FIELD: hydroacoustics. SUBSTANCE: device has folding extended member which inner chamber is connected to accumulation system. Folding extended member carries detectors of antenna. Accumulation system of device is designed as hydrostatic pressure transformer and has constriction hole. In addition hydrostatic pressure transformer may have two cylindrical piston pairs which lesser pistons are directed towards accumulation system and greater ones are directed outside. When device is immersed , its inner chamber is filled with water through constriction holes. At given depth greater pistons of piston pairs are subjected to hydrostatic pressure so that pressure inside device is increased. This results in possibility of automatic unfolding of antenna and providing its required shape on given depth of water pond. EFFECT: increased functional capabilities. 5 cl, 1 dwg
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