Study on Development for Practical Prediction Method of Ship Manoeuvrability in Shallow Water and Narrow Waterways

点击翻译按钮获取中文摘要

Some problems on information to be included in the manoeuvring booklet and on the manoeuvrability standards has been discussed at the International Maritime Organization. At the same time, the development of prediction method for ship maneuvrability at the initial stage of design will be expected.As the background with these points, this research examines the prediction method of ship manoeuvrability in shallow water and narrow waterways. From the results of this research during two years, the following conclusions have been obtained.(1) We can estimate the manoeuviring performance of a ship in shallow water by using the mathematical model proposed in this research.(2)[ This methematical model can be used for estimation the hydrodynamic force in any water depth by expanding the data on deep water.(3) Among the hydrodyname coefficientsin this model, the coefficients of interaction forces between hull and rudder, or propeller and rudder are sensitive to any small change in computational results on ship manoeuvring charateristics.(4) This research proposed also how to estimate the hydrodynamic force acting on ship in the proximity of uniform and non-uniform bank wall such as canal wall, breakwater and wedge-shaped bank wall.from the above results, the calculation and simulation methods proposed in this research will be useful for prediction of a ship manoeuvrability at the initial stage of design, for sutomatic control system of a ship in shallow and restricted water, for discussion of marine traffic control system and also for construction of harbor or canal.