🔍 Key Concepts

• Purpose of an inert gas system on tankers and what it must be able to do during cargo operations • Relationship between inert gas production capacity and cargo handling (pumping/loading) rates • Safety requirement that oxygen content and tank pressure remain within safe limits during maximum cargo operations

💭 Think About

• Ask yourself: during which operation do we need the highest continuous flow of inert gas into the tanks? Think about gas being displaced by oil movement. • Consider whether inert gas capacity is designed around shipboard equipment (like boilers or pumps) or around the fastest possible cargo movement in or out of the tanks. • Think: when cargo is moving quickest, what system or rate mainly determines how fast vapors are displaced and need to be safely controlled?

✅ Before You Answer

• Identify which option represents the limiting cargo handling rate the ship can experience for gas displacement. • Confirm which listed rates are directly tied to how fast vapor/air must be replaced by inert gas in tanks. • Eliminate any choices that relate mainly to combustion air or to physical tank volume rather than operational flow rate.