Suction Sails

The latest “news of the future” press-release breakthrough in shipping:
A ship supposedly to be outfitted with four (4) suction sails, said to possibly reduce fuel consumption by 10%. I’m thinking, if it had 40 sails, could they power the ship entirely? Or would it tip over? Anyway, one more way to enhance lift, probably at the penalty of high drag, but…

Riviera - News Content Hub - Wisby Tankers’ juice carrier to receive eSails wind-assistance (

Wind-Assisted Propulsion Systems for vessels | bound4blue