🔍 Key Concepts

• Diesel-electric propulsion uses diesel generators to create electricity that powers electric motors on the propeller shafts • Think about how electric motors behave at very low speeds and frequent speed changes • Consider which option best matches the operational strengths of ships that need precise control (e.g., tugs, DP vessels, some ferries)

💭 Think About

• Which of the choices is MOST closely related to how easily and precisely you can control propeller speed and direction with an electric motor? • If a vessel often needs to start, stop, reverse, or change speed quickly, which choice would be the biggest benefit? • Compare: which options are mainly about cost and upkeep, and which is about how the vessel handles in tight spaces or during docking?

✅ Before You Answer

• Be sure you focus on a primary operational advantage, not just a possible side benefit • Ask yourself: diesel engines still exist in this system, so would maintenance truly be less overall? • Verify which choice describes how the vessel handles and responds to engine commands, especially near piers or in confined waters