In supporting coal operations and distribution activities, PT XYZ has a port to load coal onto barges. This barge will sail according to its destination, for transshipment barges to anchorage vessels and for long towing barges will sail to the unloading port. The operational problems at the Port that are currently occurring are high queues and cycle times. With production increasing from 46 million tons in 2024 to 54 million tons in 2026 until the mine closes in 2036, and the cost efficiency that is the target management, improvements are needed so that operations at the Port run excellently. The problem of queues and high cycle times will be an obstacle to this achievement. In order for these problems to be overcome, it is necessary to analyze the high queues and cycle times at the port. This study aims to find out the factors that affect barge cycle times, factors that are the biggest contributor to high queues and cycle times, and to find strategic steps that need to be taken by companies. The method is carried out through a mixed method, using Arena Simulation Software to conduct modelling, find obstacles and determine the strategy to be carried out. Improvements were made to the barge docking process through the implementation of strict SOP, optimizing port capacity and adding facilities, shortening the process of sending documents with the use of email and social media and reducing sailing time by arranging the vessel's position closer to land. By doing this, the output results from modelling in the Simulation Arena showed that there was a reduction in average queue time by 75%, cycle times decreased by 33% and output increased by 10. 53%. There was an increase in production volume of 330, 000 tons/month, with potential additional revenue of 16, 170, 000.
Irawan et al. (Tue,) studied this question.