Leak, to frap a:
If you get a hole in the bottom from striking a rock or other obstruction, and cannot put the boat ashore on a safe place, you can check it enough to keep her afloat by what is called frapping. Take a sail or large piece of canvas, and fasten a line to each of the four corners, then on the inside of the canvas sew a lot of oakum or cotton so as to make a wad big enough to completely cover the hole and a large space around it. Pass two of the lines under the boat and bring them up on the side opposite to the one the leak is on; keep the other two on the side the leak is. Work the canvas along until it covers the hole, and then haul all the lines taut, and make fast, the pressure will force the wadding into the hole and check the inflow of water until you can lay the boat ashore.