Extraterrestrial liquid water
The Gliese 581 planetary system contains multiple planets that may be candidates for surface water, including Gliese 581c, Gliese 581d, might be warm enough for oceans if a greenhouse effect was operating, and Gliese 581e.
Energy Observer
Energy Observer joins a vein of big projects for research and development sharing a calling for technology, society and the environment and carrying a message in favour of renewable energies. In this vein we can also name the polar schooner Tara, that has travelled across the oceans since 2007 for science and the protection of the environment, Solar Impulse, the first solar plane, or even Planet Solar which became the first solar electric vehicle ever to circumnavigate the globe in 2010. In October 2016, the foundation Race for Water Odyssey announced that it was introducing hydrogen technology to the Planet Solar catamaran utilising solely solar energy, for an expedition around the world with similar ambitions to the Energy Observer project.  Planned, but not yet realized ships with hydrogen fuel production aboard with renewable energies are the "orcelle". This ferry should be the "green flagship" of the Wallenius Wilhelmsen Logistics, a Norwegian-Swedish shipping Company. She uses sun and wave energy to produce hydrogen aboard for propulsion of the vessel. Another hydrogen ship, also not realized so far, is the deepsea yacht "eco trimaran", using also the energy of sun and waves. Wind energy is utilized not by sails, but by a wind turbine. So this energy source may also contribute to hydrogen production aboard, even in mooring times.