Discover the Ytteroyningen: Ratings & Maritime News

The investigation into the fire incident aboard the 'Ytterøyningen' has reached its conclusion, with police confirming the case has been closed. The findings indicate that the blaze was primarily caused by creep currents stemming from a coolant leak in a battery module's cooling system. According to the investigation, the fire ignited within a battery rack when it was actively connected to a battery module. An explosion later followed due to gas accumulation in the battery room, originating from the battery itself. This event, involving relatively new battery technology within the ferry's systems, provided valuable insights, according to authorities. In light of the investigation's results, the Norwegian Maritime Directorate has recommended that alarm systems on bridges be directly linked to battery packs, even when the batteries are not in operation. Notably, the fire was detected by the ferry’s standard fire alarm system. The report has also emphasized the need to evaluate the most effective fire extinguishing methods and their applications. Moreover, adjustments may be required to enhance both electrical safety and overall safety systems aboard vessels. As part of a broader initiative, efforts have been made to boost the knowledge and skills of seafarers in handling incidents involving new energy sources. The Bergen fire brigade has taken proactive measures by launching a 'competence week' aimed at furthering training and awareness among maritime professionals.

In a recent preliminary report released by Corvus, insights into the fire aboard the 'Ytterøyningen' have illuminated potential factors behind the subsequent explosion that occurred on October 11, 2019. The investigation highlights that a seawater fire extinguishing system, installed as an added safety measure, may have inadvertently contributed to the escalation of events following an onboard fire the night before. While the exact cause of the explosion remains undetermined, this report sheds light on the complexities surrounding the incident. For a deeper dive into the findings, visit Corvus Energy's official report on the unfolding situation. Further discussions on the implications of battery safety in maritime operations are also featured in Ship Insight articles.

The investigation into the fire and explosion aboard the 'Ytterøyningen' has concluded, as announced by battery manufacturer Corvus on December 12. The incident, which occurred on October 10 near the Sydnes ferry dock in Kvinnherad, was triggered by a leak from a twisted gasket in the battery pack's cooling system. This malfunction caused an electrical arc, resulting in overheating and a subsequent fire. The precise reason for the gasket's deformation remains unexplained by experts. Initially, the fire alarm system failed to activate in a timely manner because the battery pack had been deactivated when the fire ignited. While firefighting efforts progressed as planned during the first hours, a sudden and powerful explosion occurred early the next morning without any warning. The explosion originated in the battery compartment and sent shockwaves that even damaged the fire truck stationed on the dock, shattering at least one of its lights. Thankfully, there were no individuals on board the ferry at that time. In the aftermath of the incident, investigations suggested that the explosion was likely linked to the newly installed sprinkler system, which utilized salt water to enhance fire protection. Corvus had previously stated in their 2016 guidelines for battery installers that battery units should be stored in rooms equipped with sprinkler systems; however, it was unclear whether these systems were effective with salt water. Furthermore, Corvus emphasized that they did not oversee the installation of this sprinkler system. The Norwegian Maritime Directorate had approved the newly implemented sprinkler system in November 2018. Unlike other electric ferries that predominantly use air-cooled batteries, the 'Ytterøyningen' is notable for being the first hybrid ferry to incorporate water-cooled battery technology, which was certified as type-approved in April 2019. Despite the fire incident, Corvus maintains confidence in the safety of their batteries, asserting they present no greater risks than traditional energy sources used in ferry operations. Following the incident, new air-cooled batteries have been ordered for the 'Ytterøyningen.' The final findings from the police investigation are anticipated to be released by January or February 2020, according to the Kvinnherad sheriff's office.