Journal of Navigation and Port Research 2002;26(2):221-226.
Published online June 30, 2002.
부산항 연안해역에서의 소형선박 표류 거동특성 관측 및 분석
강신영, 이문진
Field Experiments and Analysis of Drift Characteristics of Small Vessels in the Coastal Region off Busan Port
Sin-Young Kang, Mun-Jin Lee
Abstract
To provide reliable data for drift prediction models, field experiments were carried out in the coastal region off Busan port. Four different size of vessels(10, 30, 50, 90G/T ton) were deployed for the experiment. Among them G/T 50ton class vessel was equipped with instruments measuring the currents, winds, headings and trajectory data. In the rest of vessels only the position data were recorded for the purpose of target divergence study. The trajectories of each vessel were measured by DGPS(Differential Global Positioning System) and collected by APRS(Automatic Position Reporting System). The experiment was done in wind of 2~10㎧ and current of 0.5~1.5㎧. The leeway was derived by subtracting surface current velocity from target drifting velocity. The leeway rate of G/T 50ton vessel was found to be about 3.6% and the computed leeway speed equation was UL=0.042 W - 0.034. The processed leeway angle data were deflected by -30°~40° from the direction of ship drift.
Key Words: Drift experiment;Leeway;Search and Rescue;DGPS;APRS;Small Vessels


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