It appears to be a great pleasure to relax and enjoy the vibration-free silence of being on the water in an electric boat.
The latest, just released episode of Fully Charged takes a look (and ride) at just such a boat from Boat Showrooms
There are even more advantages over a conventional engine than just personal enjoyment according to the video, as apparently the higher upfront price tag can be offset by low service/operation costs over about 10 years (+/- depending on usage of course).
The range is high enough for whole day (about eight hours).
"A gentle meander down the peaceful Thames river on a glorious summer day in Olde England, and there's no noise or vibration because this boat is electric.
It's the ALFASTREET ENERGY 23C and it's lovely"