From the specs at the bottom.
> Fuel capacity: 54,000 litres
That's a lot of fuel to be calling it "green"
> Fuel capacity: 54,000 litres
That's a lot of fuel to be calling it "green"
It doesn't have a wind turbine for electricity. Article mentions a 45 days at sea trip, for which they presumably want lights & cooking & entertainment for several people including crew.
Less efficiently generated, sure, but it's electricity they'd otherwise be using somewhere else.