I won’t argue the numbers ... aviation fuels are more my thing.
The principle remains, though. Private yachts, private jets, burn a bunch of fuel. Everybody involved, all the way back to the iron ore miners, is glad to have the business.
Ok I did research
Marine diesel is 475 usd a ton spot on USGULF
most 70 meter plus motor yachts have 500,000 to 1,000,000 capacity fuel in liters
Gallon = 3.78 liters
Hence
If full tank made of empty
1000000/3,78=264,550
316 gallons marine diesel number 2 per ton
264550/316=837 tonnes of diesel number 2 at 474/ton
Equals 396,000 bucks
It is possible
That’s equatorial circumnavigation and then some range