Elon Musk is building floating spaceports at least 35 kms from the coastline and would be used for launching starship rockets to the Moon, mars and even hypersonic travel around Earth.
The floating spaceports would be accessed via tunnels dug under the water and Musk-owned The Boring Company would construct those.
"SpaceX is building floating, superheavy-class spaceports for Mars, Moon & hypersonic travel around Earth," Musk tweeted.
Starship is the next-generation transportation system designed to take people to and from the moon, Mars and anywhere on Earth.
Musk had earlier tweeted that most Starship spaceports will probably need to be around 35 kms offshore