What is the quickest way to attack an engine space fire according to standard practices?

Using CO2 extinguishers is recognized as one of the most effective methods for quickly handling engine space fires. CO2 is particularly suitable for this type of fire because it displaces oxygen, which is necessary for combustion. Engine spaces often contain flammable liquids and materials, and since CO2 does not leave any residue behind, it minimizes the potential for damage to sensitive equipment, which is particularly important in confined spaces.

This option is favored in scenarios involving electrical fires as well, as CO2 is non-conductive and safe to use around energized systems. The rapid application of CO2 can quickly suppress flames, allowing for effective control of the fire before it spreads.

Other fire extinguishing agents such as water may not be ideal in engine spaces due to the risk of spreading the fire or creating additional hazards, particularly when dealing with flammable liquids or electrical fires. Foam extinguishers, while helpful for certain types of fires (particularly those involving flammable liquids), may not penetrate the engine's complexities as effectively. Dry chemical extinguishers have their utilities as well but could leave corrosive residue that may damage equipment in the confined engine room environment.