How many lines do I need on the boat?
Ideally, you will have at least two (2) bow/stern lines and two (2) spring lines on board. Reference the diagram below to learn the difference.
Why does the diameter of my dock lines matter?
The cleats on your boat are designed to work with appropriately sized lines. Lines that are too big for your cleats can cause problems and make tying up difficult.
What's the proper length/size?
You choose length/size based on your boat size and the application. You want a length that will give you maximum flexibility without creating unnecessary or cumbersome extra line.