2004 Volume 20 Pages 575-580
Two routes of north Yamatoguchi and southern Touguchi are fixed in the Naha harbor.However, a Yamatoguchi route has narrow Entry-into-port part to the weather and billow conditions, and is difficult to navigate--etc.--since there is a problem on use, most of large vessels use Touguchi. On the other hand, it is expected by the deployment to the north Urasoeh ead area that the importance of a Yamatoguchi route will increasei ncreasingly from now on. Then, it is necessary to regard a Yamatoguchi route as the main route of the Naha harbor, and to fix as a route which a large vessel tends to use. This examination reports what carried out the navigation simulation in order to verify the form of a route, andt he safety of the navigation about arrangement ef a breakwater, when a vessel uses a Yamatoguchi route.
