On Thu, 15 Mar 2001 19:55:08 +1100, David Strike <[log in to unmask]>
wrote:

....
>Summary of Lift Bag Use:
>1. Be aware of the DANGERS when using lift bags.
>2. Have experienced Lift Bag personnel on site.
>3. Carry out full calculations on the item to be lifted or supported.
>4. Ensure that you have the appropriate combination of bags.  And that  you
>know which bags to use.
>5. Ensure that you have plenty of support equipment: ie., shackles, ropes,
>strops, chain, marine ply, canvass, compressed air, hoses, etc..
>6. Check the strength of the lifting points on the item you are lifting or
>supporting.
>7. Use Parachute Bags for lifting.  Use Enclosed Bags for surface
>flotation, especially when towing.
>8. Be aware of the sea conditions, including sea state, currents, tides and
>monitor the weather forecast.
>9. Take your time, and remove anything that can damage the bags, ie.,
>barnacles, jagged metal, etc..
>10. And finally:
>Be prepared for the unexpected!
..
Hi strike
I have a problem for you. Last week a flask full of good Chianti wine
I use to drink every time  before to jump into the water in oder to kill
microbes and help on beating the bends, fell overboard and now is
lying on the bottom at about -40 metres. Knowing the wheigt of the bottle
was 2.5 kg how much air is required to salvage the precious liqueur?
Waiting anxiously for your help

Confucio