Course duration: 1 pool session (optional), 1 theory session, 2 practical applications and 4 dives over 2 days
Prerequisites: Tec 45 Diver or equivalent, PADI Rescue Diver or equivalent, minimum age 18, minimum of 100 logged dives of which at least 20 were made with enriched air nitrox over 18m and 15 dives (with or without EANx) were deeper than 30m, physicians approval to dive.
Course cost: includes gas, use of stage cylinders if required and certification fee: £450 or £550 with equipment hire
Course description: This course further builds on the Tec 40 and Tec 45 courses. The course qualifies divers to use air, enriched air and oxygen to conduct multiple level decompression dives to 50 meters using standard open circuit, multiple cylinder tec diving equipment using 2 decompression gases (enriched air nitrox and / or oxygen) to accelerate or add conservatism to the decompression