I have a Marine
Breeze that I just changed the blades on, I bought the silent wind
blades and the hub, fits well and easy to convert, but spendy. After putting them on I had to leave boat to work and have not had much time to monitor
them in all conditions, but for the 24 hours I was on board they were very quiet and a big improvement. I could not here them, but now I can here a slight hum from the generator
when its putting out power. The original blades made a wooshing noise
so I couldn,t here the generator
background hum. You have to be about 10 feet away to here hum.