FIELD: underwater blasting operations. SUBSTANCE: the device uses a net of elastic porous cords with a waterproof coating located horizontally above the charge. Secured around the edges of the net are rows of freely hanging vertical staggered cords of a variable density growing in the direction of passage of shock waves. The cords are also made of elastic porous materials with a waterproof coating. EFFECT: enhanced efficiency. 3 cl, 4 dwg
