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2 TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2 2022

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Assessment of Factors Contributing to the Risks of Cargo Liquefication Accident in Bulk Carriers (A Qualitative Approach)

Nwigwe T., Minami K.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2022

Vol. 16 No. 1

149--152

Liquidation of cargo in bulk carrier has been identifying as a major hazard affecting the bulk carrier shipping and has resulted to several loss of lives. This study assesses the liquidation problem in bulk carrier shipping, it also discusses the mechanisms by which cargo liquefaction occurs in bulk carrier and the factors influencing the risks of occurrence, based on a qualitative approach. Based on the findings and survey, the unsafe storage condition, poor compliance with the testing and certification of cargoes, poor loading plan, have been identify as some of the root casual factors influencing the risk of liquidation problem in bulk carrier. This study will contribute to increasing the awareness and understanding of the problem of cargo liquefaction and will facilitate the development of regulations that reflects the realities of this problem and assist in the development of future recommendations for mitigation plans against the liquidation problem in bulk carrier.

Analysis of effect of pillars position on longitudinal strength in perintis ship structure type 1200 GT

Yudo H., Abdillah H. Z., Zakki A. F.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2022

Vol. 16 No. 3

563--571

Perintis ships are sea transportation highly relied upon by the people in remote, frontier, underdeveloped, and border islands, considering the absence of other types of vehicle operating in the area. Perintis Ships can carry up to 500 people and connect islands categorized as 3TP with larger ports. This ship will be analyzed in longitudinal strength with variations in pillar positions. The analysis results will be compared, and whether the research results allowed the BKI regulatory standards. The maximum stress value produced by the variation without pillars is 21.76 N/m2 in calm water conditions, 41.19 MPa in sagging conditions, and 10.67 MPa in hogging conditions. The variation of the pillars on the side is 21.95 MPa in calm water, 41.54 MPa in sagging conditions, and 10.76 MPa in hogging Conditions. The variation of the pillar in the middle obtained maximum stress 21.96 MPa in calm water conditions, 41.55 MPa in sagging conditions, and 10.77 MPa in hogging conditions. Of all the variations, it has met the criteria of the BKI regulations, where the allowable stress is not to exceed 140.14 MPa. From the analysis that has been done, it can be concluded that the position of the pillar laying does not significantly affect the longitudinal strength of the ship.