Photo by Dawid Zawiła on Unsplash When I was 22 and started going to sea aboard commercial merchant vessels as a junior officer, I sailed aboard tankers carrying various petroleum products to ports on the coasts of the United States, the Caribbean and the Mediterranean. The tankers I sailed on in those days carried about 20,000 tons of a product such as gasoline or jet fuel which translates to about 7 million gallons. Now 7 million gallons of gasoline or jet fuel has a lot of