🔍 Key Concepts

• 46 CFR Part 25 – Requirements for fire extinguishing equipment on uninspected vessels • How the required number of B-I portable extinguishers changes when a fixed fire extinguishing system is installed in the machinery space • The length category for a 45-foot motorboat in the extinguisher requirement table

💭 Think About

• First, decide which length range in the regulation table a 45-foot motorboat falls into. How many B-I extinguishers are normally required in that range without a fixed system? • Next, check the note or separate column in the table that applies when a fixed fire extinguishing system is fitted. How does that change the number of required B-I extinguishers? • Compare that adjusted number to the answer choices and see which one exactly matches the regulation requirement for that length and configuration.

✅ Before You Answer

• Confirm you are looking at uninspected motorboats, not inspected vessels or sailing vessels • Verify the correct length bracket for 45 feet (for example, “40 feet to not more than 65 feet”) in the regulation table • Verify the specific reduction rule or column for boats with a fixed fire extinguishing system, and apply it correctly to the normal requirement.