Now THAT is thinking ahead
And, not to worry:
"...And we've partnered with Eco-Logic to re-forest a recently devastated area in Guatemala, paying for the planting of enough trees to offset the carbon emissions of each passenger on the Nation cruise."
Well that is a relief!
But... wouldn't each passenger emit carbon even when not on the Nation cruise? Perhaps we could inspire each potential Nation cruiser to hold his breath for the next 20 years to cure Global Warming.