MDA Systems

National Vessel Tracking System

Protecting your national waters from hostile vessels

The National Vessel Tracking System (NAIS) is a proven national vessel identification and tracking system solution.

Leave no vessel un-tracked. This is an ideal solution for national authorities seeking to enhance maritime security and safety.

From large ships, to small RIBs and Jet Skis

Very large numbers of boats of all types and sizes can be reliably tracked, identified and monitored simultaneously in real time across all your waterways, territorial waters, EEZ and if so required, globally with no range limitations or coverage gaps.

Keeping authorities aware of dangerous activity

Powerful data display and analytic systems enable automatic real time activity analysis of every vessel against pre-defined parameters enabling instant identification of illegal or dangerous activities, along with a range of management tools such as the vessel ELOG and VMS-Connect functionality that help system operators manage situations and incidents effectively.

NAIS – How it works

Intelligent fusion of long range AIS and SAT-Trak transmission technology combined with sophisticated monitoring systems allows all vessels to be continuously tracked at minimal cost without range limitation or coverage gaps.

No range limitation

Continuously and reliably track and monitor all boats of any size and type without coverage gaps.

Real time onscreen display

Watch vessel positions on electronic charts with electronic ELOG data instantly available on each boat

VMS-connect system

Allows mass scale collection of vessel and ownership data and ongoing updates and maintenance.

Discrete, secure, anti-tamper

Vessel transceivers with dual long range AIS and SAT-Trak technology


All SRT systems benefit from a flexible and dynamic architecture which enables significant customisation. Scale, performance and functionality can all be customised to refine the system to meet your specific requirements


The SRT Customer Support Team have extensive global experience of working with partners to successfully deliver systems of all sizes and types – even in the most challenging of environments. Using this experience, unrivalled technical expertise and a comprehensive eco-system of specialist deployment support tools, we will work with you to design, implement and maintain your system.

Looking to start a conversation?

Our team is ready

Enquire today