Operators and their activities can be grouped into the following categories:
- Organizers of vessels that carry 13-200 passengers and are making landings.
- Organizers of vessels that carry 201-500 passengers and are making landings.
- Organizers of vessels making no landings (cruise only). This includes all vessels carrying more than 500 passengers.
- Organizers of land operations.
- Organizers of air operations with over-flights only.
- Organizers of air/cruise operations.
- Organizers of sailing or motor vessels that carry 12 or fewer passengers.