I think a very significant (probably even dominant) fraction of this geoengineering project would not be the industrial aspect but the organisational and political aspects. Building some ships sounds very doable (although I don’t know to what extend “spraying water” and “autonomous” are assembly-line projects, do we already have industries that make ships like this?) , coordinating around letting them sail around and alter the atmosphere less so.
I think a very significant (probably even dominant) fraction of this geoengineering project would not be the industrial aspect but the organisational and political aspects. Building some ships sounds very doable (although I don’t know to what extend “spraying water” and “autonomous” are assembly-line projects, do we already have industries that make ships like this?) , coordinating around letting them sail around and alter the atmosphere less so.