🔍 Key Concepts

• 46 CFR Subchapter T requirements for portable fire extinguishers on small passenger vessels • The difference between B-I and B-II extinguisher sizes and capacities • How extinguisher rating letters (A, B, C) and the size/weight (pounds or gallons) relate to USCG classifications

💭 Think About

• Look at each choice and ask: which size/capacity matches the smaller USCG Class B rating used for small passenger vessels? • Consider whether USCG B-I extinguishers are typically lighter/smaller or heavier/larger units on board. • Think about which types (CO₂, foam, dry chemical) are commonly found in the smallest size required by regulation for gasoline/diesel fuel fires.

✅ Before You Answer

• Verify in 46 CFR 25.30 (or current equivalent for small passenger vessels) the minimum size for a B-I extinguisher in pounds or gallons. • Check which of the listed sizes corresponds to the smaller Class B rating (B-I vs B-II). • Confirm that the extinguisher type you choose is specifically approved for Class B (flammable liquid) fires and matches the B-I size range.