There is a french company (https://unseenlabs.com/fr/) that specializes in tracking ship at sea through observing their RF emission from space. Cool tech. I'm pretty sure their main clients are not all civil...
At a glance, it sounds as if those power stations need to pay for themselves in a few hours per week, and as soon as you get more transmission capacity from Scotland they're dead.
Give those constraints, of course they must be expensive if they are to exist at all.
Nearly 40% of shipping volume worldwide is moving fossil fuels (coal, oil, gaz). The easiest way to reduce drastically shipping emission is reducing usage of fossil fuels...
We're talking about whether the shipping industry will choose to improve how their ships operate, but you're talking about new powerplants on land would remove the need to even have those/as-many ships at all.
Very neat! I'm hydrodynamics by background and I wondered a long time ago why this kind of approach was not used as I always found ocean waves to look awful in movies. Once you describe ocean sea state in frequency domain, it is quite easy to give to floating objects like ships realistic motions using what we called RAO in this field (linear operator). You can also model sea disturbance (diffracted and radiated waves) caused by an object in a similar fashion.
I visited conservatoire des arts et metiers museum in Paris a couple years ago. It is full of fascinating scientific devices from the past. Among then was the timbre analyser. I was blown away. A purely analogic spectrum analyser.
