Nortek News

Photo: Thales Australia

For the Royal Australian Navy, Technological Leap Starts Small

do that.  That’s one of the key differentiators of the Bluefin vehicle, and why we chose it.”Both the Bluefin-9 and Bluefin-12 use commercial off-the-shelf sensors to collect bathymetric and environmental data, including data on water currents, temperature, salinity and turbidity; the Nortek Doppler Velocity Log (DVLs) for current measurements; and the Sonardyne Solstice Multi-Aperture Sonar (MAS) for high-resolution imagery even in murky littoral waters.“Solstice uses multiple elements to generate an image, and in doing that, we improve the signal to noise ratio, and in doing

10 million m³ of sand have been deposited around the Houtribdijk levee, protecting infrastructure against waves and nature’s elements. Photo: Frank Janssens/Rijkswaterstaat.

Dutch Flood Defense, The Natural Way

When the Dutch government and research institutions wanted to monitor how waves and currents would affect the pioneering use of artificial sand banks to protect a levee in a non-tidal freshwater system, Nortek was selected to supply key measuring instruments and set up the data telemetry system.The Houtribdijk is a 25 km long levee, or dike, separating two large artificial lakes, the IJsselmeer and Markermeer. The lakes and accompanying levees protect the Netherlands from the forces of the North Sea’s extreme weather events, and from flooding from inland freshwater river systems.After years of

Nortek and Del Mar Oceanographic are collaborating to give researchers from around the globe a cost-effective way to answer vital questions surrounding the functioning of ocean processes. Image: Nortek

Case Study: Helping Ocean Researchers Obtain Hi-Resolution Measurements at a Lower Cost

Understanding the three-dimensional nature of the ocean is becoming a critical focal point of ocean research, but it can be a costly affair.Paired with Nortek current profilers, Del Mar Oceanographic’s Wirewalker is giving researchers from around the globe a cost-effective way to answer vital questions surrounding the functioning of ocean processes. This information helps improve environmental monitoring and climate forecasting, which in turn assists in developing measures to adapt to our changing climate.Information on the three-dimensional structure of the ocean is proving increasingly vital

Photo: Nortek

Helping to Keep Waterways Navigable in the Netherlands

Maintaining the narrow navigational channels through the shallow tidal flats of the Wadden Sea in the Netherlands is a constant battle, due to the high rate of sediment deposition. Nortek’s Signature VM instrumentation has proved to be a valuable weapon in this fight, providing vital information on particle density and current flows through the water layers.The Dutch jokingly say that God created Earth, but the Dutch created the Netherlands, given the extensive measures taken through the centuries to reclaim and protect the country’s low-lying land from the sea, largely through the construct

A REMUS vehicle shows the traditional four element DVL array (Photo Courtesy Hydroid)

ADCPs & DVLs: Recent Tech Developments

unleashed the modern era of current measurement. In the decades since, oceanographers and ocean engineers have employed these tools in a variety of configurations and thousands have been delivered. But what have the last few years brought to the field?An inline DVL on the Fusion vehicle (Photo Courtesy Nortek)As the ADCP/DVL ecosystem has matured there have been many innovations. Recently, leading manufacturers have brought creative developments to the field. Teledyne RDI, the successor to the first company to commercialize the ADCP, continues to deliver key technologies, especially DVLs, for undersea

(Image: 2G Robotics)

2G Robotics Unveils Micro Inspection Skid

Canadian marine technology company 2G Robotics said it has launched a new laser survey skid for inspection class remotely operated underwater vehicles (ROV).Developed in partnership with iXblue and Nortek, the all-in-one integrated Micro Inspection Skid delivers high accuracy inspection capabilities with subsea dynamic laser scanning to enable survey and inspection by low cost vehicles.Available for new and existing vehicles including the Saab Seaeye Falcon and the Seatronics VALOR, the skid features a plug-and-play design that comes fully calibrated and only requires mounting and connection to the

Photo: Nortek

Change of Management for Nortek

After over two decades at the helm of Nortek, a specialist in oceanographic instrumentation, Atle Lohrmann is taking on new challenges at newly started Hefring Engineering in Boston. Nortek’s new CEO, Finn Ivar Marum, has been entrusted with the task of ensuring Nortek’s continued growth.Nortek was established in 1996, when Atle Lohrmann set up offices outside Oslo, Norway, and started building up production capacity for Doppler instrumentation.Since then, Nortek has grown rapidly, with its revenues increasing from $985,000 in 1996 to $24.6 million in 2018. Many factors lie behind the

Dr.  Jyotika Virmani and Dr. Marlon Lewis at OceanObs’19. Photo: OceanObs’19

OceanObs’19: Innovation Expanding Ocean Observations

new system was being presented to the OceanObs’19 community for feedback to ensure it would be “fit for purpose.” Throughout the event this concept was often raised for all technologies as a way of reminding the participants that there are many solutions to diverse ocean observing needs.Nortek was also onsite at OceanObs’19 embracing the conference charge to “improve the efficiency, decrease the cost, or add new observations that were not previously possible.” Their solution was the ECO platform. ECO, Nortek’s mini-ADCP for shallow water profiling will be available

The Sea Ox enters the surf in Jacksonville, Fla. (Photo: Rob Howard)

Video: Robotic Surf Crawler

companies. Attendees were given an opportunity to pilot the vehicle in and out of the water using the handheld controller. Three beach profiles were run using GPS autonomy, and later a state profile line was run. The Sea Ox, which can pressure sensor based bathymetric data, was also equipped with a Nortek ADCP and AML turbidity and sound speed sensors.The vehicle can be used in autonomous mode using inertial systems or GPS, and can be driven using RF antenna, RF buoy or using a tether. Trialed this summer at ANTX, the inertial system achieved a misclosure of 3.38m after a 2,813m mission with 44 turns

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