Conceptual design of dynamic positioning system for tugboat to improve safer operation in Indonesia, case study: Port of Cilacap

Due to increasing demand of the port activity it requires rapid operations of ship assisting and tug. Complex operations combined with challenging environmental disturbance often lead to ship accident that caused damaged to the jetty or the ship itself that also disrupt the overall port operation. On of the cause that lead such accidents is the limited capability of the tugboat to handle manoeuvre in extreme environment condition. Beside the safety of the operation are threatened this is also one factor that lead to decreased in tug operation effectiveness. This study intent to analyse the potential of dynamic positioning (DP) system used in the tugboat. Port of Cilacap used as study case due to special requirement as well as challenging location that lead in extreme condition of port operation. Two type of propulsion are used which is Azimuth and Void-Schneider propulsion. The conceptual system design is analysed by perform modelling simulation in Matlab software. Several condition of operation among the type of propulsion are assessed. The result is that DP system on tugboat could reduce the potential uncontrolled movement of the ship that lead to the accident. The analysis also proved that DP system of the ship can increase effectiveness of the operations by reducing the response time during manoeuvring.