Well if sailors weren't so lazy, they could stick to sailboats, couldn't they? But I bet someone will insist that they rack up a ship with solar panels, fill it with batteries, and drive it with an electric motor. And they will do this and trumpet their carbon-credentials without any checks to see if the sound levels and frequencies are harmonious to the environment.
Carbon gas-reduction isn't eco enough, but some people still obsess that it is the only thing.