An Oil Tanker (or Petroleum Tanker) is a ship used for transporting petroleum across water that is a merchant ship designed for the bulk transport of oil.
Example Article of the Oil Tanker:
Oil Tanker Off Yemen Coast Close To Exploding: By Irina Slav, Oil Price on 23 July 2019 - An oil tanker idling off the coast of Yemen may be nearing an explosion, The Guardian reports citing experts and a warning by the UN-recognized Yemeni government. The government, which is fighting the Houthi rebels with the support of Saudi Arabia and the UAE, wrote in a letter to the UN that the situation is bad and deteriorating, and that there is an “imminent environmental and humanitarian catastrophe in the Red Sea”. ...