关键词: 船舶, 狭浅水域, 航行下沉量, 模型试验

Abstract: As the ship moves through narrow and shallow waters, the combination effect of the fluid flow and waves will cause the ship to squat with risk of grounding, thus endangering the safety of ship structures and navigation facilities. It is of great significance for navigation safety to effectively evaluate the ship squat. The ships sailing through the Three Gorges Dam Ship Lift have been examined in the current study. The ship squats of different ship types sailing through the Three Gorges Dam Ship Lift were measured by model test in the towing tank, which are used to fit the formulas for calculating the ship squat of different ship types. The results show that the sailing speed is an important factor affecting the ship squat, with the process of the ships sailing out of the ship lift as the control working condition of the maximum squat. The conclusions can provide technical support for the shipping management department to set navigation regulations and the ship design institutes to design relevant ship types.

Key words: ship, narrow and shallow waters, sailing squat, model test