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How to Install Inflatable Boat Fenders: Step by Step Guide

Writer's picture: sales@ safe2dock.comsales@ safe2dock.com

How to install Safe2Dock Inflatable Boat Fenders to dock, pontoon or marina


Worried about hull damage while docking? Properly installed inflatable boat fenders absorb impact, protecting your boat from costly repairs. This guide will show you how to correctly install your Safe2Dock fenders to keep your vessel safe in any environment.. Proper Sizing & Installation is vital in keeping your boats protection in even the most harsh conditions. Follow this easy installation guide to protect your boat and avoid expensive repairs at the boat yard.


Inflatable boat fender installation:

Step by step guide to install boat fender: lay flat, attach swivel shackles, screw saddles, flip, screw shackle pin, and inflate to 2 psi.

Follow these 6 easy steps on How to tie a boat fender to the dock.

Refer to the Sizing and Positioning guides here to determine the size and number of fenders for your needs.


How to Install Inflatable Boat Fenders in 6 Simple Steps:

  1. Lay the fender flat – Position it on its side with D-rings facing the dock.

  2. Attach swivel shackles – Secure them to the D-rings for flexibility.

  3. Screw in half saddles – Align with D-rings and screw 60-65mm from the edge.

  4. Flip the fender over – Release the inflation valve and secure the plug.

  5. Attach the shackle pin – Thread it through the half saddle, ensuring it faces away from the tube.

  6. Inflate to 2 PSI – Use an electric or foot pump until firm.

Pro Tip: Attach a safety line and tie to dock.

Diagram titled "Selection guide" shows dock fender sizes for water heights. Includes dimensions and materials like wooden edge and PVC edging.

Diameter Selection guide

To determine the diameter of fenders you will need will have to consider the size of your boat and the water line.

Step 1: Measure height at the water line.

Step 2: Consider Weight & Impact resistance needed for your vessel.

If your boat is under 6m or (20ft) and the waterline is 300-400mm (14-16”), choose 350mm fenders.


If your boat is over 6m or (20ft) & the waterline is 400-500mm (16-20”), choose 450mm fenders.


Selection Guide Table

Boat Size

Waterline Height

Recommended Fender Size

Under 6m (20ft)

300-400mm (14-16”)

350mm Boat Fenders

Over 6m (20ft)

400-500mm (16-20”)

450mm Boat Fenders



Fender Positioning: Length & Placement

To determine how long of fenders do you need and the positioning.

Consider the shape and widest point of the hull, dock design to determine the ideal length and coverage. To determine placement for your pontoon fenders, consider high risk areas that will need the most protection and the typical boat position when docking. We recommend having fenders covering 80% of the length of the hull to ensure key areas are protected from damage to the hull or fiberglass.

Diagram showing example of vessel positioning against dock fenders, detailing measurements for 12m boats. Includes text instructions and labeled parts.

Fender Positioning

Example: 12m Yacht at dock

Step 1: Consider Boat vs Fender Positioning

Consider the boat length & typical docking position at your marina. Place fenders where your boat would make contact with the dock. Identify key areas of concern such as the widest point, dock corners & other areas, we recommend covering at least 80% of the hull.


This example shows a 12m Yacht with 2x 6m fenders & 1m corner fender spaced 300mm apart.

6m fender | 6m fender


Now that you know how to install boat fenders, check out our range of boat fenders for maximum protection!


Congratulations for making it to the end of this guide! You are now Safe2Dock!

Following this guide you correctly installed your inflatable boat fenders , safe guarding your vessel against impact by the dock.

Whether you're a seasoned captain or a beginner boatie, Inflatable dock fenders make docking fast & easy, enhancing your boating experience! Dock Fenders are essential for the safety and protection of your boat and are unmatched in their Impact Resistance and Durability! Consider making the switch to inflatable fenders today and experience the advantages of this modern marvel! Browse the Safe2Dock range of Inflatable Fenders Here.

Ensure your boat is fully protected at all times & in any weather condition. Take the necessary time to install your fenders correctly to prevent costly repairs and keep your boat safe for years to come.


Final Thoughts

To make sure your Protection is secure, please regularly check your fenders for the ultimate peace of mind!

  • Regularly clean valves & check inflation level.

  • Check attachment points to ensure secure protection

  • Consider fender covers for extra durability.


Now, enjoy your time on the water with total peace of mind, knowing your boat is fully protected at the dock! 🌊



Boat in marina, with safe2dock inflatable fenders

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