They seem to be selling an outboard engine and battery pack that goes on your outboard boat, so I'm confused by your comment.
My boat needs something like two 75 HP motors to run safely at displacement speeds, and much more to get on plane.
In case you're curious, it's about 10M long. You have to have a larger boat to travel away from shore with any safety... small boats have to stick to the coast. My boat isn't actually very big, and doesn't have the range or stability to travel between continents away from shore, either.
Electric scooters and electric outboards have been around for a while, they're okay for what they do.
However, what I would need (and most of the people who own boats larger than 5M long) is the equivalent of a tesla battery pack and motors... which aren't available.
If you want to "travel between continents", get a sailboat. No powerboat is practical for that. If you're just talking about a fishing trip, powerboats smaller than 10M can certainly get you out of sight of shore.
Not true. Lots of power cruisers are out there, and all commercial traffic (cargo, people shipping, etc) happens via motor vessels.