HYDROACOUSTIC MEANS Hydroacoustic Doppler log L-96 Read more Precision ice fathometer МГ-518М Read more Hydroacoustic stations of ice condition advanced view HOP-1 Read more Hydroacoustic stations of ice condition panoramic view HOK-1 Read more Navigational echo sounder НЭЛ-М1 Read more Navigational echo sounder НЭЛ-М3Б-М Read more Depth finder ПЭЛ-4М Read more
RESEARCH INSTITUTE AO "RIF ACVAAPARAT" RESEARCH INSTITUTE AO "RIF ACVAAPARAT" 
