🔍 Key Concepts

• Common starting systems for diesel engines used on vessels and generators • Difference between energy source (air, hydraulic, electric, etc.) and type of operation (automatic, emergency, metered) • Which starter types are practical and widely used on marine diesel engines

💭 Think About

• Look at each option and separate items that describe an actual starting energy system from those that sound more like a mode of operation or feature. • Think about how small vs. large diesel engines are normally started on boats and ships—what physical systems do they rely on to crank the engine? • Ask which three types you are most likely to see listed together in a marine engineering textbook section titled "Methods of Starting Diesel Engines."

✅ Before You Answer

• Identify which terms clearly represent a power source for cranking the engine (for example, compressed air, pressurized fluid, or electrical power). • Eliminate any choices that include terms that describe how a starter works (like "automatic" or "emergency") rather than what kind of starter it is. • Make sure all three items in your chosen option could realistically be found as labeled systems on a diesel engine starting diagram.