The present invention relates to an automatic falling-off device for a self-sinking and floating type profiling float diversion shell and the diversion shell. An automatic falling-off device for a self-sinking and floating type profiling float diversion shell, comprises a locking device and an unhooking device; the locking device comprises a locking hook plate and a locking core plate; the locking hook plate is provided on one half diversion shell, and the locking core plate is fixed on another half diversion shell; a locking hook at a front end of the locking hook plate fits with a locking ring at a front end of the locking core plate for locking; the unhooking device comprises a base and a buoyancy airbag; and the base is provided below the locking hook plate, and the buoyancy airbag is mounted between the base and the locking hook plate.

Aquatic structures with adjustable buoyancy constructed in part with a vent valve for a buoyancy control device suitable for divers, where the vent valve may be opened by any combination of over-pressure, manual pressure relief or a powered means, where a force to a valve plug is applied by means of a spring that is constrained to prevent entirely lateral and angular movement but in which movement of the plug in the axis of the seat is unconstrained.

Aquatic structures with adjustable buoyancy constructed in part with a vent valve for a buoyancy control device suitable for divers, where the vent valve may be opened by any combination of over-pressure, manual pressure relief or a powered means, where a force to a valve plug is applied by means of a spring that is constrained to prevent entirely lateral and angular movement but in which movement of the plug in the axis of the seat is unconstrained.

A buoyant module comprising a base configured for being buoyantly supported within a body of water, wherein said base defines a space which is in fluid communication with said body of water; a fluid-holding container sized and fitted for being received within said space and for moving in a vertical dimension relative to said base; and wherein a vertical position of said container relative to said base is determined, at least in part, by a fluid level in said container.

A buoyant module comprising a base configured for being buoyantly supported within a body of water, wherein said base defines a space which is in fluid communication with said body of water; a fluid-holding container sized and fitted for being received within said space and for moving in a vertical dimension relative to said base; and wherein a vertical position of said container relative to said base is determined, at least in part, by a fluid level in said container.

Aquatic structures with adjustable buoyancy constructed in part with a vent valve for a buoyancy control device suitable for divers, where the vent valve may be opened by any combination of over-pressure, manual pressure relief or a powered means, where a force to a valve plug is applied by means of a spring that is constrained to prevent entirely lateral and angular movement but in which movement of the plug in the axis of the seat is unconstrained.

Aquatic structures with adjustable buoyancy constructed in part with a vent valve for a buoyancy control device suitable for divers, where the vent valve may be opened by any combination of over-pressure, manual pressure relief or a powered means, where a force to a valve plug is applied by means of a spring that is constrained to prevent entirely lateral and angular movement but in which movement of the plug in the axis of the seat is unconstrained.

Floats including a central chamber, a peripheral chamber set, and a ballast matter. The peripheral chamber set is disposed around the central chamber in a substantially common plane with the central chamber. The peripheral chamber set defines circumferentially spaced sub-chambers. The ballast matter is disposed in either the central chamber or the sub-chambers of the peripheral chamber set. The float is buoyant and configured to float on an external liquid surface in a substantially horizontal plane. The ballast matter operates to maintain the center of gravity of the float proximate to the geometric center of the float when the float tilts relative to the horizontal plane.

Floats including a central chamber, a peripheral chamber set, and a ballast matter. The peripheral chamber set is disposed around the central chamber in a substantially common plane with the central chamber. The peripheral chamber set defines circumferentially spaced sub-chambers. The ballast matter is disposed in either the central chamber or the sub-chambers of the peripheral chamber set. The float is buoyant and configured to float on an external liquid surface in a substantially horizontal plane. The ballast matter operates to maintain the center of gravity of the float proximate to the geometric center of the float when the float tilts relative to the horizontal plane.

A self-deployable apparatus for facilitating collecting data from multiple depths of water bodies. Further, the self deployable apparatus comprises a main body, substances, a sensor, a storage device, and a power source. Further, the substances in amounts are to be disposed in a second interior space of the main body for sinking the self-deployable apparatus to a depth of water body. Further, the amounts of the substances undergo a thermochemical reaction at a temperature for producing a gaseous substance. Further, a check valve of the main body expels a portion of the gaseous substance from the second interior space for rising the self-deployable apparatus to a surface of the water body. Further, the sensor generates sensor data based on detecting a parameter of a water sample. Further, the storage device stores the sensor data. Further, the power source powers the sensor and the storage device.