The research objective is to determine the impact of relationship management with land transportation service providers to the performance of the port with a mediation service that adds value to the PT. Indonesia Vehicle Terminal (IKT), Tanjung Priok, Jakarta. The study uses a quantitative approach to associative and the data processed by the program LISREL 8.8. The sample was 100 of service users with quota sampling technique. Data analysis was conducted using descriptive and inferential statistical path analysis. The results show: relationship management with providers of land transportation services have a direct positive impact and significant to the performance of the port, services that provide added value affect prositive direct impact and significant to the performance of the port, the relationship management with providers of land transportation services have a positive direct impact and significant to the service that provides value added, and the relationship management with providers of land transportation services have positive indirect impact and significant to the performance of the port with a mediation service that adds value. The conclusion is relationship management with providers of land transportation services has an impact on the performance of the port with a mediation service that adds value, therefore performance can be improved through the port relationship management with providers of land transportation services and services that provide added value.

The purpose of the paper is to find out the effect of loading unloading and clearance in/out service preparation of the loading unloading productivity to the performance of Makassar Conventional Port. The problem of the paper was the low performance of loading unloading productivity in Makassar Conventional Port due to nature resources, facilities, and human resources. The paper used quantitative method using path analysis. There were 60 samples taken. The result of the paper partially shows that there is a significant and direct effect of loading unloading productivity to the port performance of general cargo ships in Makassar Conventional Port.

The purpose of research to determine the effect of ownership structure and risk management on Investment Decision of sea transport companies listed on Indonesia Stock Exchange period 2014-2018. The research used quantitative method. The sample are financial report of 13 companies with 5-year observation period taken by purposive sampling technique. Data analysis used descriptive statistics and inferential path analysis. The result of the research shows: there is no dirrect effect of ownership structure on investment decision, there is no dirrect effect of risk management  on investment decision, there is positive dirrect effect of ownership structure on risk management, and there is no indirrect effect of ownership structure on investment decision mediated by risk management.The conclusions of the study:  there is a positive significant of  ownership structure on risk management, so that the risk management improved by increased ownership structure.

The research objective was to determine the effect of marine inspector capabilities on ship governance and shipping safety performance at PT Vallianz Offshore Maritime, 2019. The study used the survey method. The sample is 59 skippers taken by census technique. Data analysis used descriptive statistics and inferential statistics on path analysis. The results showed: marine inspector's capability has a positive and very significant direct effect on shipping safety performance, ship governance has a positive and very significant direct effect on shipping safety performance, the capability of marine inspector has a positive and very significant direct effect on ship governance, and marine inspector capability positive and very significant indirect effect on shipping safety performance by mediating ship governance. The conclusion of the study is marine inspector's capability to influence shipping safety performance by mediating ship governance,so that shipping safety performance can be improved through marine inspector's capability and ship governance.

The ultimate ambition at this research was to conclude the direct and indirect influence of the influence of shipping safety at sea on the safety of ship traffic mediated by organizational commitment (survey on the Tanjung Priok Marine and Coastal Guard Unit in 2020). The design usage of the particular research was not only associated and as the complimentary work under the survey method but also related to the population which was the captain of the Tanjung Priok Marine and Coast Guard Unit. By using the sampling technique, this research has its purposive sampling with a total sample of 66 respondents and by implementing the data collection technique, quantitative questionnaire has been passed the trial and error for its validity and reliability. Under the Research Methodology theorem, this research is implementing the path analysis method with Smart Partial Least Square software ver. 3. The conclusion has indicate that shipping safety at sea has a direct effect on organizational commitment.