“Tesla of the Seas”
Swedish Water School Bus
uses Li batteries, costs $213,000

https://www.aol.com/news/tesla-seas-students-school-sweden-091141996.html

sample quote

“Batteries are currently just too heavy for the amount of energy that they provide,” he says.
“Boats and ships are very weight sensitive. For every kilogram of diesel or gasoline, a boat needs to carry 40 kilograms of batteries to have the same energy output. Boats and ships have to carry all of their energy with them, so carrying around 40 times the weight of their energy is cost prohibitive as well as design prohibitive.”

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Any moparts members running their bass boat trolling motors with 12 volt E-bike lithium batteries?