Aboard a cargo vessel, the carbon dioxide supply used in a fixed extinguishing system MUST at least be sufficient for what space(s)?

Correct Answer: Option A — the space requiring the largest amount

Per 46 CFR, fixed carbon dioxide fire extinguishing systems protecting cargo spaces must contain sufficient gas volume for the single space requiring the largest amount. Simultaneous flooding of all spaces is not required since fire scenarios are assumed to be isolated to one compartment.