FIELD: hydraulic structures erected on sea shelves. SUBSTANCE: bearing metal structure of device is built up of two booms hinged to mounting brackets of gantry either side of its aperture and provided with thrust journals contacting gantry roof as well as with lifting pads for slings. Tackle blocks are mounted on head structures of booms above gantry aperture; load hanger is made in the form of crossbar. EFFECT: improved load-lifting capacity and reduced maintenance cost. 2 cl, 3 dwg
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