giles45shop
Contributor
From the description that Sas posted above, I would suspect you need to do a little more work before taking the first Australian cave course of Deep Cavern. Basically, you need to start diving twins and get familiar with that since that's the config they do the course in. I would also try and hook up with some locals and do a little familiarity practice running lines and operating a reel before class. It sounds like they cater it towards the new twins diver, but I would suggest that you have some number of dives in twins before the course because of the task loading issue. You can quickly become task overloaded with everything that's going on.
In the US, the first course, "Cavern" can be done in a single tank configuration and even with a jacket style BC. The progression from there (with the exception of NAUI) is Basic/Intro cave (1/3 single or 1/6 doubles, no deco), Apprentice Cave (doubles only, 1/3's, light deco) and Full Cave (doubles, 1/3's, unlimited deco). Full Cave is the top cert level, but there are specialty courses for things like stages, scooters, etc. although that's not a requiement and many people learn those skills through informal mentoring. In addition to Full Cave, some cave divers also take trimix courses to extend their depths in areas with deep caves. These are independant in that you can become a Trimix diver w/o cave or a Cave diver w/o Trimix.
John
In the US, the first course, "Cavern" can be done in a single tank configuration and even with a jacket style BC. The progression from there (with the exception of NAUI) is Basic/Intro cave (1/3 single or 1/6 doubles, no deco), Apprentice Cave (doubles only, 1/3's, light deco) and Full Cave (doubles, 1/3's, unlimited deco). Full Cave is the top cert level, but there are specialty courses for things like stages, scooters, etc. although that's not a requiement and many people learn those skills through informal mentoring. In addition to Full Cave, some cave divers also take trimix courses to extend their depths in areas with deep caves. These are independant in that you can become a Trimix diver w/o cave or a Cave diver w/o Trimix.
John