🔍 Key Concepts

• Portable fire extinguisher classification system (letters vs numbers) • Difference between class of fire (A, B, C, etc.) and physical size/capacity rating • Meaning of combinations like B-II on Coast Guard-approved extinguishers

💭 Think About

• What does the letter in a designation like B-II usually refer to in firefighting terminology? Think about the type of materials burning. • What does the number or Roman numeral typically indicate about an extinguisher—its location, its size, or something else that can be measured? • On a vessel, how is location of extinguishers normally shown—by a code on the extinguisher itself, or by markings/signs on the bulkhead and in the safety plan?

✅ Before You Answer

• Verify what the letter part (A, B, C, D, K) stands for in standard fire classifications. • Verify what the number or Roman numeral part (I, II, III, etc.) represents in USCG/Coast Guard extinguisher ratings—pay attention to capacity/size, not where it’s mounted. • Confirm how the location aboard is normally identified on a vessel and whether that is built into the extinguisher’s code or handled separately.