You are stopped with no way upon your vessel...

Question 1 / 2066636ee728f7522a1c518b16

Question 1 of 2066636ee728f7522a1c518b16

You are stopped with no way upon your vessel at the pilot station. Your vessel is a large twin-screw ship. You must come around 180° to board your Pilot. How should you use the engines and rudder to turn the ship fastest in the least amount of space?

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🔍 Key Concepts

• Handling characteristics of a twin-screw ship (how opposing propeller directions affect turning) • Difference between turning with rudder and ahead power vs using one engine ahead and the other astern • Effect of being stopped with no way on (no headway) on rudder effectiveness

💭 Think About

• Ask yourself: When the ship has no headway, which has more immediate effect on swing: the rudder or differential propeller thrust? • Think about which combination of engine commands will create the strongest turning moment without needing much forward movement. • Consider how a port versus starboard turn is normally made on a twin-screw vessel using only engines alongside a berth.

✅ Before You Answer

• Verify which options rely mainly on rudder action (which needs water flow across it) versus propeller thrust. • Check which choice will create opposing thrust vectors on each side of the ship to pivot it about its own center. • Confirm that the maneuver should prioritize turning in place over building speed, since you are at a pilot station with limited room.

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Question 1 of 20

Slow ahead with hard over rudder

Full ahead on the engines and hard over rudder

Full ahead on one engine, full astern on the other

Half ahead with hard over rudder, then full astern on inboard engine

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Question 1 / 2066636ee728f7522a1c518b16

Question 1 of 2066636ee728f7522a1c518b16

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Question 1 of 20

66636ee728f7522a1c518b16

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

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