Four choices that make the difference
An asymmetric airfoil generates more lift than a symmetric profile: up to +40% in aerodynamic lift. It is a measure of the wing, not a promise of fuel saving, which depends on the ship and its route.
A light wing means less structure to carry and less load on the deck: more thrust for every tonne installed.
The two-legged mast respects the onboard spaces and does not obstruct the loading areas. Easy installation, on new and existing ships. Is it possible to install a WAPS in ten hours? This is the challenge STRAMBA has taken up.
Wings that can be depowered and feathered when the weather requires, conservative structural margins, and a design that goes through classification society review before anything is built.
Automated operation and mechanical simplicity: little manual intervention, low maintenance, long life.
Wind propulsion adds to whatever fuel or engine you already have, including future alternative fuels.
Is it possible to install a WAPS in ten hours?