ship_type parameter| Type Number | Ship Type |
|---|---|
| 20-29 | Wing-in-Ground (WIG) |
| 30 | Fishing Ship |
| 31 | Tug |
| 32 | Tug (length of ship > 200m or breadth of ship > 25m) |
| 33 | Dredger |
| 34 | Diving Support Vessel |
| 35 | Military Vessel |
| 36 | Sailing Vessel |
| 37 | Pleasure Craft |
| 40-49 | High-speed Vessel |
| 50 | Pilot Vessel |
| 51 | Search and Rescue Vessel |
| 52 | Tug |
| 53 | Port Supply Vessel |
| 54 | Pollution Control Vessel |
| 55 | Patrol Vessel |
| 56 | Spare - for assignment to local vessels |
| 57 | Spare - for assignment to local vessels |
| 58 | Hospital Ship |
| 59 | Ships complying with Resolution 18 (Mob-83) |
| 60-69 | Passenger Ship |
| 70-79 | Cargo Ship |
| 80-89 | Oil Tanker |
| 90-99 | Other Vessel |
| 100 | Container Ship |
| 255 | Invalid value, displays as 255 when information cannot be correctly obtained |
| Other values | Other values represent unknown types |