What type of extinguisher is suitable for electrical fires on a ship?

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Electrical fires on a ship require a non-conductive extinguisher that is rated for electrical fires. Extinguishers labeled Class C, or ABC extinguishers that are rated for electrical fires, are suitable because their media do not conduct electricity and won’t energize live equipment or put you at risk. Water-based extinguishers are not appropriate for live electrical fires because water conducts electricity and can cause shocks or spread the current. Extinguishers designed for metal fires or foam extinguishers (which are typically water-based) are not suited to energized electrical equipment. If it’s safe to do so, de-energize the equipment before fighting the fire, and use the appropriate non-conductive extinguisher from a safe distance.