🔍 Key Concepts
• Fuel oil grades as used in maritime operations (A, B, C, D, E)
• Relative flash point and volatility of different fuel grades
• Typical characteristics of Bunker C compared to lighter fuels like gasoline or kerosene
💭 Think About
• Think about whether Bunker C is a light, easily evaporating fuel or a heavy, thick fuel oil that may even need heating to pump and burn.
• Ask yourself: are higher letter grades (toward D or E) generally associated with lighter, more volatile liquids or heavier, less volatile ones?
• Compare Bunker C with fuel oils commonly used in domestic heating or slow-speed diesel engines on ships—would those be considered very high or very low flash point fuels?
✅ Before You Answer
• Verify the definition of each grade (A, B, C, D, E) in terms of flash point and volatility in your study materials or CFR references.
• Confirm whether Bunker C is categorized as a heavy residual fuel oil or a light distillate fuel.
• Make sure you know which grade letter corresponds to the heaviest, least volatile fuel oils in the classification system.