An apparatus constrainable to a diver, including a buoyancy control system for a diver including: a rigid means which identifies an operating zone; the operating zone being intended to receive a gas and an incompressible liquid; the zone being defined by a first chamber or by the sum of at least a first and a second chamber; a first means for introducing the incompressible fluid into the operating zone; a first means for introducing the gas into the operating zone; a pressurised tank of the gas, the first means for introducing the gas being operatively interposed between the tank and the operating zone; a means for evacuating a fluid from the operating zone, the fluid being the gas and/or the incompressible liquid.

An apparatus constrainable to a diver, including a buoyancy control system for a diver including: a rigid means which identifies an operating zone; the operating zone being intended to receive a gas and an incompressible liquid; the zone being defined by a first chamber or by the sum of at least a first and a second chamber; a first means for introducing the incompressible fluid into the operating zone; a first means for introducing the gas into the operating zone; a pressurised tank of the gas, the first means for introducing the gas being operatively interposed between the tank and the operating zone; a means for evacuating a fluid from the operating zone, the fluid being the gas and/or the incompressible liquid.

The invention relates to a free diving weight belt including a belt with a buckle that supports attaching a variety of accessories and/or a knob-back screw fastener that can be used to reconfiguring the belt. It permits attaching a variety of screw-on attachments, including but not limited to clips, knives, snorkels, weights, D-rings, weight keepers, and knife holders. It also provides the knob-back screw fasteners to secure excess belt extending beyond the buckle and/or hassle-free attachment of accessories.

The invention relates to a free diving weight belt including a belt with a buckle that supports attaching a variety of accessories and/or a knob-back screw fastener that can be used to reconfiguring the belt. It permits attaching a variety of screw-on attachments, including but not limited to clips, knives, snorkels, weights, D-rings, weight keepers, and knife holders. It also provides the knob-back screw fasteners to secure excess belt extending beyond the buckle and/or hassle-free attachment of accessories.