According to uninspected vessel regulations, what is the minimum number of portable fire extinguishers required on board a 45-foot motorboat having a fixed fire system on board?

Correct Answer: Option B — 2 B-I

Under 46 CFR 25.30-10, motorboats under 65 feet equipped with an approved fixed fire-extinguishing system in the machinery space receive a credit reducing the required number of hand-portable B-I extinguishers to two in that specific space.