You are backing on twin engines with rudders...

Question 1 / 2707066636ef128f7522a1c522cd5

Question 1 of 2707066636ef128f7522a1c522cd5

You are backing on twin engines with rudders amidships. Your starboard engine stalls. To continue backing on course, which action should you take?

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Question 1 of 27070

You are backing on twin engines with rudders amidships. Your starboard engine stalls. To continue backing on course, which action should you take?

🔍 Key Concepts

• Transverse thrust (sideways force) created when using only one stern-working propeller • Effect of twin-screw backing with rudders amidships versus angled rudders • Which way the vessel’s stern will tend to swing when only the port engine is backing and the starboard is stopped

💭 Think About

• When both engines are backing with rudders amidships, what keeps you on a straight course? What changes when one engine stops? • With only the port engine backing, which direction will the stern tend to move, and how can rudder angle counter that swing? • Is increasing speed alone enough to correct sideways swing, or do you need directional control from the rudder?

✅ Before You Answer

• Determine which propeller (port or starboard) is still providing thrust and in which direction it turns when backing on your type of vessel • Visualize the natural swing of the stern with just the port engine backing and no rudder input • Ask yourself which rudder angle would create water flow over the rudder that opposes the unwanted swing, helping you continue backing on your original course

Question 1 of 27070

You are backing on twin engines with rudders amidships. Your starboard engine stalls. To continue backing on course, which action should you take?

Increase your engine speed

Apply left rudder

Apply right rudder

Keep your rudder amidships

Question 1 / 2707066636ef128f7522a1c522cd5

Question 1 of 2707066636ef128f7522a1c522cd5

You are backing on twin engines with rudders amidships. Your starboard engine stalls. To continue backing on course, which action should you take?

Back

Question 1 of 27070

You are backing on twin engines with rudders amidships. Your starboard engine stalls. To continue backing on course, which action should you take?