Sustainable Marine has engaged a series of Canadian specialists to further support its environmental monitoring efforts, considered one of the most ambitious and advanced in the tidal energy industry.
In May 2022, Sustainable Navy became the first company to successfully supply floating tidal power to the Canadian grid, harnessing the huge tidal currents in Nova Scotia’s Bay of Fundy.
With the support of a fish monitoring expert InnovaseaSustainable Marine is currently testing advanced techniques that have the potential to further improve knowledge of the marine ecosystem, including fish tag triangulation, high-resolution short-range imaging sonar testing, and exploration of artificial intelligence techniques. for video processing.
The company also works with a range of other local Canadian specialists, including SubC Imaging for testing advanced video cameras to improve image quality.
This new installment of work builds on Sustainable Marine’s extensive environmental monitoring efforts previously conducted under the Ocean Energy Research Association‘s Pathway to test imaging sonar, surface and bottom mounted echo sounders and to automate data reporting.
Jason HaymanCEO of Sustainable Marine, said: “The work we are undertaking will shed further light on fish behavior by determining the location of tagged fish and whether or not they are close to our tidal energy platform. We’ve already tested imaging sonar, but want to see how well high-resolution sonar performs in close quarters as one of the options explored to support 24-hour monitoring and operation.
“Artificial intelligence techniques are also used to evaluate video data and automate analysis. All of this will inform ongoing work as we continue to develop robust risk assessment methodology, taking into account fish behavior and distribution as well as turbine physical properties, to demonstrate ultra-low environmental impact. of our tidal technology.
Sustainable Marine has carried out numerous environmental monitoring in the Bay of Fundy since 2018, resulting in over 2000 hours of video (including several tens of terabytes of data). The results show few positive identifications of marine life except at low tide when the rotors are stationary, according to the company.
Large volumes of data continue to be collected through Sustainable Marine’s multi-sensor environmental monitoring system, which is attached to the PLAT-I 6.4 platform.
“We have now compiled a number of monitoring reports, produced on a quarterly basis. Our results are consistent with all other studies that have been carried out over the past 15 years involving the deployment and operation of in-stream turbines around the world, which to date have observed no negative interactions or harm to marine life.
“Our hydrophone data confirmed that our turbines produce low amounts of noise, and no hearing damage or significant disturbance of fish behavior is expected on the basis of the measured sound levels”, added Hayman.
Sustainable Marine also contributes to the Fundy Ocean Research Center for Energy (FORCE) Risk Assessment Program (RAP) by supporting a fish tagging campaign in Minas Passage.
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