As a long time Tec Diver and proponent of Self-Reliant diving (not necessarily without a buddy), I've been watching with interest the development of Sidemount Diving for open water recreational and tec diving applications. Developed in cave divng to negotiate sumps and low overhead environments, Sidemount diving offers the opportunity to have a streamlined, comfortable rig with gas redundancy and great equipment flexibility.
With the advent of commercially available Sidemount BCD systems such as the Hollis SMS100 and the DiveRite Nomad EXP, among others, the benefits of Sidemount diving are now accessible to all divers. These benefits include gas supply, safety, comfort and flexibility.
For recreational divers, Sidemount Diving (perhaps using smaller cylinders) offers some great benefits, including:
- True gas redundancy - although your overall gas supply might be about the same (depending on tanks used), you have redundancy in the event that you have a first stage or valve failure
- Gas supply - for people who "like their air", sidemount is a great way of having more gas available for a dive.
- Versatility - sidemount harnesses like the Hollis SMS100 are capable of being used for both traditional single tank backmount and double tank sidemount setups.
- Comfort - for those with back or knee issues that find walking around with backmount single or double tanks difficult, sidemount diving offers an approach where the tanks are carried without significantly changing your centre of gravity
For tec divers, Sidemount Diving offers several key advantages over backmount doubles, including:
- Streamlining - the tanks are at the diver's sides, not behind your back, out of sight. For trained penetration divers, this goes one step further, allowing you to enter low overhead environments
- Safety - with the tank valves in front of you, its much easier to diagnose issues with valves and/or regulator first stages. A gas shut-down drill is greatly simplified with Sidemount
- Convenience and flexibility - for the traveling tec diver, its generally easier to obtain two single tanks in remote locations than it is to arrange doubles with a isolator manifold. For occasional tec divers, sidemount allows you to have cylinders available for both single tank and sidemount usage
Sidemount is one of the appropriate configurations for those interested in Self-Reliant Diving, as it provides complete first stage and tank valve redundancy. PADI TecRec Instructors who are also Sidemount Instructors can teach PADI TecRec courses using Sidemount rather than the traditional backmount doubles configuration.
In order to learn all that I could about Sidemount Diving, I have taken 2 instructor courses with leadning instructor trainers - Grant Graves and Jeff Loflin. Grant is a long time tec and cave diver, PADI Course Director and innovator of the Precision Diving concept, and has been sidemount diving primarily in caves for many years. Jeff is also a PADI Course Director, and is a driving force behind the adoption of open water sidemount diving, globally. Jeff is also a design consultant for the Hollis SMS100 sidemount buoyancy system. I have also read and watched everything I have been able to about sidemount diving (including the wonderful Sidemount Profiles book by Brian Kakuk and Jill Heinerth), and of course, I've done as many sidemount dives as I have been able.
I am pleased now to be able to offer the PADI Sidemount Instructor Course (as well as PADI diver level sidemount training), and look forward to introducing people to this wonderful way of diving.