Coast Guard Exams
Question 95Safety & Environmental - QMED70% to pass

Which of the devices listed would be safe to use in a compartment with insufficient oxygen?

AI Explanation
The correct answer is B) Self-contained breathing apparatus. A self-contained breathing apparatus (SCBA) is the only option listed that can provide a safe, independent supply of breathing air in a compartment with insufficient oxygen. The other choices, such as a canister mask, dust/gas mask, or wet handkerchief, would not be adequate in an oxygen-deficient environment and could lead to asphyxiation. SCBA units are specifically designed to allow the user to breathe safely in low-oxygen or hazardous atmospheres by providing a portable source of clean, breathable air.