Hi David: Life support in the ADS is identical to what we use in the DeepWorkers:. bellows-add O2 and blower system for scrubber with ability to go on passive breathing thru' scrubber if power lost. Temp inside suit is quite comfortable - between the cool to cold outside water and the exothermic reaction of the scrubber, the cabin temp is usually a little below room temp. Unless you're in freezing water, of course. I spent 6 1/2 hours on the wreck of the 'Breadalbane' (the northermost known shipwreck) in the Canadian high arctic in an ADS. Water temp was 28 degrees F. Below freezing! I wore a bunny suit similar to what I wear under a dry suit or in heavy gear and was pretty comfortable - got a little chilly towards the end, tho' . Comms are wireless thru-water same as a sub. Suit responds instantly to your movements - but once we developed the first thruster pack for the Newtsuit, the pilots never walked again! The thrusters act as limbs to a surprising extent. If you want to reach for something beside you, for example, rather than shuffle your feet around, you just lift off slightly while engaging full turn. The suit can spin vertically on its own axis (like the DeepWorkers) and you can control vertical and horizontal within fractions of an inch. Re - Claustrophobia . . . psubbers wouldn't have a problem - if you are willing to climb into a little metal sausage-coffin and go down to great depths with no means to escape - well, the suit doesn't seem like you're inside it, more like you're wearing it ( which I believe was Sean's point) it really is like getting dressed into a set of MK5 gear - or putting on rain gear and a crash helmet. Hard to describe - you'd have to try it. Phil ************************************************************************ ************************************************************************ ************************************************************************ The personal submersibles mailing list complies with the US Federal CAN-SPAM Act of 2003. Your email address appears in our database because either you, or someone you know, requested you receive messages from our organization. If you want to be removed from this mailing list simply click on the link below or send a blank email message to: removeme-personal_submersibles@psubs.org Removal of your email address from this mailing list occurs by an automated process and should be complete within five minutes of our server receiving your request. PSUBS.ORG PO Box 53 Weare, NH 03281 603-529-1100 ************************************************************************ ************************************************************************ ************************************************************************