Gentlemen... unfurl your sails.

Not convinced: Powerboat plan to go round world in 65 ecofriendly days

'Course, not using any combustible fuel at all and sailing using
no-emission wind power is perhaps a tad more eco-friendlier still -
if you are sincere in trying to make some point about saving the
planet, and not just scoring a few greenwash points and column inches
whilst having a hell of a jolly.