🔍 Key Concepts

• Line-throwing appliances often use cartridges or rockets to fire a line • Manufacturer’s safety warnings about heat, sparks, and open flames • What is meant by an explosive atmosphere on or near a vessel

💭 Think About

• Which option describes a condition where a spark or ignition source would be especially dangerous? • Think about where flammable vapors or gases might collect on a vessel and what equipment you would avoid using there. • For each choice, ask: does operating line-throwing gear here create a realistic ignition or detonation hazard?

✅ Before You Answer

• Verify which situations are associated with flammable vapors or gases (e.g., fuel, cargo vapors, paint fumes). • Check the safety labeling and instructions that normally come with pyrotechnic or rocket-propelled line throwers. • Eliminate any answer choices that describe conditions where the main concern is inconvenience or discomfort, not fire/explosion risk.