Soon the rim of the tun was in his grasp. Groping around atop a jumble of cold rough chain-links, Jack found a rope-end, and drew it out and hitched it around the anchor-cable using a sailor-knot he’d learnt to do with his eyes closed—just as Dappa had presumably done with the other end of the same rope. The brig’s twin anchor-cables were now joined by a length of sturdy manila with plenty of slack in it. In the middle of that length was a spliced-in loop, called a cringle, and fixed to that cringle was one end of a chain, somewhat longer than the river was deep here (as they knew from van Hoek’s soundings) and several hundred pounds in weight.