Backplate and wing
Videos
A backplate and wing is a type of scuba harness with an attached buoyancy compensation device which can be used to establish neutral buoyancy underwater and positive buoyancy at the surface.
A stainless steel backplate, wing and manifolded twinset
Backplate with wing style BC, scuba set, and harness Regulator first stage Cylinder valve Shoulder straps Buoyancy compensator bladder Relief and bottom manual dump valve Regulator second stages (with "octopus") Console (pressure gauge, depth gauge & compass) Dry-suit inflator hose Backplate BC inflator hose Oral inflation mouthpiece and manual dump valve Crotch strap Waist strap
A stainless steel backplate with "M"-section centre channel
End view of a backplate showing the "M"-section of the central channel
Diving weighting system
Videos
A diving weighting system is ballast weight added to a diver or diving equipment to counteract excess buoyancy. They may be used by divers or on equipment such as diving bells, submersibles or camera
Backplate and wing
…Some or all of the diver's ballast weights may be bolted to the plate, clipped to the harness webbing, or strapped to the cylinder (tank weights). A v-weight, keel weight or p-weight, trim weights or clip-on weights may be used. Some of this equipment is difficult to attach to other styles of BCD…
Conventional scuba weight-belt with quick-release buckle
A bag weight belt and a traditional weight belt
Solid belt weight and pouches holding lead shot for scuba diving
scuba diving weights and weight belts