Aqua Lung BC 1 User Manual page 25

Non-Releasable Weight
To supplement the releasable weight, your BC is designed to carry non-releasable
(trim) weight in two fixed pocket locations.
To install weight into the non-releasable weight pockets, simply disconnect the
flap buckle, slide in the block weight, fold the flap over the pocket, and reconnect
the buckle. Weight should be added to the non-release (trim) pockets after the
BC has been secured to the cylinder.
The non-releasable weight pockets are designed to hold single rectangular
block weights. To avoid accidental loss of weight, Aqua Lung strongly advises
against using small bullet-shaped weights and soft weight.
Refer to the Weight Capacity Chart for maximum non-releasable weight capacity.
Because the weight is non-releasable, it must not be used as your primary source
of ballast. After filling the fixed pockets with weight, it is extremely important to
check your buoyancy in the water while wearing the BC attached to a fully charged
cylinder and your exposure suit. While standing in chest deep water, deflate the
BC completely and check to ensure that you can easily achieve positive buoyancy
by jettisoning your releasable weight.
WARNING:
for containing non-releasable weight, used in addition to releasable
weight. Do not fill either pocket with weight unless you are certain
you can achieve positive buoyancy at depth by releasing your
weight pouches or weight belt while your BC is completely deflated.
The non-releasable weight pockets are intended strictly
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