Earlier quoted context omitted.
Anyone got a spare oil tanker? :-) I only slightly kid, makes me wonder how quickly I could acquire a number of oil storage units. edit: this tanker is off the gulf coast right now... https://horizonship.com/ship/274m-suezmax-crude-oil-carrier-...
Just with a cursory "oil tanker for sale" search, they appear to be for sale in the $10-20MM range.
Of course, the next question is who pays for transport to/from the tanker, labor, dock fees, employees in ship (unless you can simply "park" it for a fee)