I looked at NAUI's site but could not discern what the guide could and could not do. I found this at the NSS/CDS site:
Cave Diver Supervisor
- This program is designed to provide training in dive leadership to competent, certified cave divers who will lead or guide other certified cave divers on cave dives. A Cave Diver Supervisor is a leadership or instructor-in-training rating.
- Certified cave diver supervisors are placed in a role to continue developing the proficiency of certified cavern and cave divers in the overhead environment.
- All NSS-CDS Cave Diver instructor candidates must complete this class at the beginning of their internship, and prior to being issued an internship card.
- All guides are encouraged to take this program as part of their development as a guide.
- Cave Diver Supervisors may supervise dives with any level of certified cavern and cave divers from a recognized cave diver training agency where the cave diver supervisor also possesses that qualification or rating.
Personally, I had no idea that this even existed. Ditto with the NAUI credential. Not sure if having this first makes NAUI's any better, though. I would like to see what it entails. If number one is not clear enough that they all must possess the required certs, number five makes it crystal clear. I like that.
Here's from the NAUI S&P.
Cave Guide (Technical Support Leader)
OVERVIEW AND QUALIFICATIONS
This course is to provide the diver with the skills and knowledge needed to minimize risks while leading guided tours in caverns and caves.
Upon successful completion of this course, graduates are considered competent to plan and execute guided tours only in portions of a cavern or cave in which they have completed at least 25 previous dives.
WHO MAY CONDUCT
• Any active-status NAUI Instructor who:
○ Is certified as a NAUI Cave Diver Level II or equivalent, and
○ Has completed the NAUI Technical Diving Instructor course and completed the instructor application process and received Technical Instructor designation to teach this course from the NAUI Training Department.
PREREQUISITES
• Age. Minimum is 18 years by the water phase of the course.
• Certification/Experience/Knowledge.
○ NAUI Divemaster or equivalent.
○ NAUI Cave Level II Diver, or
○ Certification as a Decompression Diver and Full Cave Diver by another agency and completion of a NTEC orientation seminar.
○ Proof of at least 100 logged cave dives after prerequisite cave certification, with at least of 50 hours of bottom time.
○ The instructor is to ensure adequate student knowledge and capability before any open water training and shall use skill or other evaluations to do so. One open water dive (which does not count toward the minimum number of dives required for the course) may be used as a screening and evaluation dive. This is not required when the student’s diving proficiencies are well known to the instructor.