FIELD: hydroacoustics. SUBSTANCE: hydroacoustic measuring equipment which is used for measurement of sounds produced by vessel is equipped with transducer of hydroacoustic directed waves which is located behind hydroacoustic measuring equipment and vessel. Invention discloses optimal ratio between said transducer and receiver of hydroacoustic measuring equipment as well their relative size. EFFECT: possibility of simultaneous measurement of parameters of primary and secondary fields of vessel. 2 cl, 3 dwg
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