Media reports circulated this week, claiming that Microsoft founder Bill Gates had ordered the world’s first super-yacht with hydrogen-electric propulsion for an estimated £500m ($644m).

This was followed swiftly by a statement from Sinot Yacht Architecture & Design, the Dutch firm that developed the concept, which stated words to the effect of "No, he hasn't".

On Watch has thought about this, and humbly opines that the genesis of this story is ...