Gimmick!

It took a bit of parsing, but the power is provided by a supercharged gasoline engine. This is used to break hydrogen out of sea water and use it to generate electricity. I’m not even sure if the drive is an electric hybrid design or if the props are hooked directly to the engine. At the end of the day, this is just silly. While it might make some sense to have a small trolling motor for very low speed work, which could draw its power from fuel cells rather than batteries, there is no reason to make less efficient the power train of a boat which will spend most of its time cruising at peak efficiency.

It is impossible to crack hydrogen from sea water, and then simply recombine it with oxygen to produce electricity without some sort of external power input. You can’t pull out any more than you put in.