Hydroacoustic low frequency system to control the behavior of fish

Portable multipath scientific sonar sector review PGLS

SPLIT-BEAM RESEARCH ECHO SOUNDER (ERL 220)

Split-beam portable multipurpose research single-beam echo sounder

SPLIT-BEAM RESEARCH ECHO SOUNDER (ERL 38)

Study of the operational capabilities of modern fish-finding equipment

Primary, special and professional training of command and ordinary navigation personnel of fishing vessels

Training in the main types of navigation calculations, conducting observations, radar observation

Training of fishing crew members in fishing operations in accordance with the fishing schedule