Ternant, A. L. (Alcide Ludovic), 1832-1884 · London ; New York : G. Routledge and Sons · leaf 199
AKING AND LAYING SUBMARINE CABLES. 181 successively, at the same time laying it down again in its former position. This process can only be used where the depth is not great, and where the cable is not buried in sand, or entangled among rocks. But at the present day it has become almost… … To grapple the cables, strong irons with three or four arms are used (fig. 118). Their weight may be 30 or 40 lbs. They fall to the bottom, and of course rest upon two of their arms. A chain of about 20 or 30 fathoms in length is fastened to the ring of the grapnel, and to the chain a rope of a…
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