSIB has formally notified the Transport Safety Investigation Bureau (TSIB) of Singapore as a substantially interested State. Collaborative engagement with relevant local and international stakeholders has also commenced as part of the investigation process.
Commitment to Thoroughness
The NSIB assured the public and maritime stakeholders that the investigation would be conducted with professionalism, independence, and thoroughness. The objective is to determine the causal and contributory factors of the occurrence and enhance maritime safety. The Bureau warned against speculation on the probable causes of the incident, noting that investigations are still ongoing.
Safety Recommendations
Any urgent safety concerns identified during the investigation will attract immediate safety recommendations aimed at preventing similar occurrences and strengthening maritime safety standards. The final investigation report will be published upon completion of the exercise in line with national regulations and international obligations.
