The National Iranian Tanker Co. transports Iranian crude to export markets and is also responsible for the distribution of oil products to Iranian ports and island ports and islands located in the Persian Gulf.
The company, which operates the largest tanker fleet in the Middle East, also acts as an independent entity in contracts with foreign concerns for crude oil transportation based on prevailing international freight rates.

NITC, in observance of IMO (International Maritime Organization) regulations, has a huge project for replacing tankers, including the construction and purchase of 25 tankers with the total capacity of 6 million tons.

In recent years, NITC has taken great steps towards accomplishing enhanced management systems, maritime safety and transport, the results of which have been achieving an array of awards obtained including ISO 9002, ISO 14001 (for management), PMS (for maintenance and repair system), STCW (for maritime supervision systems) and ISMC (for maritime safety management).