🔍 Key Concepts

• Fixed vs. semi-portable vs. fully portable CO2 systems and how they are defined on ships • The difference between permanent distribution piping and using a hose and nozzle • Where semi-portable systems are typically used (e.g., around machinery or galley equipment)

💭 Think About

• Ask yourself: Does a semi-portable system behave more like a fixed system or more like a fully portable fire extinguisher? Why? • Which option describes something that could be moved to a nearby fire, but still serves one protected area with a dedicated arrangement? • Look at each choice and decide: Is this a design feature of a large, built-in system, or of something that can be moved and aimed by hand?

✅ Before You Answer

• Verify which type of system normally has permanently installed distribution piping (fully fixed vs. semi-portable). • Consider which feature (horizontal mounting, cylinder weight limit, permanent piping, hose/nozzle) is most commonly associated with operator‑aimed CO2 discharge. • Eliminate any options that sound like general extinguisher details rather than a classification definition for a semi-portable system.