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[ ... story of lift-bag sinking deleted ... ] Like John Heimann, I carry a standard (If large) SMB reel and line, and a lift bag to use as a delayed SMB, for use when I don't make it back to the shot line. However, to help keep the bag stable when on the surface, and make it a little easier to handle on the bottom, I suspend a 1 kilo (2lb) of lead under the bag. It means that I can put a quick squirt of air into the bag which keeps it upright on the bottom, making the job of clipping it on to the reel much easier. Instead of tying the line to the wreck, I just ascend by keeping myself very slightly -ve and winding myself up the line, just as I would do when using an ordinary SMB. (This may not be a good thing with a tide running, but I don't usually dive on wrecks then!) It does mean that I'm a couple of pounds heavier at the start of the dive than I need to be, but I don't find that a problem. In the UK, (and elsewhere, I guess!) you can buy specially designed delayed SMBs or decompression bouys. They are either a long tube, or "inverted pear" shaped devices, with the fittings for a small CO2 cylinder or a small 0.2 litre air cylinder (which can be topped up from your main tank, like the emergency cylinders we use on our stab. jackets). These delayed SMBs are usually fitted with an automatic dump valve, so they don't burst as they ascend. (And stay fully inflated on the surface). I would have bought one of these, but they cost approx. #60 (UK Pounds), and the lift bag was only #20 ... (And who knows when I might just find something that will need a decent bag to get it to the surface!) Gordon -- Gordon Henderson is gordon@me*.co*.uk* O Meiko Scientific Ltd. Dive Safe, o 650 Aztec West, Bristol Surface Sound ____ o England UK (_/\_) .
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