Maritime search and rescue (MSAR) systems worldwide primarily depend on foreign ships to support those in trouble at sea. Signals of distress sea can now rapidly transmitted by satellite and terrestrial communication techniques to coastal search and rescue authorities and ships in the immediate vicinity. However, in case of emergencies, the critical thing is the rescue response time. In this framework, the MSAR operation done by utilizing unmanned aerial vehicles (UAV), which recently gained much technological advancement. Due to UAV fast and flexible deployment in the rough sea, it can perform MSAR tasks easily. We present the localization of missing persons from a vessel or boat based on transmission signals which their connected devices transmit for communication. We utilize the same frequency band of communication that marine user equipment (MUE) utilizes during their travel in the sea with maritime satellite or coastal base stations. Based on the transmitted signal, UAV can easily localize the position of the person in sea faster than the rescue team. UAV performs rescue operations by dropping life jackets and send the exact location of a person to rescue authorities onshore. Simulation results validated our proposed framework.