Short story, yes! Longer story, this depends on many factors, such as outboard versus inboard motors, but overall electric boats are significantly quieter than petrol boats.
Our Torqeedo Cruise 6.0 and Torqeedo Cruise 12.0 are nearly silent, and Mag Power 30.0 gives a minor tone due to the powerful engine, but the noise is nothing compared to what you’d experience on a petrol boat.