Depth-sounder-Airmar-p48w-inboard.jpg
Markus Bärlocher
en
Depth sounder Airmar p48w inboard, Echo sounders, Hydrography, OpenSeaMap
commons
ja
深海音響機エアマー p48w 内航、エコー、水路、OpenSeaMap
commons_translated
sounding sounding lead sounder depth inboard sound law sonar