Duties:

Determined a ship's position, velocity, & direction in relationship to a course

Post Holders:

- Arex (USS Enterprise)
- Chekov, Pavel (USS Enterprise)
- DeSalle (USS Enterprise)
- Kevin Riley (USS Enterprise)
- Saavik (USS Enterprise)
- Ilia (2270s) (USS Enterprise)
- Tom Nellis (Antares)
- José Tyler (USS Enterprise)