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The weight possibilities are the light ( - 6 lbs ), a wedge ( -6 ), a
steel backplate ( -5 ) and a weightbelt, depending on what insulation
you are using. With a wetsuit, the weight needs to be all droppable.
With the dryusuit, it depends on how much natural lift you are getting
from the insulation.

If you have the thick insulation, steels can be used with the only
problem being walking around on the boat with heavy tanks and taking off
the tanks on the surface ( which comes into play with aluminum if the
weight is part of the rig).

I generally go with a steel backplate , light and small weightbelt. I
put the belt under the harness so it does not drop if it comes
unbuckled, and if I need to get rid of it, I have to pull it around the
crotch strap - takes another few seconds, but in an emergency I already
lost the light anyway.

With a wetsuit, it is the aluminum backplate and the weightbelt and
light combo. Losing both leaves me negative by the weight of the gas in
the tanks, generally about 4 pounds with 50% helium. That amount of
weight I can swim against or hold up the tanks in the water when I take
them off without the bc.

Using the aluminum backplate is always preferable, but too much weight
on the hips can be uncomfortable with a drysuit.


Chris Gregory wrote:
> 
> George,
> Not quite clear on this one, the DIR setup for ocean diving with a
> drysuit and underwear I have been told is an aluminum backplate,
> aluminum doubles and aluminum stages and all the weight goes on the
> hips. Is this so?
> Chris
> 
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