Abstract: A modular computer and telecommunications system for automatic continuous real-time monitoring, tracking, navigation and proactive warning for one or more private and commercial marine vessels and for automatically controlling their navigation within a specific region. The disclosed system and apparatus employs intelligent display, GPS, and transceiver/modem devices on marine vessels that are underway, anchored or docked to routinely transmit the vessels ID, GPS and status data to a supervisory fail-safe computer server. The server's resident relational database contains both pre-entered static information about all vessels having similar on-board devices, as well as dynamic information (such as coordinate data relating to rough seas, severe weather, GPS data for all participating vessels, underwater hazards, fog, etc.).