Dredge monitoring & instrumentation · Canada · St. John's, Newfoundland and Labrador · since 1992

Notus Electronics

“Wireless dredge monitoring — see exactly what your dredge is doing, in real time.”

Notus Electronics, based in St. John's, Newfoundland and Labrador, designs and builds net and gear monitoring systems for the marine industry. Its Dredgemaster system installs small, robust sensors on the dredge and transmits vital dredge angle and warp length information wirelessly to the vessel.

Unlike traditional one-way pingers, Notus sensors use an active two-way communication system: the sensors 'talk' to each other via proven two-way protocols. This makes Notus the only system capable of delivering true warp lengths, giving a real view of the gear. Sensors offer true omnidirectional beam patterns and variable data rates of 5, 10, 20 and 60 second intervals.

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Dredgemaster wireless dredge monitoring

Sensors on the dredge transmit pitch angle, heel angle and warp lengths to a 3D display in the wheelhouse, with top, bird's-eye and alignment views.

Pitch angle monitoring

Shows the forward and backward lean of the dredge — if the pitch angle is incorrect the dredge does not dig into the bottom correctly, and the angle indicates when the bag is full. This feature alone can cut tow times in half.

Heel angle monitoring

Shows the side tilt of the dredge: see instantly if the dredge begins to roll over, and know whether it sits in a bank or a valley.

Starboard and port warp lengths

Indicate the exact amount of warp let out on each dredge for precise wire length — for example, easily set out 317 fathoms of warp to get a precise pitch angle.