The NAUI EAN36 and EAN32 diving tables make planning dives relatively simple. Each table is in a familiar format made from high-impact, waterproof material.

The tables are designed for no-stop enriched air nitrox diving in the range of 40-130 fsw. Each depth schedule has contingency information for completing required decompression stops if they are needed. The EAN36 table has a range to 110 fsw (33 msw) and the EAN32 table has a range to 130 fsw (39 msw). The tables provide for single and multiple repetitive dives, with a handy workslate on the back. In addition the tables have a tolerance of +/- 1%. Meaning, that the 32% table can be used with analyzed gas in the 31-33% oxygen content range and the 36% table can be used with 35-37% oxygen enriched air mixtures. This feature makes these tables very versatile.

Table Origin

NAUI has chosen to use the NOAA nitrox tables as the basis for the NAUI tables. The NAUI EAN tables use the same 32 and 36% oxygen mixes, and provide the same no-stop times as those developed by NOAA. Because of the efficiency of these tables and the reliability of this type of decompression, the NOAA no-stop times are taken at face value, without additional conservative modifications like those felt by NAUI to be necessary for air diving. Two minor but familiar changes have been made. The first is in decompression stop depths; in the event a decompression stop is needed the "10 fsw stop" is taken at 15 fsw, as are any safety stops. The second modification is in the repetitive procedures. The surface interval necessary for a dive not to be repetitive is increased from 12 to 24 hr. This causes the repetitive group letter "A" to remain in effect for up to 24 hours following a dive, instead of the 12 hours used by NOAA and the US Navy.