How to Tie Marine Knots - When Should You Use a Full Round Turn For Safety?

Did you know that when you tie marine knots, one fast easy step can keep your knot in place without fear of slipping or excessive chafe and wear? With this simple guide, you will learn how to put friction to work for you to hold your small cruising boat in place every time.

When you tie up to a dock or moor in a slip, you often loop your lines over a piling or mooring ring. You will need to determine whether to tie up with a turn or a round turn. To help you decide, go through these two easy experiments. Then you will know beyond a shadow of a doubt what to do to keep your cruising boat safe and secure.

Tie a bowline knot with a single turn

* Find a 4' to 6' piece of nylon or dacron rope.
* Locate a horizontal rail or bar.
* Drape the line over the rail and let it hang. This is called a "turn".
* Tie a bowline knot. Next, pick up the end of the line and put tension on your knot.
* Move the knot up and down the railing. Notice how easy it slides up and down.

That's what happens when you tie up your small cruising boat with just a turn. That bowline will work up and down the surface of a piling with wind and tide or passing boat wakes. This chafes and wears the inside bight of the bowline and weakens the line. One additional step will prevent this...

Add a round turn for extra security

* Untie your line and drape it over the rail again.
* Pass the line around the bar or rail one more time to make a "round turn".
* Tie a bowline. Now, pick up the end of the line and put tension on your knot.
* Try to move the knot up and down the railing. It's tough to do this time!

Friction prevents the line from moving. That extra turn grips the rail like a stubborn clam and helps keep the loop of your bowline in place. Add a round turn to make chafe and wear a thing of the past!

Use the round turn any time you're concerned about the bight of a line riding up and down vertical pilings or inside mooring rings (often used in Europe and the Mediterranean). Many of the more robust nautical knots--such as the rolling hitch and anchor bend--start with the tough, reliable round turn.

Use these marine knots tips to help you make the best decisions when docking or anchoring. You will add years of life to your marine ropes and save yourself lots of money in replacement costs.
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