Recreational dives are generally planned to allow direct ascent without mandatory staged decompression. Technical decompression intentionally creates an obligation.
That changes the emergency model completely. Gas planning becomes critical because direct ascent may no longer be the planned response to every problem — the diver must have enough gas to complete the decompression regardless of what goes wrong.
The course covers decompression theory, planning software and tables, staged ascents with gas switches, and the contingency planning that makes the obligation manageable.
What the course covers
- decompression theory and algorithm behaviour
- planning staged decompression with software and tables
- gas requirements including contingency reserves
- staged ascents and stop discipline
- managing a lost decompression gas
- equipment redundancy and failure analysis
The emergency model changes
In recreational diving, the answer to almost any problem is to end the dive and ascend. Once a decompression obligation exists, that option is gone.
Every failure has to be resolvable at depth or during a controlled ascent, which is why redundancy in gas, buoyancy and instrumentation stops being optional.
Buoyancy stops being cosmetic
Holding a stop at 6 metres for twenty minutes in swell, with a stage cylinder and changing buoyancy as gas is consumed, is a genuine skill.
Poor buoyancy becomes increasingly consequential when mandatory decompression or overhead environments are involved — which is why technical training front-loads trim and control work.
Common questions
Is decompression diving dangerous?
It carries risks that recreational diving is specifically designed to avoid. Managed with proper training, redundancy and conservative planning, it is undertaken safely by many divers.
Can my recreational computer handle decompression?
Many modern computers display decompression obligations, but technical diving generally uses computers with technical algorithms, gas switching support and a backup device or tables.