🔍 Key Concepts

• Foam fire-fighting basics – how foam actually extinguishes burning liquids (smothering/vapor suppression, not cooling) • Application technique – why you usually avoid plunging the foam stream directly into the burning liquid surface • Deck structures and surfaces – how you can use nearby structures or the deck itself to let foam "flow" gently over the burning area

💭 Think About

• Which method will best allow the foam to form an unbroken blanket over the surface of the burning oil without disturbing or splashing the liquid? • If you direct a strong foam stream straight into a burning pool of oil, what might happen to the oil and the foam pattern? • How can you use ship structures or the deck to help the foam spread gently across the burning surface rather than driving it under or through the liquid?

✅ Before You Answer

• Identify which option avoids agitating or splashing the burning oil • Check which choice helps create a continuous foam blanket over the surface of the fuel • Eliminate any option that sounds like using foam primarily for cooling instead of smothering/vapor sealing a flammable liquid fire