🔍 Key Concepts

• 46 CFR Subchapter T requirements for fire protection on small passenger vessels • The difference between Class A and Class B/C fires and where each type of extinguisher is typically located • Special requirements for extinguishers in or near machinery spaces (engine rooms/propulsion spaces)

💭 Think About

• Ask yourself: What type of fire is most likely to occur in a propulsion machinery space—combustible solids (wood/upholstery) or flammable liquids and gases (fuel, oil)? • Think about why the extinguisher is located just outside the machinery space instead of inside it. How does that affect the type and size (rating) needed? • Compare the ratings in each answer choice: Which is clearly intended for flammable liquids and has a larger capacity appropriate for engine-room hazards?

✅ Before You Answer

• Verify which fire class (A, B, or C) is primarily required for machinery space protection on passenger vessels of this size under 46 CFR. • Check the minimum size/rating the regulations specify for extinguishers protecting propulsion machinery spaces—not just any space. • Confirm that the answer you select matches both the correct fire class and the minimum rating listed for that specific location (just outside the exit of the propulsion machinery space).