The project presents a Smart Sea Navigation and International Maritime Boundary Line (IMBL) Border Alert System designed to enhance maritime safety and navigation awareness among fishermen. Many fishermen unintentionally cross international maritime boundaries due to limited access to real-time navigation information, potentially resulting in legal consequences, vessel confiscation, detention, and serious safety risks. The proposed system integrates GPS-based real-time location tracking, geographical distance calculation, IMBL boundary detection, weather and cyclone alerts, a mobile application, centralized cloud monitoring, and an IoT-enabled embedded device based on ESP32. The system continuously monitors the vessel's location and generates proactive alerts when approaching the IMBL. A Warning Zone of 5 km and a Danger Zone of 500 meters are implemented to provide sufficient time for fishermen to change their course and avoid accidental border crossing. To ensure reliable operation even when internet or mobile connectivity is unavailable, the system incorporates an offline fail-safe alert mechanism consisting of a buzzer, voice notifications, LED indicators, and an OLED display. In addition, real-time weather and cyclone alerts provide fishermen with timely information about adverse sea conditions, further improving their safety. The integration of GPS, ESP32, IoT communication, cloud database, mobile application, weather services, and a centralized monitoring dashboard provides a comprehensive maritime safety solution. The proposed system aims to reduce accidental IMBL crossings, improve navigation awareness, provide early warnings during hazardous weather conditions, and contribute to safer and more reliable fishing operations.

Nambirani E, Senthil S, Sindhuja P, Vishali R, "Smart Sea Navigation and Border Alert System" International Journal of Scientific Research and Engineering Development, V9(5): Page(862-868) September - October 2026. ISSN: 2581-7175. www.ijsred.com. Published by Scientific and Academic Research Publishing.