Nortek News

Photo: Nortek

New, High-Performing USV for Ocean Surveying

A new unmanned surface vehicle (USV) designed for the Chinese market offers an open and low-cost platform to measure water current and direction. Nortek China has integrated Doppler instrumentation on the vehicle to help better meet user requirements for ocean surveying.The new USV has an IPC (Industrial Personal Computer) as the main operation platform and uses Remote Desktop, a remote control technique, to communicate with all the instruments installed. This means that the vehicle offers an open and low-cost platform for customers who need to carry out several different tasks at the same time.

Photo courtesy of OSIL

OSIL Buoy for Coastal Erosion Project

analyse and process the data with a graphical display.The OSIL 1.2m Tern buoy offers a high visibility platform with a GPRS communication system ideally suited to the installation location given the proximity to the shore and a popular wreck diving site. The robust buoy is equipped with a seabed mounted Nortek AWAC to provide three-dimensional current profiles in cells with thicknesses from 0.25 to 4m. The ADCP is additionally furnished with a Prolog board for internal wave processing, and it can also be used to estimate suspended sediment loads by correlating the acoustic back scatter intensity to a site

Nortek staff in China mobilizing the Signature VM package under the attentive eye of end user Wang Yan, Senior Manager of Hydrology at CCCC’s Zhongjiao No.1 Hangwu Engineering Reconnaissance Design Institute. As Signature VM is a straightforward plug-and-play system for current surveying, the crew were able to sail out for a test survey after only approximately 30 minutes of setup. Image: Nortek

Current Profiling & China’s Maritime Infrastructure Drive

China’s recent wave of infrastructure renewal has included a large portfolio of developments, such as ports and other developments, that have a subsea component. Accurate, efficient and cost-effective current profiling is vital in the successful implementation of major maritime projects.Nortek has been able to play a role in this side of China’s economic revolution, through its collaboration with a subsidiary of China Communications Construction Company (CCCC), a Fortune 500 listed firm that has been at the forefront of the infrastructure drive.CCCC & NortekCCCC’s hydrological

Maneuvering the Subsea Power Hub over the pier for the first system wet trial. (Photo: Nortek)

Tidal Power for Seabed Oil and Gas Installations

of oil and gas field developers. These include having two or more turbines and differing battery sizes depending on site requirements.The device being lowered to the deck of the Leask Marine C-Odyssey workboat, in preparation for installation at the European Marine Energy Centre (EMEC). (Photo: Nortek)EC-OG is confident that the Power Hub will have uses beyond filling the gap until power via cable to the seabed can be installed or restored. The equipment offers the prospect of at least five years’ running time without needing maintenance, and probably a lot longer. So it could serve well

MSS Defender at the surface in a pond in Spring City, inspecting a submerged ship for training (Photo: Nortek)

Collaborators Make ROVs Smaller and More User-friendly

. Getting it all to work together takes a high level of collaboration between professionals, located around the world.The Defender models now being produced by Pennsylvania-based VideoRay, a world leader in inspection-class ROVs, are a prime example.For these vehicles, Norwegian Doppler specialist Nortek deployed its DVL1000 Doppler Velocity Log in collaboration with both VideoRay and Vermont’s Greensea Systems – which supplied the OPENSEA operational software platform, inertial navigation, and an autonomous control system for the ROV – to create a versatile, powerful and extremely


Inside research tank of University of Miami SUSTAIN laboratory (Photo: University of Miami)

University of Miami’s Hurricane Research is Helping Save Lives

;s Alfred C. Glassell, Jr. Surge Structure Atmosphere Interaction Laboratory – otherwise known as SUSTAIN. Here, he and a team of researchers are trying to improve forecasts of hurricane intensity and associated storm surges. Their efforts are supported by advanced scientific tools from Nortek, a Norwegian acoustic instrumentation developer.“The ultimate goal of our research here is to save lives by improving hurricane forecasts,” Haus explains. “We want to be able to plan evacuations more smartly, to evacuate only the people that need to be evacuated.”The importance

REMUS M3V  (Photo: Hydroid)

Hydroid's Most Compact AUV Ever Produced

When scientists and engineers at Hydroid set themselves the task of designing one of the most compact autonomous underwater vehicles (AUVs) ever produced, they collaborated with Nortek to provide high-quality navigational equipment capable of fitting such a small form factor.   Hydroid has built on REMUS AUV technology – first developed at the Woods Hole Oceanographic Institution in Massachusetts – to become a leading manufacturer of trusted, field-proven lightweight AUVs for underwater search and survey. Acquired by Norwegian technology firm Kongsberg Maritime in 2008, the

Sensors Switched-out at the Bourne Tidal Test Site

Two Nortek Signature 500 acoustic doppler current profilers (ADCP) at the Bourne Tidal Test Site have been removed and replaced with new, freshly charged Signature 1000 systems.The data that is being collected is part of the research being conducted by Soroush Kouhi a PhD candidate at the University of Rhode Island (URI). He and his team of students are working out the details of how best to measure and characterize the water flow resource at tidal turbine sites. The Bourne Tidal Test Site is a great place to learn about how to deploy, calibrate and manage these sensors in the turbulent waters of the

Echogram of diel plankton migration. (Image: Nortek)

New Acoustic Technology Aids Fisheries Management

are coming to fruition as fisheries management is begins to take on a more holistic ecosystem approach and funding becomes even more limited. In order to match these changing needs, scientific instrumentation must follow suit.The Signature100 long-range current profiler from Norwegian manufacturer Nortek lends itself well to collaborations between physical and biological scientists, since it uniquely combines the capabilities of an ADCP and a biological echosounder in one. It is currently the only instrument in the world providing this combined capacity, Nortek said.“The biggest advantage of

L3 OceanServer’s Iver Precision Workhorse autonomous undersea vehicle with low-drag side scan and bathymetry transducers. Photo courtesy of L3 OceanServer.

L3 OceanServer Unveils Iver PW AUV

range of 40-plus nautical miles on a single charge; Open and modular with commercial off-the-shelf components; Industry-leading tracking and safety communications; Precise, repeatable measurements based on iXBlue INS sensor; High-accuracy navigation solutions with extended range Nortek DVL; and Low drag with EdgeTech 2205B conformal side scan and bathymetry transducers.  

Tocardo International uses the Signature1000 to verify the performance of their turbines. The data from the instrument also helps Tocardo check the correct orientation of the blades. (Image: Nortek AS)

Optimizing the Tides

U.K. alone, the government estimates that wave and tidal combined has the potential to deliver 30 – 50GW equating to around 20 percent of the country’s current electricity needs. As investment and innovation begin to surge across the sector, Dutch-based tidal energy leader Tocardo joins with Nortek to help optimize the operational performance of its turbines.  Sicco Kamminga, Director of Nortek’s Netherlands division, explains how ADCPs are contributing to solving the world’s sustainable energy needs. Unlike other forms of renewable energy, tidal energy isn’t dependent

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