Ultrasonic swells radiated from the model of radar through Ultrasonic sonic detector peregrination in to free space by surveying the girding area. However, the revolving radar medium will be concentrated over this unidentified boat and starts firing until the unknown boat dissolved or moved out of range, if it detects any adversary boat or boat. Since the Given boat or linked boat is having a communication link with main control unit, it'll be honored and allows freely sailing in the ocean. This is the main ideal of this design work and model of over said entire medium will be constructed fortherallypurpose. When thesystem is energized, theUltrasonicdetector attached to amotorstarts revolving to descry the adversary vessels within the range of 2 bases roughly and the range is confined because it's a prototype module. With the help of a simulated gun deposited towards the ultrasonic surge’s direction and moves along with radar medium delivers machine gun sound with flashing LED when the system detects unauthorized ship, However, green LED will be blown and boat details will be displayed through TV, If the system detects authorized boat also if the system detects unauthorized boat, red LED will be blown. This entire moving medium will be arranged over a top of small essence palace structure of 15 elevation height and it's intended to pretend oceanpalace used for radar system. The revolving medium can move a span of 0 – 300 degrees and its movements are confined through limit switches. The main processor is designed with 89c52 micro controllerchip and TVis used to displaythe information rainfall it's authorized orunauthorized ship, However, its data will be transmitted & entered information in the form of boat details will be displayed through TV, if authorized boat is within the range IR. Voice record cum playback chip is used to deliver the machine gun sound through speaker. H Ground IC is used to drive the DC motor.