🔍 Key Concepts

• USCG fire extinguisher size classifications (I, II, III, etc.) • Difference between portable, semi-portable, and fixed fire extinguishing systems • Where and how small extinguishers are typically stowed and handled on board

💭 Think About

• Think about how a mariner actually uses Size I and II extinguishers: are they carried to the fire or permanently installed? • Ask yourself which terms in the choices usually describe large systems that protect an entire space, instead of individual hand-carried units. • Consider the typical requirement on small vessels: what kind of extinguishers are required in machinery spaces, galley areas, and near the helm?

✅ Before You Answer

• Verify which sizes (I, II, III, etc.) the USCG refers to as hand-carried units. • Confirm which answer choices usually apply to installed systems that are piped or mounted to protect a space. • Eliminate any choices that describe equipment that cannot be easily picked up and operated by one person.