Links
43 technical diving resources, grouped by what you came for. Every link was fetched and checked; dead ones have been removed.
Training agencies
Certifying bodies for decompression, mixed gas, rebreather and overhead diving.
- GUE — Global Underwater Explorers(opens in a new tab)
DIR training built around standardised equipment and team procedure. Strict prerequisites, exploration focus.
gue.com
- IANTD(opens in a new tab)
One of the original mixed-gas and rebreather agencies. Full technical, cave and wreck progressions.
iantd.com
- TDI — Technical Diving International(opens in a new tab)not machine-verified
The largest technical agency by certification volume. Modular courses in trimix, rebreather and cave.
tdisdi.com
- PADI TecRec(opens in a new tab)
Structured technical and rebreather progression with staged depth limits.
padi.com
- SSI Extended Range(opens in a new tab)
Technical programmes covering decompression procedures, trimix and equipment configuration.
divessi.com
- NAUI Technical(opens in a new tab)
Decompression, trimix and rebreather courses with wide instructor latitude on standards.
naui.org
- BSAC technical courses(opens in a new tab)
UK club-based training with a strong emphasis on self-reliance and dive planning.
bsac.com
- UTD — Unified Team Diving(opens in a new tab)
DIR-derived team diving with unified equipment configuration.
utdscubadiving.com
- ISE — Inner Space Explorers(opens in a new tab)
Cave and exploration-focused technical training.
is-expl.com
- RESA — Rebreather Education and Safety Association(opens in a new tab)
Cross-agency body setting minimum rebreather training and unit-testing standards.
rebreather.org
Decompression and diving medicine
Peer-reviewed literature and the physiology behind the numbers this app produces.
- Diving and Hyperbaric Medicine (DHM)(opens in a new tab)
The SPUMS/EUBS journal. Full issues free after embargo — the primary source for current decompression and oxygen-toxicity research.
dhmjournal.com
- UHMS — Undersea and Hyperbaric Medicine journal(opens in a new tab)
Archive of UHM journal PDFs covering diving physiology, DCS treatment and hyperbaric medicine.
uhms.org
- The Theoretical Diver(opens in a new tab)
Decompression modelling worked through in the open — Bühlmann, VPM and gradient factors with the mathematics shown.
thetheoreticaldiver.org
- Shearwater community blog(opens in a new tab)
Long-form articles on decompression algorithms, gradient factors and dive computer behaviour.
shearwater.com
- InDEPTH(opens in a new tab)
GUE-published magazine covering technical diving practice, incident analysis and physiology.
indepthmag.com
- Fit to Dive(opens in a new tab)not machine-verified
Diver fitness and medical-screening guidance.
fittodive.org
Gas blending and analysis
Suppliers of blending equipment, analysers and the fittings that go with them.
- Divesoft(opens in a new tab)
Oxygen and helium analysers, rebreathers and dive computers. The analysers are a technical-diving default.
divesoft.com
- Narked at 90(opens in a new tab)not machine-verified
UK builder of gas analysers, blending panels and rebreather electronics.
narkedat90.com
- Dive Gear Express(opens in a new tab)not machine-verified
US technical retailer with unusually detailed reference articles on blending, oxygen service and cylinder care.
divegearexpress.com
- Light Monkey(opens in a new tab)
Blending equipment, oxygen-clean fittings, lights and manifolds.
lightmonkey.us
- Northeast Scuba Supply(opens in a new tab)
Technical gear and gas-handling components.
northeastscubasupply.com
- Tec-Divesysteme(opens in a new tab)
European technical supplier including blending hardware.
tec-divesysteme.com
Instruments and dive computers
The hardware that runs the decompression model underwater.
- Shearwater Research(opens in a new tab)
Perdix, Petrel and Teric computers. Bühlmann ZHL-16C with gradient factors, plus VPM-B on some models.
shearwater.com
- Heinrichs Weikamp(opens in a new tab)
OSTC computers, open firmware, and CCR monitoring hardware.
hwdiving.com
- Ratio Computers(opens in a new tab)
Italian dive computers with multi-gas and CCR support.
ratio-computers.com
- Halcyon Dive Systems(opens in a new tab)
DIR harnesses, wings, lights and the Halcyon CCR.
halcyon.net
- XDeep(opens in a new tab)
Sidemount and backmount harness systems, wings and hard cases.
xdeep.eu
Rebreathers
Manufacturers of closed and semi-closed circuit units.
- AP Diving(opens in a new tab)
Inspiration and Evolution CCRs, plus their own training resources.
apdiving.com
- JJ-CCR(opens in a new tab)
Danish back-mounted CCR, widely used for exploration and cave.
jj-ccr.com
- rEvo Rebreathers(opens in a new tab)
Belgian CCR with dual radial scrubbers and temperature-stick monitoring.
revo-rebreathers.com
- KISS Rebreathers(opens in a new tab)
Mechanically simple manual and electronic CCRs.
kissrebreathers.com
- Fathom CCR(opens in a new tab)
Minimalist mCCR designed around cave exploration.
fathomdive.com
- Poseidon rebreathers(opens in a new tab)
SE7EN and MkVI units with automated pre-dive checks.
poseidon.com
- Innerspace Systems (Megalodon)(opens in a new tab)
The Megalodon CCR and its variants.
megccr.com
- Lungfish Dive Systems(opens in a new tab)
Norwegian CCR manufacturer.
lungfishdivesystems.com
- The Rebreather Site(opens in a new tab)
Long-running independent archive documenting rebreather models, history and modifications.
therebreathersite.nl
Community and publications
Where technical divers argue, publish and share trip reports.
- ScubaBoard — technical diving(opens in a new tab)
The largest scuba forum. Technical subforum has active instructors and equipment manufacturers.
scubaboard.com
- DeeperBlue — technical diving(opens in a new tab)
Smaller technical forum with a strong freediving and European presence.
forums.deeperblue.com
- X-Ray Magazine(opens in a new tab)
Free international dive magazine covering technical and expedition diving.
xray-mag.com
- Advanced Diver Magazine(opens in a new tab)
Exploration, cave and wreck reporting.
advanceddiver.com
- The Technical Diver(opens in a new tab)
Independent technical diving writing and equipment reviews.
thetechnicaldiver.com
- GUE on YouTube(opens in a new tab)
Conference talks, skills demonstrations and project documentaries.
youtube.com
- Richard Harris talks(opens in a new tab)
Lecture playlist from the cave diver and anaesthetist, largely on diving physiology and risk.
youtube.com
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