🔍 Key Concepts

• Twin-screw vs single-screw maneuvering • How opposed propeller directions affect turning • Effect of rudder vs propellers on low-speed control

💭 Think About

• When a vessel is almost dead in the water, which has more effect on turning: the rudder or the way the screws are used? • How can two propellers, one on each side, be used differently from one another to help the ship turn? • Which choice describes something you can ONLY do because you have two separate screws, not just more power?

✅ Before You Answer

• Identify which options talk about rudder movement versus propeller use • Ask: does this feature require having two independent screws or could a single-screw ship do it too? • Eliminate any option that is just about more power rather than actual control or turning ability