Fender Applications and Suggested Polyform Fenders

Smaller Trailored Boats and Protected Moorings

Protected Moorings

Unprotected Moorings




Fender Sizing Guide and Fendering Tips

Fender Sizing Guide

Boat Size Fender Selection
Up to 3m G‑1, A‑0
3m ‑ 4.5m G‑2, NF‑3, A‑0
4.5m ‑ 6m G‑3, NF‑3, A‑1, S‑1
6m ‑ 7.5m F‑1, F‑02, F‑2, F‑3, G‑4, HTM‑1, NF‑4, A‑1, LD‑1
7.5m ‑ 9m F‑02, F‑2, F‑3, G‑5, HTM‑2, NF‑5, A‑1, LD‑1
9m ‑ 10.5m F‑4, F‑5, G‑5, HTM‑3, NF‑5, A‑2, LD‑2
10.5m ‑ 12m F‑5, F‑6, G‑6, HTM‑3, A‑2, LD‑2
12m ‑ 15m F‑6, HTM‑4, A‑3, LD‑3
15m ‑ 18m F‑7, F‑8, A‑4, LD‑4
18m ‑ 21m F‑8, F‑10, F‑11, A‑5
21m ‑ Up F‑11, F‑13, A‑5, A‑6, A‑7

*The Polyform US Boat Fender Guide is to be used as a general guide. Common sense, as well as an understanding of your boat and mooring conditions, must be considered. The final responsibility has to be taken by the consumer due to many variables out of Polyform's control.

Fender Tips

How to hang boat fenders

Use at least three fenders when docking.

  1. Tie fenders to something solid like a stanchion base or deck cleat along the rail.
  2. Always hang fenders close enough to the surface of the water.
  3. Do not tie the fenders high. This could allow them to swing in a wide arc, causing them to end up on top of the dock rather than between the boat's hull and the dock where they're needed.


Polyform fenders and buoys should be stored in a safe place out of direct sunlight.


How to arrange boat fenders for docking

Use at least three fenders when docking.

  1. One fender at aft.
  2. One fender at maximum beam.
  3. One fender at fore.


How to arrange boat fenders for rafting
  1. When rafting, the best fendering technique is to have the fenders in place on the boat already moored or at anchor.
  2. Position three standard fenders fairly close to maximum beam.
  3. Position two round A Series or LD Series buoys fore and aft to provide greater protection from boats tossing into each other.