Fuel oil tankers are specialized vehicles or vessels designed for the transportation of fuel oil, a critical energy source for various industries. For land - based tankers, large - capacity tanks made from materials like steel or stainless steel are used to store and transport fuel oil. Maritime fuel oil tankers are massive vessels capable of carrying vast quantities of fuel oil across long distances. Both types are equipped with efficient pumping systems for loading and unloading, along with safety features such as double - hulls, emergency shut - off valves, and leak - detection systems. These tankers play a vital role in the energy supply chain, ensuring a reliable distribution of fuel oil to power plants, ships, and other consumers.