Essential Joining Knots for Rope and Line: Figure-Eight, Blood & Fisherman's

* Figure-eight knot: This is a strong and compact knot that is easy to tie. It is often used to join two lines of equal diameter.

* Blood knot: This knot is strong and versatile, and it can be used to join lines of different diameters.

* Double fisherman's knot: This knot is very strong and is often used to join fishing lines.