whalecraft

Rigging; Pulley Block (2), Double, Whale Bone, Iron Hooks, 9 inch.

The blades of later spades, after the 1850's, were usually made of cast steel, while the sockets and shanks were wrought iron. ... As the blanket was hoisted up , by means of a huge iron blubber hook and tackle rigged from the mast to the windlass, peeling more of the blubber off, the whale was rolled over in the water.