Friend and colleague, Gareth Lock, a PhD candidate from the UK, is undertaking research into the role of human factors in SCUBA diving incidents, using a modified aviation-based model to achieve this. You can find out more about this worthwhile and informative project HERE –please support and share. His work is really important to helping us all better understand ourselves!
Professional rebreather instructor Jill Heinerth helps divers navigate the complex, and sometimes intimidating world of rebreather diving. Providing clear, candid and straightforward information based on her decades of exploration and teaching experience, Jill leads readers through the history, basics and technical aspects of this remarkable, silent approach to diving. Rebreather diving is one of the fastest growing segments of the underwater community. But, until now, easy-to-understand advice and guidance for novices has been hard to find. If you are looking to purchase a rebreather, this book is an opportunity to learn how to be a wise consumer and make the choice that is right for you. If you already own a rebreather and want a review of academics, new trends and the future of CCR diving, then this book will offer a chance to gather new information. If you want to prevent yourself from joining the ranks of 20 or so people who perish each year on rebreathers, this book will inform you about accident analysis and prevention. A valuable tool and a good read for beginners and accomplished SCUBA divers, The Basics of Rebreather Diving is generously illustrated with full color photographs, charts and drawings. Jill adds just the right amount of rich personal anecdotes to provide an insider's viewpoint about the past, present and future of rebreather diving. Anyone considering or currently diving a rebreather, will find in this book a wealth of knowledge and an enjoyable addition to their diving library. With a foreword by "Shadow Divers" Richie Kohler. Place your ORDER HERE.
Amazon PRIME Members can now order Jill Heinerth's The Basics of Rebreather Diving and get FREE 2 day shipping. Must order from THIS LINK. Thanks.
iPad Forms for your Rebreather
Several months ago, I made a post on RebreatherPro suggesting that people put their checklists on their iPads or other tablet devices. It is really convenient and saves paper!
Ron Goodman sent along some additional suggestions for those that do not have AcrobatPro on their computer. Ron says: " After looking at your article on rebreather check lists for the iPad, I started to play around with the idea. The problem I ran into was needing Acrobat Pro to create the form, which is an expensive application to purchase for a single use. I found a website,www.pdfescape.com, which will let you upload PDF files, convert them into PDF forms, and download them again, for free. They work fine when moved over to the iPad and opened with PDF Expert. It might be worth mentioning the next time you update the article."
Thanks for the great tip Ron thanks for being a great role model using checklists every time you dive your CCR!
Quick Buoyancy Tips
If you are struggling with buoyancy and trim on your rebreather, there are a few things you can consider:
If your feet are heavy, get lighter fins. Heavy fins, such as the popular Jet Fin design, were originally designed for divers wearing thick neoprene
drysuits. Current membrane-style dry suits rarely require negative fins unless you are diving with thick buoyant undergarments. Try leg gaitors to keep air out of your feet and consider a dry suit that is equipped with separate boots.
Get a rebreather specific wing. Not all rebreathers come with a harness and wing. There are wings that are specially designed to deal with trim issues faced by rebreather divers, optimizing the buoyancy cells lower towards the hips.
Snug up your counterlungs. The closer your counterlungs are to matching the anatomical position of your own lungs, the better they will breathe. If they are snugged up tight, then trim changes are minimized as you shift position in the water column. Think of them as a physiological extension of your own body. If they are loose and flop around, your buoyancy will shift with the air movement.
Go to the dentist. The next time you are in the dentist’s chair, ask her for her retired lead aprons. This convenient material can be cut into small trim weights or rolled into tiny packages that can adjust your trim. It can even be sewn into your dry suit underwear in the shoulder region if that is where the lead is needed.
Sheet lead. I once tried heating lead in a cast iron pan in an effort to pour my own custom weights. I probably added to my future dementia in the process. Now I purchase sheet lead from McMaster Carr or other suppliers. This lead is thin enough to cut with scissors and can be shaped into custom pieces or wrapped around the top of a small onboard cylinder. Team up with friends and buy a roll to share.
Shot pockets. Several manufacturers produce variable ballast pockets. These simple grommeted sleeves will hold 2 to 4 pounds of lead shot, which can be purchased at Walmart in the hunting section.
Custom trim weights. Many online dive shops carry custom lead or steel rebreather weights that are designed to fit specific rebreathers. This is likely the most expensive option, but it looks clean and well trimmed.
- Jill Heinerth