Here’s one for boating enthusiasts that are looking for emission-free boating: Austrian boat producers Silent-Yachts has released the Silent 60, which is propelled by a combination of solar energy collected from 42 solar panels and, more interestingly, an innovative 13sqm kite sail.

The system is rigged by Kevlar lines to a mast on the foredeck, which is also where the system is housed for easy storage. After being inflated, it can be released overboard to drift a distance away from the yacht, before being pulled via winch to get the kite wing airborne.