The Nigerian Safety Investigation Bureau (NSIB) has commenced a forensic investigation into the collision between the container vessel MV Maersk Valparaiso and the oil tanker MT Lady Martina at Bonny Anchorage in Rivers State, following the download of Voyage Data Recorder (VDR) and Electronic Chart Display and Information System (ECDIS) data from the vessel for navigational analysis.
The bureau’s Director of Public Affairs and Family Assistance, Mrs Funke Adebayo Arowojobe, explained that in line with the International Maritime Organisation (IMO) Casualty Investigation Code and international obligations, NSIB had formally notified the Transport Safety Investigation Bureau (TSIB) of Singapore as a substantially interested State.
The incident, which occurred on May 20, 2026, has been classified by the bureau as a Very Serious Marine Casualty (VSMC).
She also said that NSIB activated its marine occurrence response protocols immediately after receiving notification of the incident, noting that the investigation Go-Team was deployed to Onne and Bonny on May 22 to commence evidence preservation and preliminary investigative activities.
The bureau disclosed that investigators boarded both vessels and conducted interviews with their masters and key crew members, while operational records and navigational data linked to the incident were secured.
Also, the director stressed that the bureau had commenced collaborative engagement with relevant local and international stakeholders as part of the investigation process, assuring the public and maritime stakeholders that the investigation would be conducted with professionalism, independence and thoroughness, stressing that the objective was to determine the causal and contributory factors of the occurrence and enhance maritime safety.