Oriskany Trip My first trip to the "Great Carrier Reef" was 2014. I've been there a few times since, but the most recent trip was with a few friends in 2025. The Oriskany is an awesome dive site, especially for technical divers with wreck penetration [...]
Is CCR for Me? Disclaimer: I make a living selling rebreathers and rebreather training. Therefore, I have a vested interest in getting people to take classes and buy units. However, I routinely tell people that a CCR isn't a good option - because it isn't for them. I put this text together to [...]
CCR Setpoints A crucial concept for CCR divers is the relationship between loop volume, loop PO2, and buoyancy. All three work together. Our loop is what we’re breathing and is an airspace. This airspace effects our buoyancy control. As we descend, the loop volume decreases. We need to add [...]
Scuba O-rings O-rings are small but essential parts of scuba diving gear, sealing connections in regulators, hoses, tank valves, and other equipment. A damaged or missing O-ring can cause leaks or equipment failure, which is why having the right replacements on hand is crucial for solving problems in the field. This guide [...]
Common Scuba Hose Lengths Choosing the right hose lengths for your scuba setup is essential for underwater comfort, safety, and efficiency. Whether you're diving recreationally with a single tank, exploring caves in a sidemount configuration, or using a rebreather, the correct hose lengths can make a big difference in streamlining your gear and [...]
Petrel 3 Warranty In September 2024 Shearwater released a bulletin on their Petrel 3 computers. This bulletin identified a problem with the computers, open circuit, and closed circuit. The problem can cause a failure, during a dive, which resets and disables the computer. They immediately released this bulletin and, [...]
Choosing a Rebreather You want a rebreather but - which one? There are dozens of closed-circuit rebreathers available and they all claim to be the best. Is there one that's better than the other? How do you pick the right unit? What is the best rebreather? There is no single best rebreather. That does [...]
Stage Rigging This guide shows step-by-step photos for building a stage kit for stage or deco cylinders used in technical diving. You'll need: ~72inches of paracord 12in section of Low-Pressure regulator hose OR 5/16 fuel tubing 2 medium-sized bolt snaps Speed clamp with protective tubing Tools Lighter Scissors Short section [...]
Diving Equations Highlights of important math for diving - primarily focused on deco diving. Depth to Pressure To convert feet to a unit of pressure (atmosphere or bar) we take the depth, divide by 33 (how many feet are in an atmosphere), and remember to add the surface atmosphere. [...]
Deco Dive Planning This page is a supplementary page for decompression divers enrolled in a decompression course or certified decompression divers looking to refresh. You can not complete a decompression dive with a reasonable margin of risk management with this guide alone. It's a supplement. For dive planning [...]
