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After thousands of salmon escape into the Pacific caused by a catastrophic infrastructure failure, we take a look at how regular inspection and maintenance could have prevented an issue like this.
Now more than ever before, systematic inspections of net pens can be easily conducted using cost effective remote operated vehicles (ROVs) also known as underwater drones. For less than $5,000 USD there is an effective method to conduct regular inspections for preventative maintenance - a small cost that far outweighs the financial, environmental and social costs that can be avoided with regular subsurface asset observation.
Marine Harvest Canada, located in British Columbia, Canada, currently operates a fleet of Deep Trekker ROVs, to conduct imperative subsurface checks. Since 90% of a farm is completely under the water, the only way to ensure that the site is intact is either by diving or by underwater robotic inspection.
Sending commercial divers below the surface is inherently dangerous and conducting human inspections can be a costly endeavor. In order to systematically ensure the inspection of key assets, Marine Harvest is deploying their ROVs on a regular basis; to verify the health of fish stocks, detect potential infrastructure failures early, and schedule required maintenance in a timely and cost effective fashion.
Aqua-Cage Canada, an aquaculture farm located in Parry Sound, Ontario is utilizing a Deep Trekker DTG2 Smart ROV to conduct regular and ongoing inspections. Kana Upton, the on-site biologist and manager advised, "some of the tasks we use the ROV for have included - routinely checking the fish nets for holes, monitoring fish behavior and health, visual inspections of mooring lines and anchors, monitoring feeding, and checking cage depths – as we want to ensure we are never touching the bottom".
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