Carrick Bend (ABoK 1439)
The Carrick Bend is an excellent knot for tying two lines together. Clifford Ashely (of Ashley's Book of Knots) called it "...the nearest thing we have to a perfect bend". It is strong, secure, simple to tie, and it does not jam. Once you learn how to tie the Carrick Bend, you won't want to use the Sheet Bend again.