Title: Ship squat in open water and in confined channels
Abstract: This chapter discusses ship squat in open water and in confined channels. When a ship proceeds through water, it pushes water ahead of it. In order not to have a hole in the water, this volume of water must return down the sides and under the bottom of the ship. The streamlines of return flow are speeded up under the ship. This causes a drop in pressure, resulting in the ship dropping vertically in the water. The ship also trims forward or aft. The overall decrease in the static underkeel clearance, forward or aft, is called ship squat. The factors that govern ship squat include ship speed (Vk), block coefficient (Cb), blockage factor (S), and presence of another ship in a narrow river. The chapter further discusses ship squat for ships with static trim, and in wide and narrow rivers. It concludes that the maximum ship squat for a given situation can be easily predicted, and it is very helpful in saving the cost.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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