On tank vessels, fully charged fire extinguishers are considered semi-portable when they have a gross weight of more than __________.
Official USCG Answer & Rule Citation
Correct Answer: Option A — 55 pounds
Per 46 CFR, portable fire extinguishers on tank vessels exceeding a gross weight of 55 pounds when fully charged are categorized as semi-portable units, requiring wheeled carriages or specialized mounting due to their excessive manual handling weight.
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