On March 2, an incident aboard the Silja Serenade, a cruise ship traveling from Finland to Stockholm, led to an extended stop in Mariehamn due to safety concerns. The Finnish Accident Investigation Agency announced that it would initiate a safety investigation following reports that an aluminum cargo began smoking on the ship's car deck. The situation escalated as the heating reaction of the cargo necessitated a complex firefighting and cooling operation on board, and subsequently at the port of Mariehamn. Compounding the danger was the proximity of the aluminum cargo to another vehicle carrying battery cargo, creating a potential risk for a much larger disaster.

Investigator Mirva Salokorpi emphasized that this investigation aims to assess the entire sequence of events leading up to the dangerous situation, particularly focusing on the labeling and transportation of hazardous recycling materials on passenger ferries. The investigation will scrutinize safety protocols to prevent similar incidents in the future, providing critical insights into the shipping industry's handling of dangerous goods. The duration of the investigation has not yet been specified, highlighting the ongoing concern for maritime safety amidst the transport of hazardous materials.

This incident reflects broader safety issues within the maritime transport sector, particularly as it pertains to the transport of potentially hazardous materials. As safety regulations are established and enforced, incidents like these prompt a reevaluation of existing protocols to ensure the safety of passengers and crew members, thereby influencing future legislation and operational standards in maritime transport.