So for the above, a 17m dive (use 18m, because the preceding set would be 15m, (so next deepest,) 40 minutes, exit on surface code E/1.įor an 18m dive of 90 minutes requires 12 minutes at 6m exiting on a surface code G/1 Decompression stops (for level 1) are at 6m and 9m. The Decompression Stop dive times are highlighted in a different colour.Įvery 6 rows or so the table is separated to make it easier to read, At this row, two (or three) extra rows are inserted containing decompression information, and Surfacing code.

exited after completing decompression stops) Table A, desaturated diver, to table G heavily saturated diver (i.e. The 7 different tables, relate to the retained Nitrogen saturation level at the start of each dive. Table format is the same for each set of tables. However, tables are an excellent teaching aid, so they have remained in the courses.ĪLL tables have the same format, you can move between the tables with ease. There was some discussion if the tables would be dropped from the training program. Using standard mixes and decompression gases. Introduced for the BSAC accelerated decompression courses.

These where developed for the BSAC Nitrox courses. Level 1 pressures greater than 984 millibar Unsurprisingly, for air!Īlthough they are quoted as Altitude tables. There are three table sets currently produced by the BSAC.

The original set include 4 altitude levels, 1, 2, 3, & 4. They include decompression data for dives that exceed No-Stop limits, as well as no-stop dives. The tables where developed by the BSAC with Dr Tom Hennessy in 1988. If you are that studious or keen, you can order them from the BSAC shop, or find them on E-bay! This is for and any other of you who are interested in decompression tables and theory.īSAC 88 tables are copyright, so I will not attempt to publish or link to pictures of the actual tables.

Bsac dive tables pdf