실습선 부산403호의 복원성 변화 = Alteration of the Stability in Training Ship Pusan 403

국문 초록 (Abstract)

釜山水産大學 實習船 釜山403호의 內部改造 및 重量物의 철거로 인한 復原性의 變化를 측정하기 위하여 傾斜試驗을 실시하고, 改造前과 試驗時의 (GM)￣, (KM)￣, (GZ)￣의 값을 비교하였으며, 또한 漁船 設備 等에 관한 規則 및 IMO 規定에 비추어 復原性能을 檢討하였다.
1. 輕荷 및 滿載出港狀態에서의 (GZ)￣값은 각각 0.307m 및 0.325m여서 復原性에는 異狀이 없는 것으로 판단된다.
2. 輕荷狀態에서는 改造前보다 (GM)￣이 0.046m 작고, (KM)￣가 0.141m 크나, 復原性에는 지장이 없는 것으로 보아진다.
3. 滿載出港狀態에서 탱크 내 液體의 自由表面의 流動을 고려하지 않을 때는 改造前보다 GM이 0.163m 작고 (KG)￣가 0.173m 크나 復原性에는 지장이 없는 것으로 간주된다. 그러나 탱크 내 液體의 自由表面의 流動을 고려하면 (GM)￣ 0.275m는, 漁船 設備 等에 관한 親則에서 산정한 (GM)￣의 基準値인 0.353m에 미치지 못하므로 이에 대한 보완이 필요하다고 본다.

다국어 초록 (Multilingual Abstract)

M/S Pusan 403(GT 243, 1000ps) was originally built as a research vessel on skipjack pole and line fishing in 1972. She had begun to serve as a fishing training ship of National Fisheries University of Pusan from 1974, since the interior structure has been remodelled and some weight articles have been removed, her stability is in doubt. The authors carried out an inclining experiment by using two pendulums at fore and aft with two weights on both sides.
Each value obtained was compared with the IMO safety code for fishing vessels and safety regulation for fishing vessels of Korea.
1. The GZ value, being 0.207m under light ship condition and 0.325m under departure condition with full load, can he assumed as no impediment on her stability.
2. Under the light ship condition, GM decreased by 0.046m and KG increased by 0.141m, compared with the values determined at the time of official sea trial. Therefore, no impediment on the stability exists.
3. The GM decreased by 0.163m and the KG increased by 0.173m, compared with the values determined at the time of official sea trial. In no consideration of the free surface effects of liquid in the oil and fresh water tanks, no impediment on the stability exists. But, in consideration of the free surface effect, it may be regarded that some impediment exists.