3Dトラッカーによる新しい係留船動揺監視システムの提案

概要

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The wharf operation efficiency should be defined based on the allowable ship motions for cargo handling. Especially it is very important to estimate the long period horizontal motions, surge and sway, at the berth. Some mathematical models have been developed and many experiments were carried out to simulate the motions in waves. But these results should be compared with more exact actual field data. Because of the ability of instrument and an operational cost, a few field observations of moored ship motions have been carried out. Moreover it was impossible to measure the long period horizontal motions by the conventional instrument using an accelerometer. In this study, the observation method of three dimensional positions of the targets using the "3D-Tracker" is described as well as the 6-component motions of ship. We propose two new motion monitoring system of moored ship. One is "absolute system" in which there are two CCD-cameras on a quay wall and the targets on a ship. The other is "relative system" in which the cameras are on a ship and the targets are on a quay wall. The field measurements are carried out, while the accuracy of the motions is confirmed by the indoor experiments.
公益社団法人日本航海学会の論文
1998-03-25