Collision Avoidance Control – Accurate in Narrow Water Case Study: in West Line Tanjung Perak Surabaya, Indonesia

: The study of an automatic control system to avoid collisions between ships has been done through the design of an autopilot system. The algorithms of control based on fuzzy and applicable of COLREGS rules. This study was conducted in numerical computer simulation in variety of control fuzzy methods. Fuzzy logic system works based on AIS data, and the output system is the speed and direction of the vessel that is capable of avoiding collisions with other vessels and foreign objects. A case study was conducted on the western line of Tanjung Perak Surabaya, Indonesia. The result of the avoidance-collision system shows that the accurate increase of the distance and the different heading between the vessels is precisely generated by the DCPA-TCPA inputs of fuzzy control.