Collection: Computers & Electronics

Mastering Conservatism: Gradient Factors (GF) 

Most modern technical computers use the Bühlmann ZHL-16C algorithm. While early technical diving favored "Deep Stops", modern decompression science has shifted. We now understand that stopping too deep can actually increase your total nitrogen load in "slow" tissues.

Standard vs. Custom Settings:

• The Modern Standard (50/85): Many expedition divers have moved to a 50/85 setting (Currently Medium Conservatism on Shearwater Perdix 2). This allows for a slightly more efficient ascent by starting deco a little shallower (GF Low 50) while maintaining a safe 15% buffer from the M-Value at the surface (GF High 85).
• The Technical Baseline (30/70): While still a default on many computers, this is now considered "old school" conservatism. It forces very deep stops and longer shallow deco.

Oceanauts Real-Time Tip: SurfGF If you use a Shearwater, keep the SurfGF (Surface Gradient Factor) on your home screen. This tells you exactly what your GF High would be if you surfaced right now. In an emergency, knowing you are at a "SurfGF 70" gives you the confidence to surface safely, whereas a "SurfGF 95" tells you that you are riding a bit closer to that fine line.