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PT. Tangguh Samudera Jaya is a stevedoring company which operates the wharf 303, 304, and 305 at Terminal 3 in Tanjung Priok Port. Terminal 3 is predominantly serving international container stevedoring and small portions of domestic containers. Every time a vessel berths at Terminal 3 Tanjung Priok Port, especially at the wharf 303, 304, and 305, there is a decrease in the productivity of loading and unloading, which causes Key Performance Indicators (KPI) that company set can’t be achieved. Therefore, this study uses the method of Multiple Linear Regression Analysis and Stepwise Regression, to determine the effect of loading and unloading time at the wharfs, loading and unloading time in a container yard, truck cycle time, and the number of ganks on productivity of loading and unloading and identifying the variables that have the greatest influence on loading and unloading productivity at the port. It was found that the independent variables can explain the dependent variable which is the loading and unloading productivity with a value of 99.9% while 1% is found in other variables besides the variables mentioned in this study. Overall or partially the independent variables significantly influence the loading and unloading productivity, and the variable that has the greatest influence on the loading and unloading productivity is loading and unloading time at wharfs. Keywords—loading and unloading productivity, Box Container Hour (B/C/H), Multiple Linear Regression Analysis, Stepwise Regression

Factors Affecting Loading and Unloading Productivity: A Case Study of PT. Tangguh Samudera Jaya