If you’re on the water for any length of time, you’ll eventually need to tie something to something else. You might need to tie your boat to the dock, or connect two lines for a tow rope
There are really just a few knots you really need to know:
- Cleat Hitch for Dock
- Round Turn & Two Half Hitches.
Sailing knot website: https://www.animatedknots.com/boating-knots