600 years ago Native Americans enjoyed the clean waters of our nations rivers. They also utilized black thick liquids for health remedies. In other parts of the world this black liquid was called oil. Soon settlers came to north america and started to use this native oil and even drilled deep to establish our nations first oil wells. As years passed this oil was refined into an oil that produced heat in our nations ships, turning water into steam to power our ships. World war times made it necessary to carry this oil in special ships and transfer the needed oil to surface war ships while they were moving far out at sea. These ships were plentiful and it seemed they produced rivers of oil out to sea. They were not called tankers, they were called oilers. It became standard for the navy to name these oilers after rivers that Native American's named.