Abstract: In a first preferred embodiment, an underwater alert system (10) includes a transmitter assembly (12), carried by a first diver (14), that transmits a predetermined wireless signal (36) to a receiver assembly (16), carried by a mask (18) worn by a second diver (20), that generates an alert to gain the attention of the second diver (20). In a second preferred embodiment, the underwater alert system (10) includes a first transceiver assembly (232), carried by a mask worn by a first diver (14), communicating a predetermined wireless signal (36) with a second transceiver assembly (254), carried by a mask (18) worn by a second diver (20), to permit the first diver and second diver to gain each other's attention.

Abstract: In a first preferred embodiment, an underwater alert system (10) comprises a transmitter assembly (12), a receiver assembly (16) and a mask (18). The transmitter assembly (12), carried by a first diver (14), has a waterproof transmitter housing (38) for carrying an alert switch (68), a transmitter (66) and a transmitting element (80). The alert switch (68) generates an electrical alert actuation signal (86) responsive to the alert switch (68) being actuated, either manually by the first diver (14) or automatically by the first diver's equipment. The transmitter (66) generates a predetermined electrical transmit signal (98) responsive to receiving the electrical alert actuation signal (86). The transmitting element (80) generates a predetermined wireless signal (36) responsive to receiving the predetermined electrical transmit signal (98).

Abstract: In a first preferred embodiment, an underwater alert system (10) includes a transmitter assembly (12), carried by a first diver (14), that transmits a predetermined wireless signal (36) to a receiver assembly (16), carried by a mask (18) worn by a second diver (20), that generates an alert to gain the attention of the second diver (20). In a second preferred embodiment, the underwater alert system (10) includes a first transceiver assembly (232), carried by a mask worn by a first diver (14), communicating a predetermined wireless signal (36) with a second transceiver assembly (254), carried by a mask (18) worn by a second diver (20), to permit the first diver and second diver to gain each other's attention.