High-power underwater loudspeakers can be applied in key ports, terminals, and other locations to assist in underwater diver security work and provide disposal means for detected underwater divers.

The underwater loudspeaker consists of a transducer, a power amplifier module, a control module, and a network interface, etc. The control module receives instructions from the command system via the network and controls the power amplifier module and transducer to emit various types of sounds according to the instructions.

The underwater acoustic deterrent system can dispose of invading divers in two ways: warning and jamming. Firstly, the system sends repellent signals to underwater divers, with the signal intensity within the tolerable range of the divers, urging them to surface for disposal; if they refuse to cooperate, high-intensity noise jamming signals can be emitted to deal with the underwater divers, forcing them to surface or causing damage to them.