Polyform AS and Polyform US fenders: exporting quality and performance from Norway to the U.S.

Published Date: October 6th 2023

Polyform fenders with logo

Image copyright - © Polyform AS


One of latest additions to our sailing hardware line-up are the Polyform fenders from the original Norwegian manufacturer, Polyform AS. Established over  60 years ago, Polyform AS is renowned for inventing the modern plastic buoy and producing fenders of exceptional quality. In this article, we will look into the key features of Polyform fenders, share the story of Polyform Norway versus Polyform US, and provide a technical comparison of some of their popular A and F-series fenders.

Best of Polyform Fenders from Norway


Polyform AS’ unique, in-house developed, and patented POLYMATIQ® technology ensures supreme control over the fusion process, resulting in one of the most consistent quality available. Here are some key features of Polyform fenders:

Robust Construction: The easily recognizable rib-reinforced rope holds are solid and are created using high-pressure injection molding.
Extreme Durability: Polyform fenders are rigorously tested for strength and flexibility in extreme temperatures ranging from -30°C to +50°C. 
Polyform fenders feature high abrasive resistance and high energy absorption, making them suitable for ships of up to 1500 tons deadweight.
Low Maintenance: Polyform fenders require no special maintenance as long as they are not over-inflated, retaining their shape and functionality year after year.
Versatile Sizing: Polyform's F-series cylindrical fenders come in a wide range of sizes suitable for vessels ranging from small dinghies to commercial ships and Navy vessels.


The Story of Polyform Norway vs. Polyform US


The Polyform story originated in the picturesque coastal town of Ålesund, Norway, in 1955 when its founders invented the world's first plastic buoy. This invention became the cornerstone of the business. In the 1970s, Polyform US was established in the Pacific Northwest and continues to thrive as a family-owned business, designing and producing all products in Kent, Washington. We proudly offer both Polyform AS (Norway) and Polyform US products on our website, maintaining a brand-neutral approach.


Polyform Fenders - Technical Comparison

To help you make an informed choice, here is a technical comparison of the most popular F-series fenders from both Polyform US and Polyform Norway:


      Model Length (mm) Diameter (mm) Weight (kg)
            Polyform US Polyform Norway Polyform US Polyform Norway Polyform US Polyform Norway Polyform US Polyform Norway
            A1 A1 381 380 279 295 1,18 1,15
            A3 A3 584 575 432 460 3,08 3,10
            A5 A5 914 940 686 710 8,98 8,30
            F2 F2 635 610 208 220 1,81 1,75
            F4 F4 1029 1040 216 220 2,40 2,90
            F6 F6 1067 1090 279 290 4,63 4,20


Polyform fenders sizing


Not sure which size of fenders do you need for your boat? In fender sizing a simple rule of thumb applies - approximately 1 inch/25 mm of fender diameter for every 4 or 5 ft/1,2-1,5 m of the boat length (LOA) for cylindrical fenders. For round fenders approx. 2 inch/50 mm for every 5 ft/1,5 m of boat length.


Polyform US boat-fenders-sizes-f-series-4832x1888 (1)

Image copyright - © Polyform US

Polyform US recommends F2 fender for boats ranging from 20 to 30 feet. Polyform AS’ recommendation corresponds to boats of approximately 26 to 30 feet (6-8 m) in length. F4 fender is recommended for boats from 30 to 35 ft by Polyform US, while Polyform AS suggests it for slightly bigger boats of approximately 32 to 39 ft (10-12 m). As we go into bigger fender sizes Polyform US suggests F6 fender for boats of 35 to 50 feet. For Polyform AS range this fender is recommended for boats between approximately 50-52 ft (16m).


Polyform Norway fender size f series text-1Image copyright - © Polyform AS (Norway)

There are no consistent differences between the two brands. Each size may vary in length, width, thickness, and weight, with Polyform US offering a broader range, especially at the smaller sizes extending into HTM & NF series. These distinctions likely stem from subtle optimisations in their product lines.

If you are not sure how many polyform fenders do you need for your boat, please refer to our previous blog on this topic to help you make the right choice!

Summary on Polyform fenders


In conclusion, both Polyform Norway and Polyform US offer robust products made from quality materials that can withstand extended exposure to the elements. With over 60 years of setting standards for buoy design and quality, Polyform remains a top choice for sailors worldwide. We encourage you to explore the technical details provided above to select the perfect fender for your sailing needs, whether you opt for Polyform (AS) or Polyform US.


If you have any questions about Polyform fenders or need help choosing one of the products on our website, please feel free to email us at support@upffront.com to talk to one of our experts. Follow the link below to find all the Polyform fenders available in our shop:


See the range


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