Coast Guard Regulations (46 CFR), require a fixed foam extinguishing system on cargo and miscellaneous vessels to meet which of the following requirements?

Correct Answer: Option C — The supply of foam producing materials must be sufficient to operate the equipment for at least 3 minutes for spaces other than tanks.

46 CFR 95.17-5 requires that fixed foam systems on cargo vessels must have a supply of foam-producing materials sufficient to operate the equipment for at least 3 minutes for spaces other than tanks. This ensures adequate coverage to suppress fires in machinery spaces or other designated areas.