The coastal countries had their boundary limit in the sea, the people in those area undergo fishing in the sea, due to carelessness or they unknowing cross the border limit of their country. In such situation the lives of fishermen continue to be difficult. The people are shot to death by the neighbourhood militants. Maritime surveillance is of the highest importance in ensuring the safety of the fisherman in the sea and in securing countries borders. In order to meet the challenges and threats relating to safety of navigation, obstacle identification, and overall security surveillance activities are carried out. In our project an alarm system is included which will generate an alarm if they cross the safe zone which is prior to 1 km of the country border, and the alert message will be displayed in the LCD. It also sends that information to the navy control room. Continuous alarm will be generated if they cross the border. If they proceeded further necessary actions will be taken by the navy. An IR sensor is used to detect the obstacles which will give an indication to the fisherman in the presence of any threats. This will save the life of the fisherman whose life is unsafe in sea.