Upon reading Carl's post on hydrogen fuel cells, I wanted to point out that Honda has a fuel cell offering on it's Clarity, available only in areas of California where fueling is available. Toyota has a Mirai. Hyundai offers the Nexo and they were actually the first to introduce a fuel cell car in the US. There are now 9961 fuel cell cars on the road in California and 48 buses. There are 45 hydrogen stations with plans to triple that. So, hydrogen powered boats are not an unachievable vision. When and where are the questions.