MN90 – Decompression Tables

Recreational Planning Air / Nitrox (with adaptation)

Overview

The MN90 tables were developed by the French Navy (Marine Nationale). They remain an educational reference in many training courses. They provide stop times based on depth and bottom time.

Official Data

Educational reference based on the MN90 table (French Navy), widely distributed via the FFESSM.

MN90 – PDF (FFESSM AURA)

Source: FFESSM (extract/presentation of MN90 tables).

Table (HTML) – Integration in progress

The full table is voluminous. Responsive HTML conversion in progress (faithful copy of the PDF), depth × time → stops.

Preview (structure):

Depth	Bottom Time	Stops (m/min)	Remarks
—	—	—	—

Usage Notes

Adherence to the calculation protocol (max depth reached, residual nitrogen, surface interval, etc.).
Safety rules: ascent rate, safety stop, hydration, rest.