Systems and methods for configurable dive masks in accordance with embodiments of the invention are illustrated. In one embodiment, a configurable dive mask including a dive mask frame, at least one lens located within the dive mask frame, a display device viewable through the at least one lens, a processor, a dive device data circuit that obtains dive device data from a set of sensor devices, a configuration interface circuit that communicates with configuration devices to obtain configuration data when the configuration interface is above water; and memory storing configuration data and dive device data, wherein the processor receives configuration data via the configuration interface, receives dive device data via the dive device interface, determines a portion of the dive device data to display based upon the configuration data, and displays dive device data in accordance with configuration data.

Various embodiments associated with a heads-up display capable of functioning while underwater are described. An underwater mask can have a segment that a diver sees through and this segmented can be augmented with various portions that disclose information to the diver. These portions can relate to the diver herself or relate to other information such as the location of a source transmitting a signal. With these portions the diver can quickly learn about important information and act on that information.

A diving computer with coupled antenna and a water contact assembly is disclosed. The diving computer has at least one radiator element located on or connected to an outermost surface of a bezel of the diving computer and a radio unit having a conductive coupling to said radiator element, for enabling wireless communication between said diving computer and external devices. A conductive water contact surface extends through the housing of the diving computer and a water contact detector circuit is arranged, as a part of an underwater condition sensing circuit, to sense an underwater condition of the device. When water establishes a current path through said underwater condition sensing circuit from the water contact surface to ground, the sensing circuit provides an indication of an underwater condition to the diving computer.

A diving computer with coupled antenna and a water contact assembly is disclosed. The diving computer has at least one radiator element located on or connected to an outermost surface of a bezel of the diving computer and a radio unit having a conductive coupling to said radiator element, for enabling wireless communication between said diving computer and external devices. A conductive water contact surface extends through the housing of the diving computer and a water contact detector circuit is arranged, as a part of an underwater condition sensing circuit, to sense an underwater condition of the device. When water establishes a current path through said underwater condition sensing circuit from the water contact surface to ground, the sensing circuit provides an indication of an underwater condition to the diving computer.

An underwater diving marker is disclosed which has a tube with at least one removable end. A strap element extends between the removable end and the housing and is folding or otherwise compressed to fit within the housing. The end cap has a positive buoyancy so it will float when separated from the housing even with being attached to the strap. The housing includes a weight element which insures that the housing has a negative buoyancy when separated from the end cap. The user removes the end cap and allows it to float up pulling the strap/tether, while the housing sinks to the sea floor, thereby providing an indicator flag to divers.

An underwater diving marker is disclosed which has a tube with at least one removable end. A strap element extends between the removable end and the housing and is folding or otherwise compressed to fit within the housing. The end cap has a positive buoyancy so it will float when separated from the housing even with being attached to the strap. The housing includes a weight element which insures that the housing has a negative buoyancy when separated from the end cap. The user removes the end cap and allows it to float up pulling the strap/tether, while the housing sinks to the sea floor, thereby providing an indicator flag to divers.

A portable inflatable diving float that includes an inflatable float body is revealed. The float body consists of a horizontal portion provided with a left folding area formed on the left side and a right folding area formed on the right side. After the left and the right folding area being folded to a middle portion of the float body, a left edge portion of the left folding area and a right edge portion of the right folding area are connected by a first connection member and kept in the folded state. A flat body formed after deflation of the float body becomes a backpack body with smaller area. At least one strap member is connected between the top end and the bottom end on a front side or a back side of the float body so that users can carry the backpack body on their back.

A portable inflatable diving float that includes an inflatable float body is revealed. The float body consists of a horizontal portion provided with a left folding area formed on the left side and a right folding area formed on the right side. After the left and the right folding area being folded to a middle portion of the float body, a left edge portion of the left folding area and a right edge portion of the right folding area are connected by a first connection member and kept in the folded state. A flat body formed after deflation of the float body becomes a backpack body with smaller area. At least one strap member is connected between the top end and the bottom end on a front side or a back side of the float body so that users can carry the backpack body on their back.

The system for positioning an underwater device including at least two surface transponders comprising a receiver for receiving radio signals transmitted by a geolocation system; each surface transponder comprising: an estimator for estimating at least one radio pseudo-distance; an attachment to a float; and a communicator for communicating information representative of the radio pseudo-distances; and an underwater acoustic transmitter; the underwater device comprising: a receiver for receiving information representative of the radio pseudo-distances; an acoustic signal receiver; a determinator for determining one or more acoustic pseudo-distances between at least two underwater acoustic transmitters and the underwater device; and a calculator for calculating the position of the device in a terrestrial frame of reference centered on one of the surface transponders.

The system for positioning an underwater device including at least two surface transponders comprising a receiver for receiving radio signals transmitted by a geolocation system; each surface transponder comprising: an estimator for estimating at least one radio pseudo-distance; an attachment to a float; and a communicator for communicating information representative of the radio pseudo-distances; and an underwater acoustic transmitter; the underwater device comprising: a receiver for receiving information representative of the radio pseudo-distances; an acoustic signal receiver; a determinator for determining one or more acoustic pseudo-distances between at least two underwater acoustic transmitters and the underwater device; and a calculator for calculating the position of the device in a terrestrial frame of reference centered on one of the surface transponders.