The effect known as "bank cushion" acts in...

Question 1 / 2707066636ee728f7522a1c517a41

Question 1 of 2707066636ee728f7522a1c517a41

The effect known as "bank cushion" acts in which of the following ways on a single-screw vessel proceeding along a narrow channel?

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Question 1 of 27070

The effect known as "bank cushion" acts in which of the following ways on a single-screw vessel proceeding along a narrow channel?

🔍 Key Concepts

• Hydrodynamic interaction between a vessel and a nearby bank in a narrow channel • Difference between bank cushion (pressure at the bow) and bank suction (effect on the stern) • How water flow changes around the bow vs stern when close to a river bank or canal side

💭 Think About

• Picture a single-screw vessel moving ahead close to one bank. What happens to the water being pushed aside at the bow when there is a solid bank right next to it? • Think separately about the bow and the stern: which end feels a higher-pressure ‘cushion’ from water piling up against the bank, and which end is more affected by lower pressure/suction? • When a vessel gets too close to a bank, which end tends to be pushed off the bank, and which end tends to swing in toward the bank, creating a sheer?

✅ Before You Answer

• Make sure you distinguish clearly between cushion (higher pressure pushing away) and suction (lower pressure drawing toward). • Focus on the bow’s behavior near the bank, not just the motion of the whole vessel. • Eliminate any answer that confuses the effect of bank cushion with the separate effect commonly called bank suction on the stern.

Question 1 of 27070

The effect known as "bank cushion" acts in which of the following ways on a single-screw vessel proceeding along a narrow channel?

It forces the entire vessel away from the bank.

It forces the bow away from the bank.

It forces the stern away from the bank.

It heels the vessel toward the bank.

Question 1 / 2707066636ee728f7522a1c517a41

Question 1 of 2707066636ee728f7522a1c517a41

The effect known as "bank cushion" acts in which of the following ways on a single-screw vessel proceeding along a narrow channel?

Back

Question 1 of 27070

The effect known as "bank cushion" acts in which of the following ways on a single-screw vessel proceeding along a narrow channel?