Quiet, but not silent. The QuietTorque™ system is very quiet when compared to a diesel. Some noise is to be expected in the form of drive-line sounds when operating at the mid-throttle range and above. You will hear your underwater drive train. Hearing your cutlass bearing and propeller will be a new experience. Unlike the diesel, you, crew, and passengers can expect to talk in normal volume both in the cabin and on deck. Very handy for foredeck communication when docking and anchoring.
If you are a racer, expect to have your competitors demand that your key be hung on the backstay in plain view to avoid any temptation to squeeze on a little tiny bit of “electric wind.”