The Margin and Burden of Route Keeping Maneuver of Vessels Proceeding along the Fairway in the Harbour of CHUNG MU

충무항의 항로내에서 조선상의 여유와 부담

Many studies are conducted to evaluate the risk of maneuvering ships in the congested harbours and narrow channels. These studies are very important for the prevention of sea traffic accidents in those sea areas. In this paper, the author carried out a series of observations on sea traffic condition of the vessels entering and leaving the harbour of CHUNG MU, in order to evaluate the risk of grounding, the margin and burden of route keeping maneuver of vessels proceeding along the fairway of this harbour. The results obtained are as follows: 1. The grounding risk indices for the east bound and west bound vessels at the middle part and western part of the fairway were higher than those of them at the eastern part. 2. The margin of route keeping maneuver in the fairway appeared to be the highest at the western part of the fairway for the east bound vessels, and the highest at the middle part for the west bound vessels, but the lowest at the western entrance for both of them. 3. The burden of route keeping maneuver in the fairway appeared to be the highest at the western part of the fairway for both of the east bound and west bound vessels, but the lowest at the eastern part for both of them. 4. The influence of maneuvering indices T' on the grounding risk indices appeared to be larger than that of maneuvering indices K' on them.

충무권의 선로내에 관측선을 정하고 통항선박의 선적을 연속측정한 자료로서 항행중의 위험성과 조선상의 여유와 부담에 관하여 연구한 결과를 요약하면 다음과 같다. 1. 항행중의 위험성은 동항할 때 모두 항로의 동부보다 중앙부와 서부에서 비교적 높았다. 2. 조선상의 여유는 동항할 때는 선로의 서부, 서항할 때는 선로의 중앙부에서 가장 높았다. 그러나 서부입구에서는 동항할 때나 서항할 때 모두 가장 낮았다. 3. 조선상의 여유는 동항할 때나 서항할 때 모두 항로의 서부에서 높았고 동부에서 낮았다. 4. 조종성지수 T', K'는 모두 좌초위험지수 R에 영향을 미치나 T'가 K'보다 더 많은 영향을 미치는 것으로 나타났다