The comprehensive three- day Coastal Security exercise Sagar Kavach by Indian Coast Guard off Kerala Coast, concluded today. <br/><br/>More than seventy ships, Fast Interceptor Craft, Patrol Boats of Indian Coast Guard, Navy, Coastal Police, Customs and other agencies participated in the exercise. They undertook round-the- clock patrolling at sea. <br/><br/>Extensive aerial surveillance of the adjoining seas was also mounted by Naval and Coast Guard aircraft to detect vessels being used by the opposing force for carrying out attack.<br/><br/>