If you want to reduce the environmental impact of your next vacation, you could do better than boarding a cruise ship. Luxury liners consume tons of fuel and produce even more sewage that is often dumped directly into the ocean. But cruises don’t have to be disastrous for the Earth by design: As inhabitat reports, the newly-designed Ecoship aims to be the most eco-friendly cruise ship on the seas.

The futuristic vessel was envisioned by the firm Oliver Design for the Japanese humanitarian organization Peace Boat. For decades, Peace Boat has been spreading its message of global social change through “peace voyages” that sail around the world. The Ecoship will embody this mission by being kinder to the environment than conventional cruise ships. Ten photovoltaic solar sails extend from the deck like giant fins, collecting clean energy to supplement the hybrid engine. Retractable wind generators harvest energy as well.

According to Oliver Design, the Ecoship will produce 30 percent less carbon dioxide than modern cruise ships. The vessel’s electrical system has also been updated with both the solar sails and kinetic floors onboard providing power. The biggest change comes in the sewage operations: Both the waste and water will be fed through a closed loop, which means that whatever’s produced is filtered and recycled again and again.

As these features are working behind the scenes, passengers will get to see some Earth-friendly amenities up close. A “plant kingdom” that covers five decks will consume surplus waste, water, and carbon dioxide produced by the ship, while vertical farms will be used to grow vegetables for meals.

When the Ecoship sets sail in 2020, it will continue to spread awareness of the changing climate that inspired its design. Oliver Design writes on its webpage, “The organization [Peace Boat] wants the Ecoship to be a turning point for the shipping industry and a flagship for raising awareness on climate change. As well as hosting Peace Boat’s voyages throughout the world, the ship will be used to stage exhibitions on green technology at the 100 ports where it is expected to dock each year.” You can check out the concept art for the project in the video below.

[h/t inhabitat]