Fire extinguishers of sizes III, IV, and V are designated as __________.
Official USCG Answer & Rule Citation
Correct Answer: Option C — semi-portable
Under 46 CFR vessel inspection standards, fire extinguishers categorized as sizes III, IV, and V are officially designated as semi-portable extinguishers, meaning they are too heavy for manual carrying but equipped with hoses or wheels for tactical mobility during a fire.
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