Japanese designers are preparing for rising sea levels - by making plans for a huge floating city.<br /><br />Developers N-Ark - who see the idea as the ocean-based version of Elon Musk's SpaceX - say Dogen City would provide a self-sufficient habitat for 40,000 residents.<br /><br />They explain a new economic zone call New Ocean would be resilient to climate change.<br /><br />Measuring 4 km in circumference, the plan would be for inhabitants to be able to get to any point in the zone within an hour.<br /><br />A range of buildings, including a sports stadium, is proposed, and properties are able to be moved by sailing them to another location.<br /><br />The infrastructure is circular in design to protect it from severe weather and consists of three infrastructure types.<br /><br />These are a habitable ring containing the main habitable zones, an undersea data centre and medical research facilities, and flexible inner ring structures that can move freely in the inner bay.<br /><br />N-Ark's development roadmap currently earmarks the year 2030 for completion.<br /><br />They explain: "New Ocean is a term intended for the ocean version of the private space business innovation "New Space" started by Space X.<br /><br />"We will propose six elements (medical, food, housing, information, and electrical services) to realise New Ocean, promote the entry of various companies, and promote ocean development activities.<br /><br />"Through this, we aim to create maritime innovation, and seek to create this future together with participating companies, governments, and universities."
