What is the minimum number of portable B-II fire extinguishers required in the machinery space of a 199 GT uninspected motor towing vessel of 8000 B.H.P.?

Correct Answer: Option B — 6

Title 46 CFR mandates portable fire extinguisher requirements based on vessel tonnage and propulsion horsepower. For machinery spaces on motor towing vessels exceeding 1,000 B.H.P., specific schedules dictate the required quantity of B-II portable extinguishers, establishing a minimum of six units for this specific vessel class and power range.