You are landing a single-screw vessel with a...

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Question 1 of 2066636ee728f7522a1c517ee7

You are landing a single-screw vessel with a left-handed propeller, starboard side to the dock. As you approach the dock you back your engine with your rudder amidships. You would expect the vessel to __________.

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Question 1 of 20

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🔍 Key Concepts

• Single-screw vessel with a left-handed propeller • Effect of astern propulsion on transverse thrust (sideways push of the stern) • Rudder effectiveness when backing with rudder amidships

💭 Think About

• When a left-handed propeller turns astern, which way does the stern tend to move sideways? • If the rudder is amidships and you are backing, is the rudder creating a meaningful turning force, or is another force more important? • Visualize the vessel starboard side to the dock: if the stern is pushed one way, what does that make the bow do relative to the dock?

✅ Before You Answer

• Be clear on the difference between ahead and astern effects of a left-handed propeller • Confirm that with rudder amidships, the propeller’s side force (transverse thrust) dominates the turning effect • Mentally sketch the vessel next to the dock and trace what happens to stern and bow when the stern is pushed sideways

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