Shipping is the most energy efficient form of transport, and more than 80% of goods traded globally are carried via the oceans, with a doubling in volume during the last quarter of a century. Recognising the global need for seamless maritime navigation, ESA’s Navigation Innovation and Support Programme, NAVISP – inventing the future of navigation with more than 200 R&D projects initiated to date – is therefore focused not only on the land but also the sea.