This paper describes the implementation of a monitoring and control system for maritime beaconing in the access channel to La Plata Port using LoRaWAN technology. An IoT sensor network was deployed on the port’s buoys, featuring long-range communication capabilities and low power. The system enables remote supervision of beacon status (particularly batteries and photovoltaic panels), fault detection in signaling electronics, flash synchronization, and real-time alert generation for critical events such as impacts or inclination changes. The design of the solution was carried out in two stages: (i) evaluating the feasibility of the LoRaWAN network in the maritime environment and (ii) developing the hardware and software for the monitoring nodes, compatible with pre-existing beacons. The results demonstrate that the LoRaWAN network provides optimal performance for maritime applications, with a low packet loss rate and effective coverage even under adverse weather conditions. The implemented solution has enhanced beaconing management efficiency, reduced operational costs, and optimized safety in port navigation.