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Free Decompression Software for PADI Tec 40 divers


Free decompression tables for Tec 40 type divers are given on the Tec 40 decompression table page.  A little more information on PADI's TecRec Tec 40 class is given below.  Whether using decompression dive tables or the software, reading that page should be the starting point to understand the Tec 40 system and assumptions.  While decompression tables for the Tec 40 diver are given on that page, as discussed there, decompression software can also be used such as Departure's decompression software.  A full description of Departure and why its decompression software is different is given elsewhere on this site, but it's free basic version works very well for the Tec 40 diver.  While Departure has restrictions in its basic version such as depth limitations (53 meters/175 feet) and only 2 decompression gases being allowed (as compared to 6 in the fully operation mode), the beginning technical diver such as a Tec40 diver will find it very functional for the type of dives they will be planning.  The basic free decompression software can be downloaded through the link at the top of this page.

PADI's Tec 40 class

The PADI Tec 40 course introduces divers to limited decompression diving within recreational depth limits. Although divers who want to continue tec diver training are encouraged to complete the Tec 40 class in complete tech diving gear, it is not required and the Tec 40 equipment requirements are slightly more than those of recreational divers.

In the Tec 40 class, a diver will:
1) learn how to use decompression software (such as Departure) and dive computers to plan and make decompression dives with no more than 10 minutes of total decompression and not deeper than 40 metres/130 feet; and
2) use a single cylinder of decompression gas with up to 50 percent oxygen (EAN50) to add conservatism to the required decompression.

The Tec 40 is the entry point into the technical range as the Tec 40 class provides a transition from recreational to technical diving.  Although the use of full tech gear (i.e. doubles and wings) is allowed and desirable if one is going to continue their technical diving education, the Tec 40 class is designed to allow the use of slightly modified recreational equipment.  The limit for a Tec40 diver is 40 meters/130 feet with a limit of 10 minutes of required decompression. They may use any nitrox mix with up to 50% oxygen content or air.  To enroll on the course, a diver must only be:

1) the equivalent of a PADI Advanced Open Water diver
2) a PADI (or equivalent) Deep diver
3) certified in enriched air nitrox (EAN) with:
          a) at least 30 logged dives deeper than 60 feet
          b) with at least 10 of those dives being on nitrox

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