I have a 2015 27K and I had a noise a year or so ago and what it turned out to be is a wire rubbing on the fan. Not that is your problem but you may want to lift off the dog house and see if you can see anything. Mine was easier to diagnose because it would happen at idle and I could start the engine with the dog house off. I would not, repeat would not try driving it that way.
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This post is opinion based on experience.
2015 Hurricane 27K
2013 Sea Ray 220SD
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