Massachusetts based Cape Air has agreed to purchase 75 electric commuter planes from Eviation. The plane carries 9 passengers, has a range of 500 nautical miles, a speed of 250 knots and needs only 30 minutes to recharge for each hour of flight time. Recharging will be done by truck based generators between flights.
If it can work for planes it should be able to work for boats.
https://www.futureflight.aero/news-a...ctric-aircraft