probably not. a typical 3br house directly comsumes less than 40 kwh per month. to put that in perspective, that's about the amount of energy contained in a sin

probably not. a typical 3br house directly comsumes less than 40 kwh per month. to put that in perspective, that's about the amount of energy contained in a single gallon of gas. large ships are the most efficient way to move bulk goods, but when carrying a bunch of people in their own little apartments, the per pax fuel efficiency is somewhere between a typical car and a passenger plane. I would be very surprised if the constraints of living on a cruise ship are anywhere near enough to offset the fact that they spend most of their time moving tons of people around to places they don't need to go. if you want to save the environment, take public transit to work and vacation in places that are connected by rail.