"Protei is Shape Shifting, Open Hardware, Sailing robot to sense and clean the oceans. Originally invented to clean up the BP Oil Spill pulling long oil sorbent using wind power by Cesar Harada, Protei is now a platform technology to transport scientific payload and clean-up equipment at sea, developed by an global community of scientists, engineers, makers and sailors.
The core ground-breaking innovation of Protei is the shape-shifting hull. Protei has no centreboard nor rudder : the entire hull changes shape to give our sailing robot unprecedented control of its trajectory and sailing properties. We are in the process of understanding these new properties." (https://sites.google.com/a/opensailing.net/protei/)