Disclosed is a portable marine beacon system, including: at least one transmitter, at least one receiver conducting radio frequency (RF) wireless communication with the at least one transmitter to receive data of the at least one transmitter, and at least one smart handheld device wirelessly communicating with the at least one receiver to assess and process data from the receiver through Wi-Fi communication. The smart device comprises a central processing unit (CPU), a main memory, and a touch screen. The main memory stores a marine beacon manager application (App), and the touch screen is operated to instruct the CPU to execute the App, such that a transmitter management interface, an activity planning interface, a security patrol interface, and a record playback interface can be operated through the touch screen to provide for personal real-time tracking and functions of distress alert and precautionary safety protection for offshore and onshore positioning/rescuing.