What effect does bank suction have upon the...

What effect does bank suction have upon the...

Question 1 of 31048fy_heal_CREATE_q423_2020

What effect does bank suction have upon the hull of a vessel in shallow water?

Question 1 of 31048

Q

What effect does bank suction have upon the hull of a vessel in shallow water?

🔍 Key Concepts

• Bank suction and bank cushion effects when a vessel is close to a riverbank in shallow water • How water flow and pressure change around the bow and stern when the vessel is near a bank • Relationship between faster water flow and lower pressure on one side of the hull

💭 Think About

• Picture a ship going ahead close to a straight bank in shallow water: which part of the ship (bow or stern) tends to be pulled toward the bank and which part tends to be pushed away? • Think about where the clearance between the hull and the bank is narrowest and where water must speed up to get through that gap—what does that do to pressure there? • Ask yourself: does bank suction act more strongly near the stern or near the bow, and does suction mean lower or higher pressure?

✅ Before You Answer

• Be clear on the difference between bank cushion (higher pressure, pushing off) and bank suction (lower pressure, pulling toward) • Identify whether suction is more associated with the bow or stern in shallow water near a bank before choosing an option • Match your understanding of suction (lower pressure) or cushion (higher pressure) to the phrase "greater pressure" or "lesser pressure" in the answer choices