Inspired by our last trip to a small cove where I wanted to anchor the boat with a stern tie at high tide. I wanted to make sure the boat was beyond the low tide line the next morning. Not having any tools on a small boat this was mostly guesswork with the anchor rhode which is not yet marked (future projects).
I found that Steveston marine had 7lbs lead-line weights on sale at the end of the season. So I got to work on making a lead line. Being in Canada I decided to make the markings metric instead of the traditional fathoms.
Here is the markings I used from:
(https://www.maritimestudyguides.com/sg/bridgewatchrating/lessons/lead-lines/)
1 meter, 11 meters, 21 meters One strip of leather
2 meters, 12 meters, 22 meters Two strips of leather
3 meters, 13 meters, 23 meters Blue bunting
4 meters, 14 meters, 24 meters Green and white bunting
5 meters, 15 meters, 25 meters White bunting
6 meters, 16 meters, 26 meters Green bunting
7 meters, 17 meters, 27 meters Red bunting
8 meters, 18 meters, 28 meters Blue and white bunting
9 meters, 19 meters, 29 meters Red and white bunting
We shall see if this logic gets internalized over time. Most of the time I think I will be sounding in less than 10 metres. My line is 30m long and I may also use it before putting out my crab trap.