This paper proposed a new model referred as Life Jacket Compatibility Index Static Model (LCI). The reason for the development of this model was due to accidents associated with the usage of life jackets on board the passenger vessels. This new model was developed based on the combination of variables of models of life jacket and passenger vessel. These models were combined by compatibility, which is a new variable introduced in the study. The algorithm of the model is developed based on Fault Tree Analysis and Boolean Logic Gate. The purpose of the model is to rate the safety of coastal passenger vessels in the perspective of compatibility of life jackets with the coastal passenger vessel, which is a new perspective on safety assessment of passenger vessels. Another purpose of the model is to determine the maximum capacity of passenger based on available area to don the life jackets, which is also a new perspective to determine the maximum capacity of passengers. The model can be used by the maritime authority to regulate the safety operation of the coastal passenger vessels. The introduction of LCI model contributes to a new method of assessment of passenger vessels in the field of maritime safety.
In this study, the effect of the gel coat composition on tensile strength of glass fibre reinforced polyester (GFRP) composites was evaluated. The experiments were conducted on various gel coat composition and time. Samples were immersed in sea and river water for 6 months to investigate the differences in tensile strength. Optical observation using SEM on the composites surface and comparative analysis in terms of tensile strength were used before and after immersing. As results, the most excellent tensile strength was the gel coat composition consisting of 0.3 kg of reolosil QS-102 with 10 kg of resin SHCP 268BQTN with a value of 51.9 MPa. Tensile strength reduced about 33.4 % compared to other sample where reduced to 46.3401 %. The difference in the composite surface as a result of immersion process on each sample was also discussed in this paper.
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