So these are a not hazard to shipping then? I quote,
"AWS said that because the system was submerged below the surface, it was "invisible" and would not cause a visual impact or become a hazard to shipping."
Let's hope it operates 'at least' 6m below the sea level (and which sea level is that - presumably lowest water?). Doesn't give these beasts much of a chance does it? Perhaps they're only putting them in shoaler water which tankers wouldn't pass through? Hey, I'm not against alternative energy but I am very pro safe navigation at sea.