The Maid of the Mist boats at Niagara Falls have been fully electric since 2023: https://www.maidofthemist.com/maid-of-the-mist-sets-the-standard-for-modern-zer

The Maid of the Mist boats at Niagara Falls have been fully electric since 2023: https://www.maidofthemist.com/maid-of-the-mist-sets-the-standard-for-modern-zero-emission-vessel-operationsmaid-of-the-mist/ https://www.maidofthemist.com/maid-of-the-mist-sets-the-stan... They don't talk too much about battery capacity or charging but I'm sure the information is out there.