How to Tie Fenders on a Boat

Fenders are essential for protecting your boat from damage caused by contact with docks, pilings, seawalls, or other vessels. Here’s a step-by-step guide to properly space, position, and tie fenders for maximum effectiveness.

Part 1: Spacing the Fenders

1. Use at Least 3 Fenders

• The general rule is to have 1 fender for every 10 feet (300 cm) of boat length, with a minimum of 3 fenders.
• More fenders provide better protection, especially for larger boats.

2. Place a Fender at the Widest Part of the Boat

• The widest part of the boat is most likely to bump into objects first. Ensure one fender is stationed here.
• Position other fenders forward and aft for full coverage.

3. Use a Fender Board for Pilings

• When docking near pilings with wide gaps, use a fender board. Attach the board to two fenders to form a barrier that bridges the gaps between pilings.

Part 2: Positioning Your Fenders

1. Orient Fenders Horizontally or Vertically

• Vertical Orientation: Use for docks, seawalls, or other boats.
• Horizontal Orientation: Use for pilings or posts.

2. Tie Fenders to a Solid and Low Attachment Point

• Choose sturdy attachment points like cleats, lifeline stanchions, or padeyes.
• Avoid tying fenders to the top of lifelines or rails to prevent excessive swinging.

3. Adjust Fender Heights from the Boat

• Stand on the boat and position the fenders based on what the boat will come into contact with.
• Raise or lower the fenders until they align perfectly to buffer against the dock or other structure.

Part 3: Tying a Clove Hitch or Similar Knot

Tying a Clove Hitch Knot

1. Lay the Line Over the Rail:
   • Drape the working end of the line over the rail or bar where you want to attach the fender.
2. Wrap the Line Underneath:
   • Pull the working end of the line halfway around the rail or bar.
3. Create an “X”:
   • Cross the working end of the line over the section that’s still laying on the rail.
4. Wrap the Line Around Again:
   • Pull the working end halfway around the rail again.
5. Pull the End Through the Loop:
   • Thread the working end of the line under the loop you created and pull it tight. The weight of the fender will keep the knot secure.

Using a Half Hitch Knot (Alternative)

1. Wrap the line around the rail or attachment point.
2. Pull the working end of the line under the standing part and up through the loop you’ve created.
3. Pull tight to secure the knot.
4. For additional security, tie multiple half hitches.

Expert Tips

• Material: Use marine-grade line that isn’t slippery for secure knots.
• Inspection: Regularly check lines for fraying or sun damage to ensure durability.
• Placement: Attach fenders to the widest part of the boat and position them according to the structure they’ll protect against.

By following these steps, you can confidently secure your fenders and protect your boat during docking or mooring.