Our History

Founded in St. John’s, Newfoundland, Canada in 1992, Managing Director and Chief Engineer, Brad Henderson set out to develop a product unlike any other available on the market. Having worked in the underwater acoustic environment since 1984, Brad saw the need for a system that had two-way communication, as opposed to the traditional pinger based systems still in use today, and a sensor that offered true 360-degree, omnidirectional capability.

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Brad Henderson

Managing Director and Chief Engineer

Brad developed a one sensor system, the GearFinder 700, which allowed Captains and Researchers to locate lost gear. Despite the cod moratorium, Brad spent the first years of business involved in oceanographic consulting work with the Department of Fisheries and Oceans and other research organizations.

Picking up traction at home in Canada, Brad expanded the Notus team and made waves in Scotland, as the unique Notus capabilities were in high demand with the twin trawling industry.

Through Canada and Scotland combined, the Trawlmaster and Seinemaster systems were born.

With continued success in Scotland, Notus expanded throughout Europe with dealer networks in Scotland, Spain, UK, Denmark, Sweden, as well as the US, New Zealand and others. In 2010 Notus Maritima was established in Vigo, Spain to support our expanding customer base.

Notus Today

Notus Command Unit

Notus Command Unit

Today, our product line includes net monitoring for trawlers, with up to 25 sensors available. Our seining and dredging products continue to greatly improve fishing results all over the world.

In 2017 in response to customer demand, Notus released the ECHO for Shrimp Detection and the Notus MANTIS net sounder. Our unique Activ-Omni Intelligence continues to offer real data, in real time and has resulted in an expanded product line with continued opportunities for innovation and growth.

In 2018 Husky Energy came to Notus with an issue of monitoring their massive icenet for towing icebergs off oil field production zones. Using our reliable Acti-Omni Intelligence, Notus developed a unique chart-based monitoring solution.

Recently, MLD Denmark, manufacturer of controllable pelagic trawl doors, approached Notus, to use our Activ-Omni Intelligence to provide control and monitoring. This innovative, forward-thinking product is truly the future of trawling.

Our Dealer network has expanded to cover Europe, North America, Africa, South America, Oceania and Asia.


To date, over 6,000 sensors have been sold.

With a commitment to quality and innovation, Notus truly offers optimal performance, for superior results.