Online tools built for technical divers. Checklists, calculators, and gear references, no account needed.
Interactive GUE-protocol pre-dive checklist including CHAOS pre-breathe, Preparation, Assembly, Calibration, Supply, and CHAOS.
Full three-section pre-dive checklist for the JJ closed-circuit rebreather: assembly, pre-breathe, and post-dive actions.
Save your gear setups for different environments. Water type, tank system, exposure suit, fins, weights, all in one profile.
Calculate Equivalent Narcotic Depth for trimix and other mixed gases. Account for helium fraction and actual depth.
Official GUE decompression planning software. Links to the download page on gue.com.