The DOF group operates within three vessel segments in relation to strategic types of activities and vessel types - Platform Supply Vessels (PSV), Anchor Handling Tug Supply Vessels (AHTS) and Construction Support Vessels/Subsea Vessels (CSV). In addition, the group also owns and operates a fleet of state of the art and highly sophisticated ROV. The DOF groups’ technically diversified fleet consists of innovative vessels specialized for their operational purpose.
DOF fleet is owned by the following companies:
| PSV | AHTS | CSV | Total fleet | |
| DOF ASA | 16 | 3 | 4 | 23 |
| NORSKAN OFFSHORE | 7 | 12 | 2 | 21 |
| DOF SUBSEA AS | 0 | 0 | 22 | 22 |
| DOF INSTALLER ASA | 0 | 0 | 3 | 3 |
| AKER DOF DEEPWATER AS | 0 | 5 | 0 | 5 |
| Total Fleet | 23 | 20 | 31 | 74 |
