The new environmental regulations and the shipowners' desire to reduce sailing costs are working side by side to push forward the development energy efficient solutions. Bo Cerup-Simonsen, Head of Maersk Maritime Technology (MMT), tells ShippingWatch that the retrofit wave is still only getting bigger, and that the developments in recent years still only constitutes the first major step in an extensive energy revolution. At Maersk Line and Maersk Tankers, super slow steaming has made a big difference.