I don&#x27;t really have a way to judge the scale. I&#x27;d guess the lion&#x27;s share of the operating costs go to the crew (60!).<p>Moving that thing&#x27;s fat ass around probably uses a ton of fuel. I&#x27;m sure marine diesel spews out its share of co2, but more than a jet? I thought boats were super efficient relative to air travel.<p>I guess if your point is, rich guys screwing around shouldn&#x27;t produce CO2, then, yeah, anything over 0 is bad. That seems unrealistic. any idea how to get a handle on how bad it is? how many cars worth of pollution it makes?