NDLNo Decompression Limit
No Decompression Limit for selected breathing gas and bottom time.
NDL is how long you can stay at a depth and still ascend directly to the surface without mandatory decompression stops.
How it works
Bühlmann ZH‑L16C, 16 tissue compartments, GF high 97 %
- Model nitrogen loading is tracked in 16 compartments with half‑times from 4 to 635 minutes
- Limit the NDL ends when the first compartment would exceed its surface M‑value
- Depth limited to the MOD of the gas at ppO₂ 1.6
Example
- Gas
- Air
- Depth
- 24 m
- NDL
- 26 min
How it works
Bühlmann ZH‑L16C, 16 tissue compartments, GF high 97 %
- Model nitrogen loading is tracked in 16 compartments with half‑times from 4 to 635 minutes
- Limit the NDL ends when the first compartment would exceed its surface M‑value
- Depth limited to the MOD of the gas at ppO₂ 1.6
Example
- Gas
- Air
- Depth
- 70 ft
- NDL
- 35 min
Take it to the dive site
The same calculator works offline in the Deep Tools app, together with the dive planner, dive log and blender.
