🔍 Key Concepts

• Flash point and its importance in classifying flammable liquids vs combustible liquids • Typical flash point ranges of common shipboard oils (diesel, lube oil, kerosene) compared with light solvents like alcohol • Regulatory idea that lower flash point = more easily ignited

💭 Think About

• Which of these substances normally gives off enough vapor to ignite at a relatively low temperature, even at or near room temperature? • On most vessels, which products are treated with the greatest ignition precautions because they can light off from a small spark without much heating? • Think about which substance is commonly used in items like stoves, cleaners, or lamps because it burns easily without preheating.

✅ Before You Answer

• Review which of the options typically has a flash point below about 60°C (140°F), a common cutoff for flammable liquids in many codes • Recall that lube oil and most diesel oils usually have relatively high flash points compared with light solvents • Confirm which product you’d expect to evaporate and produce ignitable vapors most quickly at normal ambient temperatures