Lark’s Head Connector
Take another rope, fold it over, forming a new running and bight end, and connect it to the running end of the rope already on the sub’s body.
This way, you always have rope. We’ll call the rope on the sub’s body the old rope and the extension you’re adding the new rope to. The two will come together with a square knot, but we won’t form it using the traditional square knot technique above. Instead, we’ll use a lark’s head.
Here, the old rope is red, and the new rope is beige. Notice that we’re connecting the running end of the red (old) rope to the bight end of the beige (new) rope.
On the new rope, make a lark’s head:
Put the two strands of the old rope through the lark’s head:
Then carefully spread the lark’s head like a butterfly. Notice that in this photo I’ve turned the rope over so you can see the lark’s head spread like a butterfly:
The next part is deceptively simple and takes a little practice to get right. You’ll pull the end of running end of the new rope and the bight end of the old rope together, forming a square knot:
The “trick” is shown right here, and is that the bight end of the old (red) rope go together with the running end of the same rope (the red rope):
Finally, finish in a square knot:
