Used for the transportation of liquid cargo. Most often, this type of vessel transports oil and oil products, but also transports water, food oils and other liquid cargoes. Simplifying the above: everything that can be poured is transported by tanker.

The different set of tankers vary in size (similar to bulk carriers) and in the type of cargo carried.

The size classification for tankers is identical to that for bulk carriers, although there are exceptions:

VLCC (Very Large Crude Carrier) – have a deadweight of 60,000 – 320,000 tons. Such vessels are used to transport oil from the Middle East to the Gulf of Mexico.

ULCC (Ultra Large Crude Carrier) – have a deadweight of more than 320,000 tons, however, such giants are not so often used due to their narrow focus.