Your ship is in shallow water and the bow rides up on its bow wave while the stern sinks into a depression of its transverse wave system. What is this called?
• Shallow water effects on ships including changes to trim and sinkage • Difference between overall sinkage versus trim by the bow or stern • How a vessel’s bow and stern interact with its own wave system at higher speeds in shallow water
• Which choice describes a situation where the stern settles deeper while the bow rises due to shallow water and speed? • Is the effect described more about changing course uncontrollably, or about how the ship sits in the water (trim/sinkage)? • Which option refers to a hydrodynamic effect in shallow water rather than a steering or directional stability problem?
• Identify which terms are specifically associated with shallow water hydrodynamics at speed. • Check which option describes a change in trim (bow up, stern down) rather than simple vertical sinkage of the whole vessel. • Eliminate any answers that are mainly about loss of directional control in following seas or yawing motion.
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