Below is the list of people registered in the IMO database. Each observer is given a unique IMO code that is used in the database to link people to data.
| IMO Code | First name | Last name | Country | |
|---|---|---|---|---|
| ABANA | NADA | ABANDA | Jordan | |
| ABBJ | J. | ABBOTT | United Kingdom | |
| ABBJI | JIM | ABBOT | United Kingdom | |
| ABBPA | PATRICK | ABBOT | United States | |
| ABDAH | AHMAD | ABDO | Jordan | |
| ABDHA | HAITHAM | ABDEL MAJID | Jordan | |
| ABDSA | SANA'A | ABDO | Jordan | |
| ABDZA | ZAID | ABDULLAH | Jordan | |
| ABEGH | GHAZALAHA | AL-ABED | Jordan | |
| ABEJO | JOSE LUIS | ABELLAN MARTINEZ | Spain | |
| ABEMA | MASAHIRO | ABE | Japan | |
| ABEOR | ORIOL | ABELLAN | Spain | |
| ABESI | SINSUKE | ABE | Japan | |
| ABEST | STEPHEN | ABELA | Malta | |
| ABEYU | YUUKO | ABE | Japan |