an attachment device for underwater salvage operations which has an elongd cylindrical body and a plurality of extendable lugs supported in one or more apertures near the tapered end of the cylindrical body . after insertion in a predrilled hole , the lugs are extended either by a spring action or mechanically by a shaft passing through the center of the cylindrical body . an external concentric collar on the hollow body supports a shackle for attachment of a cable . a scalloped handle attached to the hollow body at the end adjacent to the shackle permits the collar to be tightened down firmly against the hull after attachment to increase side load bending strength by the lift cable attached to the shackle . the end of the cylindrical body adjacent to the extendable lugs may be tapered to aid in alignment and insertion in a predrilled hole .