🔍 Key Concepts

• Fuel oil transfer systems purpose and operation on diesel vessels • Difference between transfer pumps and engine-driven (injection or supply) pumps • Regulatory focus on capacity vs. redundancy for fuel systems

💭 Think About

• Ask yourself: Is the regulation mainly concerned with having a backup pump, or with making sure the pump(s) can keep up with fuel consumption? • Look at which options talk about "transfer" pumps versus pumps directly driven by the engine—are those always required to be engine-driven? • Consider normal operations: fuel often has to be moved from storage tanks to service/day tanks. What characteristic must that system have so the main engine never starves for fuel?

✅ Before You Answer

• Verify which choices actually mention transfer pumps (not injection or supply pumps). • Check which options guarantee that the fuel available to the engine will not be less than the engine’s maximum fuel demand. • Eliminate any answers that confuse constant speed applications or engine-driven requirements with the basic regulatory requirement for fuel oil transfer systems.