🔍 Key Concepts

• 46 CFR Part 28 – Requirements for fire extinguishing equipment on commercial fishing vessels • How vessel length and total brake horsepower (BHP) affect the number and size (class/size) of extinguishers required • Difference between B-II and smaller B-I extinguishers and why machinery spaces often require larger units

💭 Think About

• First, think about where in 46 CFR you would find a table that directly links fishing vessel length and engine BHP to the minimum number of B-II extinguishers in the machinery space. • Ask yourself: for a vessel over 65 feet but less than 79 feet, with about 600 BHP, does the regulation usually call for more than two B-II extinguishers in the machinery space, or is the requirement closer to the lower or middle of the answer range? • Consider whether any fixed fire-extinguishing system (like CO₂) in the machinery space would change the number of required portable B-II extinguishers—and whether the question implies the presence of such a system.

✅ Before You Answer

• Locate the specific table in 46 CFR that lists fire extinguisher requirements for commercial fishing vessels by length and BHP. • Verify in that table the exact row for a vessel around 75 feet and 600 BHP, focusing on the machinery space requirement for portable B-II extinguishers. • Confirm whether the requirement is for B-II units only, or a combination of B-I and B-II, so you don’t mix total extinguishers with the specific B-II count asked in the question.