Apparatus masking underwater noise fishing vessel comprising series-connected power amplifier and a sonar emitter, characterized in that it introduced serially connected memory unit masking sounds, a digital to analog converter, a masking sound generator, a dual-channel power amplifier, a second sonar transducer also introduced unit variable time a delay having an input coupled to an output masking generator, and an output coupled to the second input dvuhkanalnog a power amplifier, also administered serially connected data sounds sea creatures bank and selection unit masking sounds, whose output is connected to the input of the storage unit of masking sounds also administered serially connected sonar receiver and an amplifier, whose output is connected to a second input selecting masking sounds block, also introduced a control device and sinhrovyhody clock terminal which are connected to the memory unit masking sounds, digital-to-analog converter, the selection unit masking sounds and bank data and inhabitants of the sea sounds.
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