Is it possible to calculate the degree to which fouling and corrosion hinder a vessel’s efficiency? Can a ship operator use that data to determine the best time to clean or recoat the hull of his/her ship? Macsea’s answer to both questions: yes. The marine technology specialist has developed a solution called Hull Medic which they say measures the effects of hull fouling on a ship’s performance. Using a ship’s propeller as a power absorption measuring instrument, the fully automated Hull Medic estimates both water speed and shaft power.