According to Vietnam Maritime Administration, there are 597 ship- owners in Vietnam of which only 33 of them own the ships of 10.000 DWTs and above. Among these, 25 ship-owners belong to the four largest corporations: Vietnam Shipping Lines (Vinalines), Vietnam Oil and Gas Group (Petro-Vietnam), Vietnam National Petroleum Group (Petrolimex) and Vietnam Shipbuilding Industry Corporation (SBIC).