NDL & Repetitive Dive Helper

For recreational, no-decompression air dives. Enter your planned depth and bottom time to see the no-decompression limit (NDL) reference and a rough repetitive dive recommendation. Based on published SSI tables. Always follow your training and your dive computer.

Note: For Nitrox, NDL is referenced using the Equivalent Air Depth (EAD). Your planned depth may display a different table depth because EAD is rounded up to the next deeper table level per standard table usage.

Show SSI table references

Table 1 – NDL & Group

SSI Table 1 – No-Decompression Limits and Group Designation

Table 2 – Surface Interval / Group

SSI Table 2 – Residual Nitrogen Timetable for Repetitive Dives

Table 3 – Adjusted NDL

SSI Table 3 – Residual Nitrogen Times (Adjusted NDL)

Tip: Place images at /public/ssi-table-1.png, /public/ssi-table-2.png, and /public/ssi-table-3.png.