Quote: (Originally Posted by
UKSteve)

On my Mod 1 I practised clearing. On Mod 3 we were liable to have our mask "removed" at any time

. Sometimes we were even given it back. Also had to do a 20m open water swim (off the side of and around the top of a container) with mask removed and while controlling ppO2 manually.
Steve
Was that on a vision?? if you had no hud it would be hard to control the ppo2 with no mask. But I guess they are all psycological excercises end of the day.