Entry 1 Securing to a dock or piling
A bowline holds its shape under load and still unties easily afterward, which is why it is the default choice for securing a line around a piling or through a cleat eye where you'll need to release it later without a fight.
Entry 2 Joining two lines or shortening one
A sheet bend joins two lines of different thickness more reliably than a simple overhand-style join, while a clove hitch is quick for a temporary tie-off to a rail or piling where constant tension is expected — though it is not reliable alone for anything that absolutely cannot slip.
Entry 3 The one that deserves more respect than it gets
A simple figure-eight stopper knot, tied at the end of a line, prevents it from slipping entirely through a block, cleat, or your own hand under sudden load — a small habit that prevents a surprising number of minor mishaps on deck.
Entry 4 Questions people ask
Do I need to know dozens of knots to be a competent boater?
No — a handful of reliable knots used correctly cover nearly every situation most recreational boaters encounter.
What is the most common knot mistake?
Using a knot that is quick to tie but also quick to slip under a sudden load, rather than one suited to the actual forces involved.