3. Manoeuvrability of Ships in Narrow Waterway :

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In restricted waters such as harbor, bay or canal, it is necessary to know the precise manoeuvring characteristics of ship including the effects of water depth, channel bank or the another ships from viewpoint of safety of navigation. In narrow waterways, specially, the effects of channel bank and hydrodynamic interactions between ships are fairly significant. This paper examines hydrodynamic behavior of ships during meeting and passing in narrow water channel, by using slender body theory. Furthermore, ship motions with rudder control during passing in channel by using these hydrodynamic forces arc discussed. This paper concludes as follows. (1) During passing, the interaction forces such as lateral force and yaw moment between two ships are affected by the distance between ship and channel wall, and water depth. (2) By simulation study of ship motion, the possibility of the collision with another ships on the channel wall to be caused by hydrodynamic interaction was indicated. (3) Some guides on two way traffic in water channel were obtained.

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