Think of Tec 40 as your intro to tec diving. You’ll get to dive in the full tec rig and practice all the key tec skills. At Helldivers our approach is to make this a course that lays the bedrock for all future tec courses. You can also do this course in either backmount or sidemount.
The course takes 3 days to complete, we start with a day of theory and kit set up before setting off to a dive site for a couple of rounds of shallow water skills. On the last day we do a simulated deco dive and then a real deco dive to qualify. Upon qualification you’ll be able to do 10 minutes of deco at 40m using a stage of up to 50% to pad your deco. If you would like to do Tec 40 in sidemount but haven't done it before you should do a basic level sidemount course in advance. It is possible to combine the sidemount and Tec 40 courses together which will take between 1-2 extra days. If you're finding the whole sidemount vs backmount thing a bit difficult to decide on then have a read of our sidemount vs backmount page to further confuse- I mean clarify it all for you.