What is one systematic advantage of having multiple AFFF systems on a vessel?

Having multiple AFFF (Aqueous Film Forming Foam) systems aboard a vessel significantly enhances fire suppression capability. This is because these systems are designed to create a barrier over flammable liquids, preventing the release of flammable vapors while also cooling the surface of a fire. With multiple systems in place, a vessel can ensure that firefighting efforts can be deployed efficiently across different areas, especially in larger vessels where fire can spread rapidly. This redundancy and coverage increase the chances of quickly controlling a fire and minimizing potential damage to the vessel, crew, and cargo.

The other options do not provide direct advantages in the context of fire suppression. While reducing maintenance costs, weight, or fuel consumption might be beneficial overall, they do not specifically address the critical aspect of combating fires effectively as having multiple AFFF systems does. The primary concern in fire safety on vessels is to ensure sufficient and reliable fire suppression capabilities to protect against the unique challenges posed by maritime environments.