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Is the T200 generating cavitation?


On January 22nd, Mark Langille posted a question about T200 optimal operational depth to prevent cavitation. As far as I know, he never received any answer.
The T200 is a great energetic device able to develop thrust beyond 40 Newtons at 3800 RPM.
At that speed it is very noisy in water, and I believe that a portion of the noise comes from cavitation developing on its 3 blades, especially when operating at shallow immersion.

Can someone has seen T200 generating cavitation when “energetically” activated?