How do oil rigs get the supplies they need? Special ships make their way to the offshore rigs each day and deliver boring equipment and other necessary supplies. It’s an undertaking that used to be impossible in rough seas,and for the businesses involved,that could threaten their production.For each day that work stops on the rig,oil companies can lose up to 30 million euros. To prevent this nightmare scenario,company Voith Turbo developed a smart-drive system. The new supply ships are fitted with propellers that help them stay on course in high waves and extreme winds. Hagen Tober tests one of the vessels in rough waters.