Japanese Hydrogen Yacht: WTF???

This has got to be among the most ( I'll be nice here ) fanciful alternative energy schemes I've ever seen.

Here's how it works:

The system uses an ordinary off-the-shelf hydroturbine to generate electricity. Typically these are used on larger sailboats to recharge batteries when wind conditions are right. The energy comes from the wind -- the boat goes slower than it otherwise would as it drags the turbine through the water. ( These days solar panels are much preferred over this technology because they are much easier to deploy and maintain. )

Now things go totally off the rails into Rube Goldberg territory...

Instead of charging a battery with useful electricity the power from the turbine is used to electrolyze treated sea water to make hydrogen.

This hydrogen is then used to catalytically hydrogenize toluene to methylcyclohexane.

To recover the hydrogen the reaction is reversed, the methylcyclohexane is heated with a catalyst ( probably platinum ) converting it to toluene and hydrogen gas.

By the way, toluene and methylcyclohexane are toxic to marine life.

The overall efficiency of this system has got to be abysmal. This is obviously greenwash for an industry that burns tremendous amounts of petroleum.