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| How does the effect known as "bank suction" act on a single-screw vessel proceeding along a narrow channel? |
| A) It pulls the bow toward the bank. |
| B) It pulls the stern toward the bank. |
| C) It pushes the entire vessel away from the bank. |
| D) It heels the vessel toward the bank. |
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| jamessons23 - 2025-09-19 13:03:42 Registered (3) |
| When a single-screw vessel moves through a narrow channel, the asymmetrical flow of water around its hull creates a pressure differential known as bank suction. The propeller's side force, particularly on a right-handed propeller, exacerbates this, drawing the stern closer to the nearby bank. This effect is most pronounced at slow speeds in confined waters with a small under-keel clearance. For a comprehensive <a href="https://lawconsultants.pk/sim-owner-details/">number details online check</a> of the specific hydrodynamic forces and safety margins involved, consult maritime operational guidelines. Ultimately, this can lead to a sudden and forceful sheer, demanding proactive rudder and engine adjustments from the helmsman to maintain course and avoid grounding. |