The following submission statement was provided by /u/ForHidingSquirrels:

The amounts of space we have on oceans surfaces with more than enough offer, wind and solar generation opportunities to power the world. In fact, many times over - as well, all energy. at some point large scale, wind and solar using the same powerlines might become pretty consistent energy generators. Add in batteries and hydrogen maybe, and we’ve got a resilient system.

Please reply to OP's comment here: https://old.reddit.com/r/Futurology/comments/zy4194/robotic_boats_are_surveying_seabeds_at_offshore/j23m6jw/