On a somewhat serious note… not that the other replies aren’t correct; This has applications for working in the fields of marketing, sales and shipping of ANY commodity.
ALL the petroleum companies (both oil producers and marketers) have guys who do this day in and day out, arranging shipping, and purchase/resale of cargoes world wide.
If this has an interest to you, I am sure you could pursue it. But I am not sure that you HAVE to have a BS from a Maritime academy to enter this field.
I don’t specifically know how to successfully enter this field, since I (and most others on this forum are/am) involved in the actual marine transportation end of this job, but maybe some will chime in with the inside hows and whys on how this works.
To give you My understanding of how this works (not that my understanding is completely correct or Germain): When a customer wants Oil delivered they call several suppliers. Some of these suppliers are Oil companies. Some are oil marketers. (Look up ‘Morgan Stanley’ Or ‘Kinder Morgan’ for an idea of some particular company’s that comes to mind) Regardless of who is buying petroleum, many groups are in the business of buying huge lots of oil on the speculation market, then reselling it to the highest bidder. A form of international business is working the phone lines, to buy, sell, and arrange delivery of these goods.
Now to make it even more complicated, the actual delivery of the product is done by several means (depending on where the product is coming from, Domestic, foreign, or both) Some delivery is by Pipeline, ships, tugs and barges, and truck. So you can see that a degree from an academy is not necessarily a prerequisite to work in the field. although if you wanted to work at a company that is primarily dependent on using vessels for delivery it may be a factor in getting hired.