Underwater acoustic waveguide transducer for deep ocean depths

Underwater acoustical transducer

Underwater audible signalling device

Underwater cable arrangements, internal devices for use in...

Underwater electroacoustic transducers

Underwater high energy acoustic communications device

Underwater low-frequency sound producer using a rare earth alloy

Underwater low-frequency ultrasonic wave transmitter

Underwater piezoelectric arrangement

Underwater piezoelectric arrangement

Underwater sensing device for ocean floor contact

Underwater signaling device

Underwater signaling device

Underwater sound attenuator

Underwater sound generator

Underwater sound projector and underwater sound projection...

Underwater sound projector and underwater sound projection...

Underwater sound source

Underwater sound source with remote controlled actuator

Underwater sound source with timed actuator