​​Kapal Jenis Oil Tanker dikategorikan dalam 7 kelompok :

1. Small tankers (< 10000 DWT)
2. Handysize tankers (10000 - 25000 DWT)
3. Handymax tankers (25000 - 55000 DWT)
4. Panamax tankers (55000 - 80000 DWT)
5. Aframax tankers (80000 - 120000 DWT)
6. Suezmax tankers (120000 - 170000 DWT)
7. VLCC (170000 - 330000 DWT)