Dave, the aft verandah is deeper and the room of similar size. I typically booked aft cabins and have not noticed any greater motion than the rest of the ship. I fully enjoy the view while underway, seeing the whitewater mixing with the deep blue of the ocean. Then there is the relaxing sound of the water. The vista is great, being able to see both starboard and port gives an aft cabin extra benefits while doing the inside passage. Enjoy your travels, John