Fishing masters and officers perform some or all of the following duties:
- Command fishing vessels to catch fish and other marine life.
- Determine areas for fishing, plot courses and compute navigational positions using compasses, charts, tables and other aids.
- Steer vessels and operate navigational instruments and electronic fishing aids such as echo sounders and chart plotters.
- Direct fishing operations and supervise crew activities.
- Record fishing progress, crew activities, weather and sea conditions on ship's log.
- Select and train vessel crews.