Comment by smachiz

It would be interesting to compare Carnival to the actual freight/crude vessels.

I have to imagine that all of that dwarfs carnival by a wide, wide margin.

But with flags of convenience, this is actually a semi-tough battle to fight, as they'll just reregister the ships somewhere else.

The low sulphur regulations coming into force in 2020 should help quite a bit in that these ships will have to burn cleaner fuel at the very least.