Before using a fire extinguisher, crew members should:

Understanding the instructions and the type of fire involved before using a fire extinguisher is crucial for effective and safe firefighting. Different extinguishers are designed for specific classes of fires, such as those involving flammable liquids, electrical equipment, or ordinary combustibles. Familiarity with these classifications ensures that crew members select the appropriate extinguisher for the situation, which increases their chances of successfully controlling or extinguishing the fire.

Furthermore, reading and comprehending the instructions on the extinguisher provides essential steps on how to operate it properly. This knowledge helps prevent accidents and ensures that crew members can act decisively and effectively when faced with a fire emergency. Understanding the situation also enables crew members to assess the fire's size and intensity, helping them decide whether to attempt extinguishing the fire or to evacuate and call for professional help.

Taking time to ensure this understanding is fundamental to the safety of everyone on board, rather than rushing into use without thinking through the implications.